* 2.4.x vs 2.6.x performance @ 2006-01-23 4:24 Frank 2006-01-25 15:45 ` Dan Malek 2006-01-25 20:14 ` Carlos Munoz 0 siblings, 2 replies; 6+ messages in thread From: Frank @ 2006-01-23 4:24 UTC (permalink / raw) To: linuxppc-embedded I remember reading a while back that the 2.6 kernel is considerably slower then the 2.4 kernel (Wolfgang Denx). Has anybody taken any performance measurements on a later kernel version to see if the above still hods true? I'm thinking about moving to 2.6 since a lot of open source projects have stopped suporting the 2.4 kernel. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.x vs 2.6.x performance 2006-01-23 4:24 2.4.x vs 2.6.x performance Frank @ 2006-01-25 15:45 ` Dan Malek 2006-01-25 15:55 ` Frank 2006-01-25 18:41 ` Otto Solares 2006-01-25 20:14 ` Carlos Munoz 1 sibling, 2 replies; 6+ messages in thread From: Dan Malek @ 2006-01-25 15:45 UTC (permalink / raw) To: Frank; +Cc: linuxppc-embedded On Jan 22, 2006, at 8:24 PM, Frank wrote: > I remember reading a while back that the 2.6 kernel is > considerably slower I wouldn't say "considerably" slower, but there are some performance differences. It's most evident on the smaller, slower processors, like the 8xx, but we have taken steps to alleviate that. The problem is 2.6 is just bigger with more stuff in it. You want the new features, you have to pay for that somewhere. I think it would help if the kernel was a little more configurable for embedded systems. It seems there is just too much stuff in a basic kernel that I wish could be stripped out. > I'm thinking about moving to 2.6 since a lot of open source > projects have stopped suporting the 2.4 kernel. You know, this is a "community effort", not "when are you going to fix it for me" :-) Use 2.6, measure it using your application, and submit updates that improve it. Some of us have already done quite a bit, so do your part, too. Thanks. -- Dan ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.x vs 2.6.x performance 2006-01-25 15:45 ` Dan Malek @ 2006-01-25 15:55 ` Frank 2006-01-25 18:41 ` Otto Solares 1 sibling, 0 replies; 6+ messages in thread From: Frank @ 2006-01-25 15:55 UTC (permalink / raw) To: Dan Malek; +Cc: linuxppc-embedded --- Dan MaleMalekn@daneembeddedalley> wrote: > > On Jan 22, 2006, at 8:24 PM, Frank wrote: > > > I remember reading a while back that the 2.6 kernel is > > considerably slower > > I wouldn't say "considerably" slower, but there are some > performance differences. It's most evident on the > smaller, slower processors, like the 8xx, but we have > taken steps to alleviate that. The problem is 2.6 is just > bigger with more stuff in it. You want the new features, > you have to pay for that somewhere. I think it would > help if the kernel was a little more configurable for > embedded systems. It seems there is just too much > stuff in a basic kernel that I wish could be stripped out. > > > I'm thinking about moving to 2.6 since a lot of open source > > projects have stopped suposuporting 2.4 kernel. > > You know, this is a "community effort", not "when are you > going to fix it for me" :-) Use 2.6, measure it using your > application, and submit updates that improve it. Some of > us have already done quite a bit, so do your part, too. > > Thanks. > > -- Dan I wasn't implying problems with 2.6 kernel would preclude me from using it and fixing problems. I just wanted to know what to expect so I can adjust my schedule accordingly Thanks for the reply... __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.x vs 2.6.x performance 2006-01-25 15:45 ` Dan Malek 2006-01-25 15:55 ` Frank @ 2006-01-25 18:41 ` Otto Solares 1 sibling, 0 replies; 6+ messages in thread From: Otto Solares @ 2006-01-25 18:41 UTC (permalink / raw) To: Dan Malek; +Cc: linuxppc-embedded On Wed, Jan 25, 2006 at 07:45:38AM -0800, Dan Malek wrote: > I wouldn't say "considerably" slower, but there are some > performance differences. It's most evident on the > smaller, slower processors, like the 8xx, but we have > taken steps to alleviate that. The problem is 2.6 is just > bigger with more stuff in it. You want the new features, > you have to pay for that somewhere. I think it would > help if the kernel was a little more configurable for > embedded systems. It seems there is just too much > stuff in a basic kernel that I wish could be stripped out. Many things can be stripped out with LinuxTiny patches: http://www.selenic.com/linux-tiny/ -otto ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.x vs 2.6.x performance 2006-01-23 4:24 2.4.x vs 2.6.x performance Frank 2006-01-25 15:45 ` Dan Malek @ 2006-01-25 20:14 ` Carlos Munoz 2006-01-25 23:46 ` Frank 1 sibling, 1 reply; 6+ messages in thread From: Carlos Munoz @ 2006-01-25 20:14 UTC (permalink / raw) To: Frank; +Cc: linuxppc-embedded Frank wrote: >I remember reading a while back that the 2.6 kernel is >considerably slower then the 2.4 kernel (Wolfgang Denx). Has >anybody taken any performance measurements on a later kernel >version to see if the above still hods true? > >I'm thinking about moving to 2.6 since a lot of open source >projects have stopped suporting the 2.4 kernel. > >__________________________________________________ >Do You Yahoo!? >Tired of spam? Yahoo! Mail has the best spam protection around >http://mail.yahoo.com >_______________________________________________ >Linuxppc-embedded mailing list >Linuxppc-embedded@ozlabs•org >https://ozlabs.org/mailman/listinfo/linuxppc-embedded > > Hi Frank, While at my previous company we tried to move to the 2.6 kernel (can't remember the version, however it was a little over a year ago) from the 2.4.20 kernel. The 2.6 kernel could not keep up with our stress tests, not even close. Unfortunately, I don't have any hard data. We spent about 2 weeks trying to figure out why the performance degradation. However, since there was no real need to use the 2.6 kernel other than for better performance, and due to other pressing projects, management decided to put on hold the upgrade to 2.6, and as far as I know they are still on the 2.4 kernel. A lot has changed on 2.6 since then, so maybe the performance is better now. You can always compare them both and post your results. Thanks, Carlos Munoz ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.x vs 2.6.x performance 2006-01-25 20:14 ` Carlos Munoz @ 2006-01-25 23:46 ` Frank 0 siblings, 0 replies; 6+ messages in thread From: Frank @ 2006-01-25 23:46 UTC (permalink / raw) To: Carlos Munoz; +Cc: linuxppc-embedded --- Carlos Munoz <carlos@kenati•com> wrote: > Frank wrote: > > >I remember reading a while back that the 2.6 kernel is > >considerably slower then the 2.4 kernel (Wolfgang Denx). Has > >anybody taken any performance measurements on a later kernel > >version to see if the above still hods true? > > > >I'm thinking about moving to 2.6 since a lot of open source > >projects have stopped suporting the 2.4 kernel. > > > >__________________________________________________ > >Do You Yahoo!? > >Tired of spam? Yahoo! Mail has the best spam protection > around > >http://mail.yahoo.com > >_______________________________________________ > >Linuxppc-embedded mailing list > >Linuxppc-embedded@ozlabs•org > >https://ozlabs.org/mailman/listinfo/linuxppc-embedded > > > > > Hi Frank, > > While at my previous company we tried to move to the 2.6 > kernel (can't > remember the version, however it was a little over a year ago) > from the > 2.4.20 kernel. The 2.6 kernel could not keep up with our > stress tests, > not even close. Unfortunately, I don't have any hard data. We > spent > about 2 weeks trying to figure out why the performance > degradation. > However, since there was no real need to use the 2.6 kernel > other than > for better performance, and due to other pressing projects, > management > decided to put on hold the upgrade to 2.6, and as far as I > know they are > still on the 2.4 kernel. A lot has changed on 2.6 since then, > so maybe > the performance is better now. You can always compare them > both and post > your results. > > Thanks, > > > Carlos Munoz Thanks, I let eneryone know what i find out... __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2006-01-25 23:46 UTC | newest] Thread overview: 6+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2006-01-23 4:24 2.4.x vs 2.6.x performance Frank 2006-01-25 15:45 ` Dan Malek 2006-01-25 15:55 ` Frank 2006-01-25 18:41 ` Otto Solares 2006-01-25 20:14 ` Carlos Munoz 2006-01-25 23:46 ` Frank
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