Messages in this thread | | | Date | Wed, 15 Dec 2004 05:51:11 +0100 | From | Andi Kleen <> | Subject | Re: [PATCH 1/7] cpu-timers: high-resolution CPU clocks for POSIX clock_* syscalls |
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On Tue, Dec 14, 2004 at 02:44:17PM -0800, Ulrich Drepper wrote: > On 14 Dec 2004 20:07:39 +0100, Andi Kleen <ak@suse.de> wrote: > > > I don't think this should be merged until a clear need from a useful > > application is demonstrated for it. > > This is something which is requested countless times. Everybody doing > development of sophisticated programs adds some kind of self > monitoring. And there is of course profiling. The most widely used
You mean statistical profiling? I don't see why you need a bigger resolution than HZ for that.
> program which needs this is probably the JVM. Don't ask me for the > specific class, but the JVM developers asked for these clocks in this > form. Without the support available the Linux JVM is never going to
They didn't ask linux-kernel at least. Perhaps their requirements should be discussed here first before messing up all kinds of fast paths with dubious changes?
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