* [Bug runtime/14175] New: ensure aggregates are no slower than locked integer ops
@ 2012-05-28 20:10 fche at redhat dot com
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From: fche at redhat dot com @ 2012-05-28 20:10 UTC (permalink / raw)
To: systemtap
http://sourceware.org/bugzilla/show_bug.cgi?id=14175
Bug #: 14175
Summary: ensure aggregates are no slower than locked integer
ops
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: runtime
AssignedTo: systemtap@sourceware.org
ReportedBy: fche@redhat.com
Classification: Unclassified
There has been a microbenchmark report that our aggregates' <<< 1 type
operations take longer than similar integer ++, even including locking
overheads, with the speculation that this is because the runtime always tracks
sums/max/min/count even if only one is needed by the script.
It would be helpful to reproduce the report [1], and if it is confirmed
non-trivial, to fix the runtime not to do unnecessary work.
[1]
https://github.com/fche/ServerUsage/commit/ff889cdcbaef65e2ce26a30ad4d18a614d6f41a2
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2012-05-28 20:10 [Bug runtime/14175] New: ensure aggregates are no slower than locked integer ops fche at redhat dot com
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