#include <signal.h>
#include <bench-xseg.h>
+#include <math.h>
+#include <string.h>
+
+#define PRINT_SIG(__who, __sig) \
+ fprintf(stdout, "%s (%lu): id %lu, object %lu, offset %lu\n", \
+ #__who, (uint64_t)(__sig), \
+ ((struct signature *)__sig)->id, \
+ ((struct signature *)__sig)->object, \
+ ((struct signature *)__sig)->offset);
+
struct timespec delay = {0, 4000000};
+__attribute__ ((unused))
+void inspect_obv(struct object_vars *obv)
+{
+ XSEGLOG2(&lc, D, "Struct object vars:\n"
+ "\tname: %s (%d),\n"
+ "\tprefix: %s (%d),\n"
+ "\tseed: %lu (%d),\n"
+ "\tobjnum: %lu (%d)",
+ obv->name, obv->namelen, obv->prefix, obv->prefixlen,
+ obv->seed, obv->seedlen,
+ obv->objnum, obv->objnumlen);
+}
+
+uint64_t __get_object(struct bench *prefs, uint64_t new)
+{
+ if (prefs->ts > 0)
+ new = new / (prefs->os / prefs->bs);
+ return new;
+}
+
+/******************************\
+ * Static miscellaneous tools *
+\******************************/
+static inline uint64_t __get_object_from_name(struct object_vars *obv,
+ char *name)
+{
+ /* In case of --objname switch */
+ if (obv->name[0])
+ return 0;
+
+ /* Keep only the object number */
+ return atol(name + obv->namelen - obv->objnumlen);
+}
+
+static inline int __snap_to_bound8(uint64_t space)
+{
+ return space > 8 ? 8 : space;
+}
+
+static inline double __timespec2double(struct timespec num)
+{
+ return (double) (num.tv_sec * pow(10, 9) + num.tv_nsec);
+}
+
+static inline void __write_sig(struct bench_lfsr *sg, uint64_t *d, uint64_t s,
+ int pos)
+{
+ uint64_t i;
+ uint64_t last_val;
+ uint64_t space_left;
+
+ /* Write random numbers (based on global_id) every 24 bytes */
+ /* TODO: Should we use memcpy? */
+ for (i = pos; i < (s / 8) - (3 - pos); i += 3)
+ *(d + i) = lfsr_next(sg);
+
+ /* special care for last chunk */
+ last_val = lfsr_next(sg);
+ space_left = s - (i * 8);
+ memcpy(d + i, &last_val, __snap_to_bound8(space_left));
+}
+
+static inline int __read_sig(struct bench_lfsr *sg, uint64_t *d, uint64_t s,
+ int pos)
+{
+ uint64_t i;
+ uint64_t last_val;
+ uint64_t space_left;
+
+ /* TODO: Should we use memcmp? */
+ for (i = pos; i < (s / 8) - (3 - pos); i += 3) {
+ if (*(d + i) != lfsr_next(sg))
+ return 1;
+ }
+ /* special care for last chunk */
+ last_val = lfsr_next(sg);
+ space_left = s - (i * 8);
+ if (memcmp(d + i, &last_val, __snap_to_bound8(space_left)))
+ return 1;
+
+ return 0;
+}
+
+/*
+ * Seperates a double number in seconds, msec, usec, nsec
+ * Expects a number in nanoseconds (e.g. a number from timespec2double)
+ */
+static struct tm_result __separate_by_order(double num)
+{
+ struct tm_result res;
+
+ //The format we expect is the following:
+ //
+ // |-s-|-ms-|-us-|-ns|
+ //num = 123 456 789 012 . 000000000000
+ res.s = num / pow(10,9);
+ num = fmod(num, pow(10,9));
+ res.ms = num / pow(10,6);
+ num = fmod(num, pow(10,6));
+ res.us = num / 1000;
+ res.ns = fmod(num, 1000);
+
+ return res;
+}
+
+static void __calculate_bw(struct bench *prefs, double iops, struct bw *bw)
+{
+ bw->val = iops * prefs->bs;
+ strcpy(bw->unit, "B/s");
+
+ if (bw->val < 1024)
+ return;
+
+ bw->val = bw->val / 1024;
+ strcpy(bw->unit, "KB/s");
+
+ if (bw->val < 1024)
+ return;
+
+ bw->val = bw->val / 1024;
+ strcpy(bw->unit, "MB/s");
+
+ if (bw->val < 1024)
+ return;
+
+ bw->val = bw->val / 1024;
+ strcpy(bw->unit, "GB/s");
+}
+
+static double __calculate_iops(struct bench *prefs, double elapsed_ns)
+{
+ /* elapsed_ns is in nanoseconds, so we convert it to seconds */
+ double elapsed = elapsed_ns / pow(10,9);
+ return (prefs->status->received / elapsed);
+}
+
+/******************************\
+ * Argument-parsing functions *
+\******************************/
+
/*
* Convert string to size in bytes.
* If syntax is invalid, return 0. Values such as zero and non-integer
return num;
}
+/*
+ * Converts struct timespec to double (units in nanoseconds)
+ */
int read_insanity(char *insanity)
{
- if (strcmp(insanity, "sane") == 0)
- return TM_SANE;
- if (strcmp(insanity, "eccentric") == 0)
- return TM_ECCENTRIC;
- if (strcmp(insanity, "manic") == 0)
- return TM_MANIC;
- if (strcmp(insanity, "paranoid") == 0)
- return TM_PARANOID;
+ if (strncmp(insanity, "sane", MAX_ARG_LEN + 1) == 0)
+ return INSANITY_SANE;
+ if (strncmp(insanity, "eccentric", MAX_ARG_LEN + 1) == 0)
+ return INSANITY_ECCENTRIC;
+ if (strncmp(insanity, "manic", MAX_ARG_LEN + 1) == 0)
+ return INSANITY_MANIC;
+ if (strncmp(insanity, "paranoid", MAX_ARG_LEN + 1) == 0)
+ return INSANITY_PARANOID;
return -1;
}
int read_op(char *op)
{
- if (strcmp(op, "read") == 0)
+ if (strncmp(op, "read", MAX_ARG_LEN + 1) == 0)
return X_READ;
- if (strcmp(op, "write") == 0)
+ if (strncmp(op, "write", MAX_ARG_LEN + 1) == 0)
return X_WRITE;
- if (strcmp(op, "info") == 0)
+ if (strncmp(op, "info", MAX_ARG_LEN + 1) == 0)
return X_INFO;
- if (strcmp(op, "delete") == 0)
+ if (strncmp(op, "delete", MAX_ARG_LEN + 1) == 0)
return X_DELETE;
return -1;
}
+int read_verify(char *verify)
+{
+ if (strncmp(verify, "no", MAX_ARG_LEN + 1) == 0)
+ return VERIFY_NO;
+ if (strncmp(verify, "meta", MAX_ARG_LEN + 1) == 0)
+ return VERIFY_META;
+ if (strncmp(verify, "full", MAX_ARG_LEN + 1) == 0)
+ return VERIFY_FULL;
+ return -1;
+}
+
+int read_progress(char *progress)
+{
+ if (strncmp(progress, "no", MAX_ARG_LEN + 1) == 0)
+ return PROGRESS_NO;
+ if (strncmp(progress, "yes", MAX_ARG_LEN + 1) == 0)
+ return PROGRESS_YES;
+ return -1;
+}
+
+int read_ping(char *ping)
+{
+ if (strncmp(ping, "no", MAX_ARG_LEN + 1) == 0)
+ return PING_MODE_OFF;
+ if (strncmp(ping, "yes", MAX_ARG_LEN + 1) == 0)
+ return PING_MODE_ON;
+ return -1;
+}
+
int read_pattern(char *pattern)
{
- if (strcmp(pattern, "seq") == 0)
- return IO_SEQ;
- if (strcmp(pattern, "rand") == 0)
- return IO_RAND;
+ if (strncmp(pattern, "seq", MAX_ARG_LEN + 1) == 0)
+ return PATTERN_SEQ;
+ if (strncmp(pattern, "rand", MAX_ARG_LEN + 1) == 0)
+ return PATTERN_RAND;
return -1;
}
-void print_res(struct tm_result res, char *type)
+int validate_seed(struct bench *prefs, unsigned long seed)
+{
+ if (seed < pow(10, prefs->objvars->seedlen))
+ return 0;
+ return -1;
+}
+
+/*******************\
+ * Print functions *
+\*******************/
+
+void print_io_stats(struct bench *prefs, double elapsed)
+{
+ struct bw bw;
+ double iops;
+
+ /*
+ * We could malloc struct bw in __calculate_bw, but it's safer in cases when
+ * there is no memory left.
+ */
+ iops = __calculate_iops(prefs, elapsed);
+ __calculate_bw(prefs, iops, &bw);
+
+ fprintf(stdout, " ~~~~~~~~~~~~~~~~~~~~~~~~\n");
+ if (prefs->op == X_READ || prefs->op == X_WRITE)
+ fprintf(stdout, "Bandwidth: %.3lf %s\n", bw.val, bw.unit);
+ fprintf(stdout, "IOPS: %.3lf\n", iops);
+}
+
+void print_stats(struct bench *prefs)
{
- printf("\n");
- printf(" %s\n", type);
- printf("================================\n");
- printf(" |-s-||-ms-|-us-|-ns-|\n");
- printf("Time: %03lu. %03lu %03lu %03lu\n",
+ fprintf(stdout, "\n"
+ "Requests total: %10lu\n"
+ "Requests submitted: %10lu\n"
+ "Requests received: %10lu\n"
+ "Requests failed: %10lu\n",
+ prefs->status->max,
+ prefs->status->submitted,
+ prefs->status->received,
+ prefs->status->failed);
+ if ((prefs->op == X_READ) && (GET_FLAG(VERIFY, prefs->flags) != VERIFY_NO))
+ fprintf(stdout, "Requests corrupted: %10lu\n", prefs->status->corrupted);
+ fprintf(stdout, "\n");
+ fflush(stdout);
+}
+
+void print_remaining(struct bench *prefs)
+{
+ uint64_t remaining;
+
+ remaining = prefs->status->max - prefs->status->received;
+ if (remaining)
+ fprintf(stdout, "Requests remaining: %10lu\n", remaining);
+ else
+ fprintf(stdout, "All requests have been served.\n");
+ fflush(stdout);
+}
+
+void print_res(struct bench *prefs)
+{
+ struct timer *tm;
+ struct tm_result res, res_rec;
+ double sum, sum_rec;
+
+ /* */
+ tm = prefs->total_tm;
+ sum = __timespec2double(tm->sum);
+ res = __separate_by_order(sum);
+
+ fprintf(stdout, "\n");
+ fprintf(stdout, " Benchmark results\n");
+ fprintf(stdout, " ========================\n");
+ fprintf(stdout, " |-s-||-ms-|-us-|-ns-|\n");
+ fprintf(stdout, "Total time: %3u. %03u %03u %03u\n",
res.s, res.ms, res.us, res.ns);
+
+ if (!prefs->status->received) {
+ fflush(stdout);
+ return;
+ }
+
+ tm = prefs->rec_tm;
+ if (GET_FLAG(INSANITY, prefs->flags) < tm->insanity)
+ goto flush;
+
+ sum_rec = __timespec2double(tm->sum);
+ res_rec = __separate_by_order(sum_rec / prefs->status->received);
+
+ fprintf(stdout, "Avg. latency: %3u. %03u %03u %03u\n",
+ res_rec.s, res_rec.ms, res_rec.us, res_rec.ns);
+
+flush:
+ print_io_stats(prefs, sum);
+ fflush(stdout);
}
-/*
- * Seperates a timespec struct in seconds, msec, usec, nsec
- */
-void separate_by_order(struct timespec src, struct tm_result *res)
+void print_progress(struct bench *prefs)
{
- res->ns = src.tv_nsec % 1000;
- src.tv_nsec /= 1000;
- res->us = src.tv_nsec % 1000;
- res->ms = src.tv_nsec / 1000;
- res->s = src.tv_sec;
+ int lines = 6;
+
+ if ((prefs->op == X_READ) && (GET_FLAG(VERIFY, prefs->flags) != VERIFY_NO))
+ lines++;
+
+ fprintf(stdout, "\033[%dA\033[J", lines);
+ print_stats(prefs);
}
-void create_target(struct bench *prefs, struct xseg_request *req,
- uint64_t new)
+/**************************\
+ * Benchmarking functions *
+\**************************/
+
+void create_target(struct bench *prefs, struct xseg_request *req)
{
struct xseg *xseg = prefs->peer->xseg;
+ struct object_vars *obv = prefs->objvars;
char *req_target;
req_target = xseg_get_target(xseg, req);
- //For read/write, the target object does not correspond to `new`, which is
- //actually the chunk number. We need to div this number with the number of
- //chunks in an object.
- //FIXME: Make it more elegant
- if (prefs->op == X_READ || prefs->op == X_WRITE)
- new = new / (prefs->os / prefs->bs);
- snprintf(req_target, TARGETLEN, "%s-%016lu", global_id, new);
+ /*
+ * For read/write, the target object may not correspond to `new`, which
+ * is actually the chunk number.
+ * Also, we use one extra byte while writting the target's name to store
+ * the null character and not overflow, but this will not be part of the
+ * target's name
+ */
+ if (obv->prefix[0]) {
+ snprintf(req_target, obv->namelen + 1, "%s-%0*lu-%0*lu",
+ obv->prefix, obv->seedlen, obv->seed,
+ obv->objnumlen, obv->objnum);
+ } else {
+ strncpy(req_target, obv->name, obv->namelen);
+ }
XSEGLOG2(&lc, D, "Target name of request is %s\n", req_target);
}
-void create_chunk(struct bench *prefs, struct xseg_request *req, uint64_t new)
-{/*
+uint64_t determine_next(struct bench *prefs)
+{
+ if (GET_FLAG(PATTERN, prefs->flags) == PATTERN_SEQ)
+ return prefs->status->submitted;
+ else
+ return lfsr_next(prefs->lfsr);
+}
+
+uint64_t calculate_offset(struct bench *prefs, uint64_t new)
+{
+ if (prefs->ts > 0)
+ return (new * prefs->bs) % prefs->os;
+ else
+ return 0;
+}
+
+uint64_t calculate_prog_quantum(struct bench *prefs)
+{
+ return round((double)prefs->status->max / 20.0);
+}
+
+
+/*
+ * ***********************************************
+ * `create_chunk` handles 3 identifiers:
+ * 1. The benchmark's global_id
+ * 2. The object's number
+ * 3. The chunk offset in the object
+ *
+ * ************************************************
+ * `readwrite_chunk_full` takes the above 3 identifiers and feeds them as seeds
+ * in 63-bit LFSRs. The numbers generated are written consecutively in chunk's
+ * memory range. For example, for a 72-byte chunk:
+ *
+ * || 1 | 2 | 3 | 1 | 2 | 3 | 1 | 2 | 3 ||
+ * ^ 8 16 24 32 40 48 56 64 ^
+ * | |
+ * | |
+ * start end
+ *
+ * 1,2,3 differ between each iteration
+ *
+ * **************************************************
+ * `_create_chunk_meta` simply writes the above 3 ids in the start and end of
+ * the chunk's memory range, so it should be much faster (but less safe)
+ *
+ * **************************************************
+ * In both cases, special care is taken not to exceed the chunk's memory range.
+ * Also, the bare minimum chunk to verify should be 48 bytes. This limit is set
+ * by readwrite_chunk_meta, which expects to write in a memory at least this
+ * big.
+ *
+ * **************************************************
+ * Note: The diagram above also represents the x86_64's endianness.
+ * Endianness must be taken into careful consideration when examining a memory
+ * chunk.
+ */
+static int readwrite_chunk_full(struct bench *prefs, struct xseg_request *req)
+{
+ struct bench_lfsr id_lfsr;
+ struct bench_lfsr obj_lfsr;
+ struct bench_lfsr off_lfsr;
struct xseg *xseg = prefs->peer->xseg;
- char *req_data;
+ uint64_t id = prefs->objvars->seed;
+ uint64_t object = prefs->objvars->objnum;
+ uint64_t *d = (uint64_t *)xseg_get_data(xseg, req);
+ uint64_t s = req->size;
- //TODO: Fill data depening on validation level
- req_data = xseg_get_data(xseg, req);
- */
+ /* Create 63-bit LFSRs */
+ lfsr_init(&id_lfsr, 0x7FFFFFFFFFFFFFFF, id, 0);
+ lfsr_init(&obj_lfsr, 0x7FFFFFFFFFFFFFFF, object, 0);
+ lfsr_init(&off_lfsr, 0x7FFFFFFFFFFFFFFF, req->offset, 0);
+
+ if (s < sizeof(struct signature)) {
+ XSEGLOG2(&lc, E, "Too small chunk size (%lu butes). Leaving.", s);
+ return 1;
+ }
+
+ /*
+ * Every write operation has its read counterpart which, if it finds any
+ * corruption, returns 1
+ */
+
+ if (req->op == X_WRITE) {
+ __write_sig(&id_lfsr, d, s, 0);
+ __write_sig(&obj_lfsr, d, s, 1);
+ __write_sig(&off_lfsr, d, s, 2);
+ } else {
+ if (__read_sig(&id_lfsr, d, s, 0))
+ return 1;
+ if (__read_sig(&obj_lfsr, d, s, 1))
+ return 1;
+ if(__read_sig(&off_lfsr, d, s, 2))
+ return 1;
+ }
+
+ return 0;
}
-uint64_t determine_next(struct bench *prefs)
+static int readwrite_chunk_meta(struct bench *prefs, struct xseg_request *req)
{
- if ((prefs->flags & (1 << PATTERN_FLAG)) == IO_SEQ)
- return prefs->sub_tm->completed;
- else {
- return lfsr_next(prefs->lfsr);
+ struct xseg *xseg = prefs->peer->xseg;
+ struct signature sig;
+ uint64_t id = prefs->objvars->seed;
+ uint64_t object = prefs->objvars->objnum;
+ char *d = xseg_get_data(xseg, req);
+ uint64_t s = req->size;
+ int sig_s = sizeof(struct signature);
+ int r = 0;
+
+ sig.id = id;
+ sig.object = object;
+ sig.offset = req->offset;
+
+ if (s < sig_s) {
+ XSEGLOG2(&lc, E, "Too small chunk size (%lu butes). "
+ "Leaving.", s);
+ return 1;
}
+
+ //PRINT_SIG(expected, (&sig));
+ /* Read/Write chunk signature both at its start and at its end */
+ if (req->op == X_WRITE) {
+ memcpy(d, &sig, sig_s);
+ memcpy(d + s - sig_s, &sig, sig_s);
+ } else {
+ if (memcmp(d, &sig, sig_s))
+ r = 1;
+ else if (memcmp(d + s - sig_s, &sig, sig_s))
+ r = 1;
+ }
+ //PRINT_SIG(start, d);
+ //PRINT_SIG(end, (d + s - sig_s));
+ return r;
}
-//FIXME: this looks like a hack, handle it more elegantly
-void create_id()
+/*
+ * We want these functions to be as fast as possible in case we haven't asked
+ * for verification
+ */
+void create_chunk(struct bench *prefs, struct xseg_request *req, uint64_t new)
{
- struct timespec seed;
+ int verify;
- clock_gettime(CLOCK_MONOTONIC_RAW, &seed);
+ verify = GET_FLAG(VERIFY, prefs->flags);
+ switch (verify) {
+ case VERIFY_NO:
+ break;
+ case VERIFY_META:
+ inspect_obv(prefs->objvars);
+ readwrite_chunk_meta(prefs, req);
+ break;
+ case VERIFY_FULL:
+ inspect_obv(prefs->objvars);
+ readwrite_chunk_full(prefs, req);
+ break;
+ default:
+ XSEGLOG2(&lc, W, "Unexpected verification mode: %d\n",
+ verify);
+ }
+}
- global_seed = seed.tv_nsec;
- //nanoseconds can't be more than 9 digits
- snprintf(global_id, IDLEN, "bench-%09lu", global_seed);
- XSEGLOG2(&lc, I, "Global ID is %s\n", global_id);
+int read_chunk(struct bench *prefs, struct xseg_request *req)
+{
+ struct xseg *xseg = prefs->peer->xseg;
+ struct object_vars *obv = prefs->objvars;
+ char *target;
+ int verify;
+ int r = 0;
+
+ verify = GET_FLAG(VERIFY, prefs->flags);
+ switch (verify) {
+ case VERIFY_NO:
+ break;
+ case VERIFY_META:
+ target = xseg_get_target(xseg, req);
+ obv->objnum = __get_object_from_name(obv, target);
+ inspect_obv(prefs->objvars);
+ r = readwrite_chunk_meta(prefs, req);
+ break;
+ case VERIFY_FULL:
+ target = xseg_get_target(xseg, req);
+ obv->objnum = __get_object_from_name(obv, target);
+ inspect_obv(prefs->objvars);
+ r = readwrite_chunk_full(prefs, req);
+ break;
+ default:
+ XSEGLOG2(&lc, W, "Unexpected verification mode: %d\n",
+ verify);
+ }
+ return r;
}
projects / archipelago / blobdiff