Re: [squid-users] Benchmarks: ext3 vs. ReiserFS (fwd)

Hi Joe,

Found this test by Scott

http://www.net.oregonstate.edu/~kveton/fs/

Reiserfs (noatime, notail) seems to be superior... Any comments?

Rgds,
Wei Keong

On Mon, 21 Oct 2002, Joe Cooper wrote:

> Hi Wei Keong,
>
> Comments inline:
>
> Wei Keong wrote:
> > Hi Joe,
> >
> > My squid is currently running ext2, which is very stable for 100-120 req/s.
> > To achieve better performance, am thinking of changing to ext3. But, from the
> > forum, there seems to be some performance issue on ext3. Am thinking of
> > testing both fs on kernel 2.4.19. Hope you can share what you have done...
> >
> > - When was the last time you tested the performance of ext3 & reiserfs?
>
> About 8 months ago. The kernel revision was the then current Red Hat
> 2.4.9-31 (I think 31 is right--it was some kernel package from Red Hat).
> I'm planning another round of tests, because both ReiserFS and ext3
> have had significant enhancements that might lead to performance
> improvements for Squid. I'm waiting until those enhancements become
> mainlined, however. (Specifically, indexes in ext3, and write barriers
> in ReiserFS, among other general improvements.)
>
> > - How did you test the performance?
>
> Polygraph, of course.
>
> > - What kind of workload you use?
>
> Polymix-4 and Datacomm-1.
>
> > - What kind of performance did your box achieve (req/s & response time)?
>
> On modest hardware (450Mhz K6-2/256MB/2x7200RPM IDE):
>
> ext3 maxed at about 60 reqs/sec on polymix-4, and about 70 on
> datacomm-1. Some modes performed worse than others, but I'd have to dig
> up my notes to be more specific.
>
> ReiserFS remained stable at about 85 req/sec on polymix-4, and about 95
> on datacomm-1.
>
> Response time is always what I consider 'good'. If a box doesn't remain
> under 2000ms average latency (the average latency of a machine
> performing extremely well on a polygraph workload is around 1500ms or
> less), I don't consider the run 'passed'. Hit rates are expected to be
> above 50%.
>
> I'd love to hear about your results. It would be nice to have some
> additional data points from other configurations.
> --
> Joe Cooper <joe@swelltech.com>
> Web caching appliances and support.
> http://www.swelltech.com
>
Received on Tue Oct 22 2002 - 21:14:46 MDT