Change the tryAlloc/tryReloc workflow
Currently, the tryAlloc and tryReloc function return a list with all theresults, both failures and successes. This is fine for hail, which doesone round of allocations, but is not so good for hspace, which doesiterative rounds; since at each (successful) step we only take the best...
Simplify the Cluster.tryAlloc structures
Currently the tryAlloc function calls theallocateOnSingle/allocateOnPair and the builds a new tuple with thosefunctions's result plus the new node list. This is however suboptimalin two respects: - the new nodes added are the 'old' versions of the respective nodes,...
Slight change to the internal allocation results
Currently the Cluster.AllocSolution type is defined as a list of‘(OpResult Node.list, …)’ and the results for applyMove are defined as‘(OpResult Node.List, …)’. Both these means that the failure/successindication is hidden in the first elements of this tuple, which makes is...
hspace: switch output to shell-script format
This (big) patch changes the output of hspace from text-format(separated by ‘: ’) to a shell-snippet, in ‘key=value’ format.
This will allow sourcing the output or parsing it via awk/sed/etc.
hspace: move instance count and score into CStats
Currently the instance count and cluster score are separated from theother initial/final phase stats, even though they are very similar. Thispatch moves computation of these two into totalResources/CStats and...
Fix unittests
The recent OpResult and CPU values additions broke unittests.
Export more stats in hspace
This patch changes Cluster.totalResources to compute more resources andprints them in hspace.
Show errors on stderr instead of stdout
Currently many of the exit and warning conditions mistakenly display errormessages on stdout, which makes parsing the output of programs harder. Thispatch attempts to fix such occurrences.
Fix score calculation to work with empty clusters
Currently the cluster score calculation includes an offline instancepercentage, expressed as “offline inst / (offline + online inst)”, whichresults in NaN for empty clusters. This patch changes the calculation...
Optimize the Utils.stdDev function
This patch optimizes the stdDev function in two respects: - first, we don't do sum . map which builds an intermediate list, but instead use a fold over the list to build incrementally the sum; this should reduce both the time and space characteristics, as we...
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