Re: Question about memory usage in 2.4 vs 2.2

Josh Grebe (squash@primary.net)
Tue, 20 Mar 2001 14:29:47 -0600 (CST)


As far as performance goes, I can only say that my max load is slightly
lower on the 2.4 box then on the 2.2 boxes. Our average load for yesterday
on 2.4 was .23, with a max of 1.11. In comparison, my averages for the
other machines are .27, .27, .23, and .23. The maxes are 1.85, 1.33, 2.06,
1.47.

As far as speed goes, I am not able to measure any real difference (only
testing pop3) between 2.2 and 2.4. I would blame this on the NAS device, a
NetApp Filer F760 being only able to push about 110mbit sustained on the
gig-e network.

Thanks,

Josh

---
Josh Grebe
Senior Unix Systems Administrator
Primary Network, an MPower Company
http://www.primary.net

On Tue, 20 Mar 2001, [iso-8859-1] Jakob Østergaard wrote:

> On Tue, Mar 20, 2001 at 11:01:52AM -0600, Josh Grebe wrote: > > Greetings, > ... > > Doing the math, the 2.4 machine is using 44% of available memory, while > > the 2.2 is using only about 14%. > > How is the performance difference ? > > ... > > These machines are dual P2-400's, with 512M ECC ram, adaptec 2940, and > > dual intel etherexpress pro 100 cards. > > > > I also tried 2.4.2-ac20 with similar results. > > > > Am I missing something here? I'd really like to move the farm back up to > > 2.4 series. > > Free memory is wasted memory. It seemed like 2.4 wasted a lot less memory > than 2.2 on your workload. > > Could you do some performance measurements (eg. average latency on IMAP > connection or something like that) ? It would be great to know wheter > 2.4 is better or worse than 2.2 (it's most likely better, since it probably > uses the memory better, but it would be nice to know) > > -- > ................................................................ > : jakob@unthought.net : And I see the elder races, : > :.........................: putrid forms of man : > : Jakob Østergaard : See him rise and claim the earth, : > : OZ9ABN : his downfall is at hand. : > :.........................:............{Konkhra}...............: >

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