[rhn-users] pagecache

[Doctor Khumalo]

What are you using this machine for? If it's something that's intensely I/O 
related (check top and see if kswapd is being sucked up) then you should 
probably set it higher.

vm.pagecache=10 25 50

This will lower the pagecache max to conserve low memory. Just to let you 
know that RHEL3 has a major problem with the bounce-buffering phenomenon. I 
had this problem when running an scp process between two servers across the 
same Gigabit network link. The process was copying over 600 GB of data (ove 
ra hundred thousand files) and the whole process took FOUR DAYS! I tried to 
get Red Hat to fess up to the problem but they denied it. In the end, the 
next kernel up2date solved the problem.

If you want, I can attach the RHEL virtual memory manual. It's very helpful.



>From: "Trice Dennis D" <TriceDennisD at JohnDeere.com>
>Reply-To: Red Hat Network Users List <rhn-users at redhat.com>
>To: rhn-users at redhat.com
>Subject: [rhn-users] pagecache
>Date: Thu, 9 Jun 2005 10:46:58 -0500
>
>
>
> > Does anyone know how to correctly change the pagecache on Redhat 3.0?
> > I have tried "echo 1 15 30   /proc/sys/vm/pagecache".
> >
> > I also tried to putting the following entry in /etc/sysctl.conf
> > Vm.pagecache  1      15      30
> >
> > And is still uses up to 100 percent of memory for pagecache.
> >
> > Please help.
>_______________________________________________
>rhn-users mailing list
>rhn-users at redhat.com
>https://www.redhat.com/mailman/listinfo/rhn-users

_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE! 
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/