Messages in this thread | | | Date | Fri, 5 Mar 2004 15:59:47 +0100 | From | Andrea Arcangeli <> | Subject | Re: 2.4.23aa2 (bugfixes and important VM improvements for the high end) |
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On Fri, Mar 05, 2004 at 03:34:25PM +0100, Ingo Molnar wrote: > > * Andrea Arcangeli <andrea@suse.de> wrote: > > > > vsyscall-sys_gettimeofday and vsyscall-sys_time could help quite some > ^^^^^^^^^^^^^^^^^ > > > for mysql. Also, the highly threaded nature of mysql on the same MM > > > > he said he doesn't use gettimeofday frequently, so most of the flushes > > are from other syscalls. > > you are not reading Pete's and my emails too carefully, are you? Pete > said:
I thought time() wouldn't be called more than 1 per second anyways, why would anyone call time more than 1 per second?
> > > [...] MySQL does not use gettimeofday very frequently now, actually it > > uses time() most of the time, as some platforms used to have huge > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > performance problems with gettimeofday() in the past. > > > > The amount of gettimeofday() use will increase dramatically in the > > future so it is good to know about this matter. > > Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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