root / xseg / peers / user / bench-xseg.c @ e099873d
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/*
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* Copyright 2012 GRNET S.A. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and
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* documentation are those of the authors and should not be
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* interpreted as representing official policies, either expressed
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* or implied, of GRNET S.A.
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*/
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#define _GNU_SOURCE
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include <sys/syscall.h> |
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#include <sys/types.h> |
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#include <pthread.h> |
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#include <xseg/xseg.h> |
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#include <peer.h> |
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#include <time.h> |
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#include <sys/util.h> |
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#include <signal.h> |
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#include <bench-xseg.h> |
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#include <limits.h> |
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char global_id[IDLEN];
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uint64_t global_seed; |
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/*
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* This function checks two things:
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* a) If in-flight requests are less than given iodepth
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* b) If we have submitted all of the requests
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*/
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#define CAN_SEND_REQUEST(prefs) \
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prefs->sub_tm->completed - prefs->rec_tm->completed < prefs->iodepth && \ |
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prefs->sub_tm->completed < prefs->max_requests \ |
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void custom_peer_usage()
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{ |
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fprintf(stderr, "Custom peer options: \n"
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" --------------------------------------------\n"
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" -op | None | XSEG operation [read|write|info|delete]\n"
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" --pattern | None | I/O pattern [seq|rand]\n"
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" -to | None | Total objects (not for read/write)\n"
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" -ts | None | Total I/O size\n"
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" -os | 4M | Object size\n"
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" -bs | 4k | Block size\n"
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" -tp | None | Target port\n"
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" --iodepth | 1 | Number of in-flight I/O requests\n"
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" --verify | no | Verify written requests [no|meta|hash]\n"
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" --seed | None | Inititalize LFSR and target names\n"
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" --insanity| sane | Adjust insanity level of benchmark:\n"
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" | | [sane|eccentric|manic|paranoid]\n"
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"\n");
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} |
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int custom_peer_init(struct peerd *peer, int argc, char *argv[]) |
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{ |
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struct bench *prefs;
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char total_objects[MAX_ARG_LEN + 1]; |
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char total_size[MAX_ARG_LEN + 1]; |
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char object_size[MAX_ARG_LEN + 1]; |
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char block_size[MAX_ARG_LEN + 1]; |
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char op[MAX_ARG_LEN + 1]; |
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char pattern[MAX_ARG_LEN + 1]; |
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char insanity[MAX_ARG_LEN + 1]; |
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struct xseg *xseg = peer->xseg;
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unsigned int xseg_page_size = 1 << xseg->config.page_shift; |
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long iodepth = -1; |
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long dst_port = -1; |
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unsigned long seed = -1; |
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int r;
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|
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op[0] = 0; |
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pattern[0] = 0; |
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total_objects[0] = 0; |
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total_size[0] = 0; |
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block_size[0] = 0; |
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object_size[0] = 0; |
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insanity[0] = 0; |
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|
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#ifdef MT
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for (i = 0; i < nr_threads; i++) { |
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prefs = peer->thread[i]->priv; |
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prefs = malloc(sizeof(struct bench)); |
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if (!prefs) {
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perror("malloc");
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return -1; |
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} |
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} |
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#endif
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prefs = malloc(sizeof(struct bench)); |
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if (!prefs) {
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perror("malloc");
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return -1; |
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} |
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prefs->flags = 0;
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//Begin reading the benchmark-specific arguments
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BEGIN_READ_ARGS(argc, argv); |
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READ_ARG_STRING("-op", op, MAX_ARG_LEN);
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READ_ARG_STRING("--pattern", pattern, MAX_ARG_LEN);
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READ_ARG_STRING("-to", total_objects, MAX_ARG_LEN);
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READ_ARG_STRING("-ts", total_size, MAX_ARG_LEN);
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READ_ARG_STRING("-os", object_size, MAX_ARG_LEN);
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READ_ARG_STRING("-bs", block_size, MAX_ARG_LEN);
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READ_ARG_ULONG("--iodepth", iodepth);
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READ_ARG_ULONG("-tp", dst_port);
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READ_ARG_ULONG("--seed", seed);
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READ_ARG_STRING("--insanity", insanity, MAX_ARG_LEN);
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END_READ_ARGS(); |
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/*****************************\
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* Check I/O type parameters *
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\*****************************/
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//We support 4 xseg operations: X_READ, X_WRITE, X_DELETE, X_INFO
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//The I/O pattern of thesee operations can be either synchronous (sync) or
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//random (rand)
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if (!op[0]) { |
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XSEGLOG2(&lc, E, "xseg operation needs to be supplied\n");
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goto arg_fail;
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} |
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r = read_op(op); |
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if (r < 0) { |
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XSEGLOG2(&lc, E, "Invalid syntax: -op %s\n", op);
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goto arg_fail;
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} |
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prefs->op = r; |
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if (!pattern[0]) { |
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XSEGLOG2(&lc, E, "I/O pattern needs to be supplied\n");
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goto arg_fail;
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} |
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r = read_pattern(pattern); |
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if (r < 0) { |
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XSEGLOG2(&lc, E, "Invalid syntax: --pattern %s\n", pattern);
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goto arg_fail;
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} |
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prefs->flags |= (uint8_t)r; |
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//Defailt iodepth value is 1
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if (iodepth < 0) |
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prefs->iodepth = 1;
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else
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prefs->iodepth = iodepth; |
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/**************************\
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* Check timer parameters *
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\**************************/
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//Most of the times, not all timers need to be used.
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//We can choose which timers will be used by adjusting the "insanity"
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//level of the benchmark i.e. the obscurity of code paths (get request,
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//submit request) that will be timed.
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if (!insanity[0]) |
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strcpy(insanity, "sane");
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prefs->insanity = read_insanity(insanity); |
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if (prefs->insanity < 0) { |
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XSEGLOG2(&lc, E, "Invalid syntax: --insanity %s\n", insanity);
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goto arg_fail;
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} |
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/*
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* If we have a request other than read/write, we don't need to check
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* about size parameters, but only how many objects we want to affect
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*/
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if (prefs->op != X_READ && prefs->op != X_WRITE) {
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/***************************\
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* Check object parameters *
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\***************************/
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if (!total_objects[0]) { |
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XSEGLOG2(&lc, E, |
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"Total number of objects needs to be supplied\n");
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goto arg_fail;
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} |
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prefs->to = str2num(total_objects); |
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if (!prefs->to) {
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XSEGLOG2(&lc, E, "Invalid syntax: -to %s\n", total_objects);
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goto arg_fail;
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} |
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//In this case, the maximum number of requests is the total number of
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//objects we will handle
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prefs->max_requests = prefs->to; |
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} else {
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/*************************\
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* Check size parameters *
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\*************************/
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//Block size (bs): Defaults to 4K.
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//It must be a number followed by one of these characters:
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// [k|K|m|M|g|G]
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//If not, it will be considered as size in bytes.
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//Must be integer multiple of segment's page size (typically 4k).
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if (!block_size[0]) |
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strcpy(block_size,"4k");
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prefs->bs = str2num(block_size); |
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if (!prefs->bs) {
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XSEGLOG2(&lc, E, "Invalid syntax: -bs %s\n", block_size);
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goto arg_fail;
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} else if (prefs->bs % xseg_page_size) { |
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XSEGLOG2(&lc, E, "Misaligned block size: %s\n", block_size);
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goto arg_fail;
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} |
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//Total I/O size (ts): Must be supplied by user.
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//Must have the same format as "total size"
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//Must be integer multiple of "block size"
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if (!total_size[0]) { |
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XSEGLOG2(&lc, E, "Total I/O size needs to be supplied\n");
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goto arg_fail;
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} |
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prefs->ts = str2num(total_size); |
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if (!prefs->ts) {
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XSEGLOG2(&lc, E, "Invalid syntax: -ts %s\n", total_size);
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goto arg_fail;
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} else if (prefs->ts % prefs->bs) { |
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XSEGLOG2(&lc, E, "Misaligned total I/O size: %s\n", total_size);
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goto arg_fail;
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} else if (prefs->ts > xseg->segment_size) { |
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XSEGLOG2(&lc, E, |
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"Total I/O size exceeds segment size\n", total_size);
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goto arg_fail;
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} |
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//Object size (os): Defaults to 4M.
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//Must have the same format as "total size"
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//Must be integer multiple of "block size"
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if (!object_size[0]) |
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strcpy(object_size,"4M");
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prefs->os = str2num(object_size); |
264 |
if (!prefs->os) {
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XSEGLOG2(&lc, E, "Invalid syntax: -os %s\n", object_size);
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goto arg_fail;
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} else if (prefs->os % prefs->bs) { |
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XSEGLOG2(&lc, E, "Misaligned object size: %s\n", object_size);
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goto arg_fail;
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} |
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|
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//In this case, the maximum number of requests is the number of blocks
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//we need to cover the total I/O size
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prefs->max_requests = prefs->ts / prefs->bs; |
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} |
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/*************************\
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* Check port parameters *
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\*************************/
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if (dst_port < 0){ |
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XSEGLOG2(&lc, E, "Target port needs to be supplied\n");
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goto arg_fail;
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} |
285 |
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prefs->src_port = peer->portno_start; //TODO: allow user to change this
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prefs->dst_port = (xport) dst_port; |
288 |
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/*********************************\
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* Create timers for all metrics *
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\*********************************/
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if (init_timer(&prefs->total_tm, TM_SANE))
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goto tm_fail;
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if (init_timer(&prefs->sub_tm, TM_MANIC))
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goto tm_fail;
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if (init_timer(&prefs->get_tm, TM_PARANOID))
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goto tm_fail;
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if (init_timer(&prefs->rec_tm, TM_ECCENTRIC))
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goto tm_fail;
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/********************************\
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* Customize struct peerd/prefs *
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\********************************/
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305 |
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prefs->peer = peer; |
307 |
|
308 |
//The following function initializes the global_id, global_seed extern
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//variables.
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310 |
create_id(seed); |
311 |
|
312 |
if ((prefs->flags & (1 <<PATTERN_FLAG)) == IO_RAND) { |
313 |
prefs->lfsr = malloc(sizeof(struct lfsr)); |
314 |
if (!prefs->lfsr) {
|
315 |
perror("malloc");
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316 |
goto lfsr_fail;
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317 |
} |
318 |
//FIXME: handle better the seed passing than just giving UINT64_MAX
|
319 |
if (lfsr_init(prefs->lfsr, prefs->max_requests, seed)) {
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320 |
XSEGLOG2(&lc, E, "LFSR could not be initialized\n");
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321 |
goto lfsr_fail;
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322 |
} |
323 |
} |
324 |
|
325 |
peer->peerd_loop = custom_peerd_loop; |
326 |
peer->priv = (void *) prefs;
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327 |
return 0; |
328 |
|
329 |
arg_fail:
|
330 |
custom_peer_usage(); |
331 |
lfsr_fail:
|
332 |
free(prefs->lfsr); |
333 |
tm_fail:
|
334 |
free(prefs->total_tm); |
335 |
free(prefs->sub_tm); |
336 |
free(prefs->get_tm); |
337 |
free(prefs->rec_tm); |
338 |
free(prefs); |
339 |
return -1; |
340 |
} |
341 |
|
342 |
|
343 |
static int send_request(struct peerd *peer, struct bench *prefs) |
344 |
{ |
345 |
struct xseg_request *req;
|
346 |
struct xseg *xseg = peer->xseg;
|
347 |
struct peer_req *pr;
|
348 |
xport srcport = prefs->src_port; |
349 |
xport dstport = prefs->dst_port; |
350 |
xport p; |
351 |
|
352 |
int r;
|
353 |
uint64_t new; |
354 |
uint64_t size = prefs->bs; |
355 |
|
356 |
//srcport and dstport must already be provided by the user.
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357 |
//returns struct xseg_request with basic initializations
|
358 |
//XSEGLOG2(&lc, D, "Get new request\n");
|
359 |
timer_start(prefs, prefs->get_tm); |
360 |
req = xseg_get_request(xseg, srcport, dstport, X_ALLOC); |
361 |
if (!req) {
|
362 |
XSEGLOG2(&lc, W, "Cannot get request\n");
|
363 |
return -1; |
364 |
} |
365 |
timer_stop(prefs, prefs->get_tm, NULL);
|
366 |
|
367 |
//Allocate enough space for the data and the target's name
|
368 |
//XSEGLOG2(&lc, D, "Prepare new request\n");
|
369 |
r = xseg_prep_request(xseg, req, TARGETLEN, size); |
370 |
if (r < 0) { |
371 |
XSEGLOG2(&lc, W, "Cannot prepare request! (%lu, %llu)\n",
|
372 |
TARGETLEN, (unsigned long long)size); |
373 |
goto put_xseg_request;
|
374 |
} |
375 |
|
376 |
//Determine what the next target/chunk will be, based on I/O pattern
|
377 |
new = determine_next(prefs); |
378 |
XSEGLOG2(&lc, I, "Our new request is %lu\n", new);
|
379 |
//Create a target of this format: "bench-<obj_no>"
|
380 |
create_target(prefs, req, new); |
381 |
|
382 |
if (prefs->op == X_WRITE || prefs->op == X_READ) {
|
383 |
req->size = size; |
384 |
//Calculate the chunk offset inside the object
|
385 |
req->offset = (new * prefs->bs) % prefs->os; |
386 |
XSEGLOG2(&lc, D, "Offset of request %lu is %lu\n", new, req->offset);
|
387 |
|
388 |
if (prefs->op == X_WRITE)
|
389 |
create_chunk(prefs, req, new); |
390 |
} |
391 |
|
392 |
req->op = prefs->op; |
393 |
|
394 |
//Measure this?
|
395 |
//XSEGLOG2(&lc, D, "Allocate peer request\n");
|
396 |
pr = alloc_peer_req(peer); |
397 |
if (!pr) {
|
398 |
XSEGLOG2(&lc, W, "Cannot allocate peer request (%ld remaining)\n",
|
399 |
peer->nr_ops - xq_count(&peer->free_reqs)); |
400 |
goto put_xseg_request;
|
401 |
} |
402 |
pr->peer = peer; |
403 |
pr->portno = srcport; |
404 |
pr->req = req; |
405 |
pr->priv = malloc(sizeof(struct timespec)); |
406 |
if (!pr->priv) {
|
407 |
perror("malloc");
|
408 |
goto put_peer_request;
|
409 |
} |
410 |
|
411 |
//XSEGLOG2(&lc, D, "Set request data\n");
|
412 |
r = xseg_set_req_data(xseg, req, pr); |
413 |
if (r < 0) { |
414 |
XSEGLOG2(&lc, W, "Cannot set request data\n");
|
415 |
goto put_peer_request;
|
416 |
} |
417 |
|
418 |
/*
|
419 |
* Start measuring receive time.
|
420 |
* When we receive a request, we need to have its submission time to
|
421 |
* measure elapsed time. Thus, we memcpy its submission time to pr->priv.
|
422 |
* QUESTION: Is this the fastest way?
|
423 |
*/
|
424 |
timer_start(prefs, prefs->rec_tm); |
425 |
if (prefs->rec_tm->insanity <= prefs->insanity)
|
426 |
memcpy(pr->priv, &prefs->rec_tm->start_time, sizeof(struct timespec)); |
427 |
|
428 |
//Submit the request from the source port to the target port
|
429 |
//XSEGLOG2(&lc, D, "Submit request %lu\n", new);
|
430 |
timer_start(prefs, prefs->sub_tm); |
431 |
p = xseg_submit(xseg, req, srcport, X_ALLOC); |
432 |
if (p == NoPort) {
|
433 |
XSEGLOG2(&lc, W, "Cannot submit request\n");
|
434 |
goto put_peer_request;
|
435 |
} |
436 |
timer_stop(prefs, prefs->sub_tm, NULL);
|
437 |
|
438 |
//Send SIGIO to the process that has bound this port to inform that
|
439 |
//IO is possible
|
440 |
r = xseg_signal(xseg, p); |
441 |
//if (r < 0)
|
442 |
// XSEGLOG2(&lc, W, "Cannot signal destination peer (reason %d)\n", r);
|
443 |
|
444 |
return 0; |
445 |
|
446 |
put_peer_request:
|
447 |
free(pr->priv); |
448 |
free_peer_req(peer, pr); |
449 |
put_xseg_request:
|
450 |
if (xseg_put_request(xseg, req, srcport))
|
451 |
XSEGLOG2(&lc, W, "Cannot put request\n");
|
452 |
return -1; |
453 |
} |
454 |
|
455 |
/*
|
456 |
* This function substitutes the default generic_peerd_loop of peer.c.
|
457 |
* It's plugged to struct peerd at custom peer's initialisation
|
458 |
*/
|
459 |
int custom_peerd_loop(void *arg) |
460 |
{ |
461 |
#ifdef MT
|
462 |
struct thread *t = (struct thread *) arg; |
463 |
struct peerd *peer = t->peer;
|
464 |
char *id = t->arg;
|
465 |
#else
|
466 |
struct peerd *peer = (struct peerd *) arg; |
467 |
char id[4] = {'P','e','e','r'}; |
468 |
#endif
|
469 |
struct xseg *xseg = peer->xseg;
|
470 |
struct bench *prefs = peer->priv;
|
471 |
xport portno_start = peer->portno_start; |
472 |
xport portno_end = peer->portno_end; |
473 |
uint64_t threshold=1000/(1 + portno_end - portno_start); |
474 |
pid_t pid = syscall(SYS_gettid); |
475 |
int r;
|
476 |
uint64_t loops; |
477 |
|
478 |
XSEGLOG2(&lc, I, "%s has tid %u.\n",id, pid);
|
479 |
xseg_init_local_signal(xseg, peer->portno_start); |
480 |
|
481 |
timer_start(prefs, prefs->total_tm); |
482 |
send_request:
|
483 |
while (!isTerminate()) {
|
484 |
#ifdef MT
|
485 |
if (t->func) {
|
486 |
XSEGLOG2(&lc, D, "%s executes function\n", id);
|
487 |
xseg_cancel_wait(xseg, peer->portno_start); |
488 |
t->func(t->arg); |
489 |
t->func = NULL;
|
490 |
t->arg = NULL;
|
491 |
continue;
|
492 |
} |
493 |
#endif
|
494 |
while (CAN_SEND_REQUEST(prefs)) {
|
495 |
xseg_cancel_wait(xseg, peer->portno_start); |
496 |
XSEGLOG2(&lc, D, "...because %lu < %lu && %lu < %lu\n",
|
497 |
prefs->sub_tm->completed - prefs->rec_tm->completed, |
498 |
prefs->iodepth, prefs->sub_tm->completed, |
499 |
prefs->max_requests); |
500 |
XSEGLOG2(&lc, D, "Start sending new request\n");
|
501 |
r = send_request(peer, prefs); |
502 |
if (r < 0) |
503 |
break;
|
504 |
} |
505 |
//Heart of peerd_loop. This loop is common for everyone.
|
506 |
for (loops = threshold; loops > 0; loops--) { |
507 |
if (loops == 1) |
508 |
xseg_prepare_wait(xseg, peer->portno_start); |
509 |
|
510 |
if (check_ports(peer)) {
|
511 |
//If an old request has just been acked, the most sensible
|
512 |
//thing to do is to immediately send a new one
|
513 |
if (prefs->rec_tm->completed < prefs->max_requests)
|
514 |
goto send_request;
|
515 |
else
|
516 |
return 0; |
517 |
} |
518 |
} |
519 |
//struct xseg_port *port = xseg_get_port(xseg, portno_start);
|
520 |
//struct xq *q;
|
521 |
//q = XPTR_TAKE(port->request_queue, xseg->segment);
|
522 |
//XSEGLOG2(&lc, I, "%s goes to sleep with %u requests pending\n",
|
523 |
// id, xq_count(q));
|
524 |
XSEGLOG2(&lc, I, "%s goes to sleep\n", id);
|
525 |
#ifdef ST_THREADS
|
526 |
if (ta){
|
527 |
st_sleep(0);
|
528 |
continue;
|
529 |
} |
530 |
#endif
|
531 |
xseg_wait_signal(xseg, 10000000UL);
|
532 |
xseg_cancel_wait(xseg, peer->portno_start); |
533 |
XSEGLOG2(&lc, I, "%s woke up\n", id);
|
534 |
} |
535 |
|
536 |
XSEGLOG2(&lc, I, "peer->free_reqs = %d, peer->nr_ops = %d\n",
|
537 |
xq_count(&peer->free_reqs), peer->nr_ops); |
538 |
return 0; |
539 |
} |
540 |
|
541 |
void custom_peer_finalize(struct peerd *peer) |
542 |
{ |
543 |
struct bench *prefs = peer->priv;
|
544 |
//TODO: Measure mean time, standard variation
|
545 |
|
546 |
if (!prefs->total_tm->completed)
|
547 |
timer_stop(prefs, prefs->total_tm, NULL);
|
548 |
|
549 |
print_stats(prefs); |
550 |
print_res(prefs, prefs->total_tm, "Total Requests");
|
551 |
return;
|
552 |
} |
553 |
|
554 |
|
555 |
static void handle_received(struct peerd *peer, struct peer_req *pr) |
556 |
{ |
557 |
//FIXME: handle null pointer
|
558 |
struct bench *prefs = peer->priv;
|
559 |
struct timer *rec = prefs->rec_tm;
|
560 |
|
561 |
if (!pr->req) {
|
562 |
//This is a serious error, so we must stop
|
563 |
XSEGLOG2(&lc, E, "Received peer request with no xseg request");
|
564 |
terminated++; |
565 |
return;
|
566 |
} |
567 |
|
568 |
if (!pr->priv) {
|
569 |
XSEGLOG2(&lc, W, "Cannot find submission time of request");
|
570 |
return;
|
571 |
} |
572 |
|
573 |
timer_stop(prefs, rec, pr->priv); |
574 |
|
575 |
if (xseg_put_request(peer->xseg, pr->req, pr->portno))
|
576 |
XSEGLOG2(&lc, W, "Cannot put xseg request\n");
|
577 |
|
578 |
//QUESTION, can't we just keep the malloced memory for future use?
|
579 |
free(pr->priv); |
580 |
free_peer_req(peer, pr); |
581 |
} |
582 |
|
583 |
int dispatch(struct peerd *peer, struct peer_req *pr, struct xseg_request *req, |
584 |
enum dispatch_reason reason)
|
585 |
{ |
586 |
switch (reason) {
|
587 |
case dispatch_accept:
|
588 |
//This is wrong, benchmarking peer should not accept requests,
|
589 |
//only receive them.
|
590 |
XSEGLOG2(&lc, W, "Bench peer should not accept requests\n");
|
591 |
complete(peer, pr); |
592 |
break;
|
593 |
case dispatch_receive:
|
594 |
handle_received(peer, pr); |
595 |
break;
|
596 |
default:
|
597 |
fail(peer, pr); |
598 |
} |
599 |
return 0; |
600 |
} |