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KS2010: Performance regressions

KS2010: Performance regressions

Posted Nov 2, 2010 15:15 UTC (Tue) by Cyberax (✭ supporter ✭, #52523)
In reply to: KS2010: Performance regressions by jbh
Parent article: KS2010: Performance regressions

"I had a brief look at the kernel tracker, and it does look more useful than I remembered. The standard tests there (dbench and so on), and although it looks like a lot of the tests are a bit pointless (basic single-thread cpu-heavy workload), they can probably be disabled."

Single-threaded benchmarks are not pointless. I had regressions in single-thread workloads caused by 'too clever' locking which had higher overhead than good old lock_kernel.

Anyway, it's certainly possible to disable uninteresting benchmarks in Phoromatic.

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KS2010: Performance regressions

Posted Nov 2, 2010 21:29 UTC (Tue) by jbh (subscriber, #494) [Link]

If you got burned by locking changes, I suspect it wasn't a cpu-bound workload to begin with. But if you find them useful, good for you!

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