Messages in this thread |  | | | Date | Mon, 3 Dec 2007 11:05:54 +0100 | | From | Ingo Molnar <> | | Subject | Re: sched_yield: delete sysctl_sched_compat_yield | |
* Zhang, Yanmin <yanmin_zhang@linux.intel.com> wrote:
> Although no source codes of volanoMark, I suspect it calls
> Thread.sched. volanoMark is a kind of chatroom benchmark. When a
> client sends out a message, server will send the message to all
> clients. I suspect the client calls Thread.yield after sending out a
> couple of messages.
yeah, so far only volanomark seems to be affected by this, and if it
indeed calls Thread.yield artificially it's a pretty stupid benchmark
and it's not the fault of the JDK. If we had the source to volanomark we
could fix this easily.
> 2 JVM all have regression if sched_compat_yield=0.
>
> I ran some testing, such like iozone/specjbb/tbench/dbench/sysbench,
> and didn't see regression.
which JVM was utilized by the specjbb (Java Business Benchmark) tests?
Ingo
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