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Old 10-06-2005, 08:25 AM   #1
gdipierro
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Registered: Jul 2005
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Upgraded to 2.6.1 and now glib and scheduler questions


Hi,
I started with a red hat 9 distro and upgraded the Kernel to 2.6.1. The main motivation for the change was the scheduler. I need this for an embeded project.

My first question is - will a later version of the kernel provide any significant improvements in the scheduler performance?"

The next question I have is whether or not to upgrade the glibc libraries to 2.4. I left the original kernel tree when I upgraded so I am ok with the 2.2 version. Is there any advantage to upgrading? asided from some posix features I could use is there an effect on the scheduler?

Any changes I make will incur 2-3 weeks of testing on current applications to make sure things did not break. So any advise would be appreciated.

Thanks
 
Old 10-06-2005, 11:08 AM   #2
Half_Elf
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Registered: Sep 2001
Location: Montreal, Canada
Distribution: Slackware; Debian; Gentoo...
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updating glibc is usually a very bad idea, especially on a broken/out-dated distro like RH. You have big chance to break the system. But yes, using a newer glibc could give you some performance improvement, especially if you enable the all new NPTL (Native Posix Thread Library) that would replace LinuxThread. This is especially true on a multiprocessor platform.

About the kernel version... well why do you stick to 2.6.1 ? Usually, the newer the better, at least about security. 2.6.1 is somewhat old now. But I don't know if this will give you any performance upgrade.
 
Old 10-07-2005, 08:29 AM   #3
gdipierro
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Registered: Jul 2005
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Thanks for the reply.

As for sticking with 2.6.1, between a deadline, testing requirements, software dependancies and a communication issue we need to stick with this version for the short term.

I'd like to upgrade again but I need to be able to justify it both to myself and the group. If I have to upgrade again I will probably start fresh with one of the fedora versions and deal with the dependancy issues as they come up.

Thanks again
 
  


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