Re: 2.4.23aa2 (bugfixes and important VM improvements for the high end)

From: Ingo Molnar
Date: Fri Mar 05 2004 - 09:36:49 EST



* Andrea Arcangeli <andrea@xxxxxxx> 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:

> [...] 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
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