Date: Fri, 17 Sep 1999 08:22:54 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Don Lewis <Don.Lewis@tsc.tdk.com> Cc: Brad Knowles <blk@skynet.be>, freebsd-current@FreeBSD.ORG Subject: Re: More benchmarking stuff... Message-ID: <199909171522.IAA53266@apollo.backplane.com> References: <199909171402.HAA23902@salsa.gv.tsc.tdk.com>
next in thread | previous in thread | raw e-mail | index | archive | help
:Also FreeBSD only caches a limited number of directory blocks. This
:was discussed on -hackers in April. Search for the subject "Directories
:not VMIO cached at all!". Matt Dillon posted a patch to to better
:cache directories (at the possible expense of wasted RAM and which breaks
:NFS) in Message-ID <199904171844.LAA75452@apollo.backplane.com>.
That's been committed, but you have to turn it on with a sysctl
because softupdates occassionally barfs with it on. It seems unlikely
to me that it will effect the benchmark unless the benchmark creates
a whole lot of directories.
sysctl -w vfs.vmiodirenable=1
The NFSv3 performance elements have also been committed. I'm going
to try running this benchmark thingy on my test boxes as soon as I
can get my cvs tree updated.
-Matt
Matthew Dillon
<dillon@backplane.com>
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199909171522.IAA53266>