On Wed, 29 Mar 2000, Daniel J Blueman wrote:
> Hi Richard,
>
> > I found that the large flushes, taking a long time, made my workstation
> > a bit temperamental so I run a little daemon that does what bdflush used
> > to do:
> >
> > for(;;)
> > {
> > sync();
> > sleep(30);
> > }
>
> Calling sync() is a Bad Thing as far as performance goes. It holds the
> global kernel lock for quite a long time. On a production server, that
> _would_ cause things to grind to a halt for the duration of the flush. On a
> workstation, it'll not do too much harm. The kernel thread kflushd does (or
> should do) what bdflush does anyway.
Yes. But what it does it gets done in a a few hundred milliseconds instead
of a 30 second flush.
Cheers,
Dick Johnson
Penguin : Linux version 2.3.41 on an i686 machine (800.63 BogoMips).
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