Dear Yagi-san,
I heard from the horse's mouth that the CentOS team is working on the 100Hz centosplus kernel. I think your request triggered the action :-) They want make people happy.
That sounds nice! This TIPS, CONFIG_HZ=100, is one of FAQs. It will make most of us happy.
Now we can get kernel-vm package on dev.centos.org. Is it a test release of the special kernel? I installed the kernel-vm. Its change-log shows HZ=100. And the kernel seems better for clock interval on VMWare. Thanks a lot. Yuji
On 9/20/07, Yuji Tsuchimoto nox@sea-mew.jp wrote:
Dear Yagi-san,
I heard from the horse's mouth that the CentOS team is working on the 100Hz centosplus kernel. I think your request triggered the action :-) They want make people happy.
That sounds nice! This TIPS, CONFIG_HZ=100, is one of FAQs. It will make most of us happy.
Now we can get kernel-vm package on dev.centos.org. Is it a test release of the special kernel? I installed the kernel-vm. Its change-log shows HZ=100. And the kernel seems better for clock interval on VMWare. Thanks a lot. Yuji
Tsuchimoto-san,
Yes, they are in testing. Some of us have been running the 100HZ kernel for more than 2 months and have not seen any problem so far. If you wish to know more details about the development of the virtualization-optimized kernel, please take a look at:
http://bugs.centos.org/view.php?id=2189
And feel free to add any comments you have on that report.
Akemi
On Thu, 2007-09-20 at 15:46 -0700, Akemi Yagi wrote:
On 9/20/07, Yuji Tsuchimoto nox@sea-mew.jp wrote:
Dear Yagi-san,
I heard from the horse's mouth that the CentOS team is working on the 100Hz centosplus kernel. I think your request triggered the action :-) They want make people happy.
That sounds nice! This TIPS, CONFIG_HZ=100, is one of FAQs. It will make most of us happy.
Now we can get kernel-vm package on dev.centos.org. Is it a test release of the special kernel? I installed the kernel-vm. Its change-log shows HZ=100. And the kernel seems better for clock interval on VMWare. Thanks a lot. Yuji
Tsuchimoto-san,
Yes, they are in testing. Some of us have been running the 100HZ kernel for more than 2 months and have not seen any problem so far. If you wish to know more details about the development of the virtualization-optimized kernel, please take a look at:
http://bugs.centos.org/view.php?id=2189
And feel free to add any comments you have on that report.
Akemi _______________________________________________
Will the only deviation from the base/updates kernels be the decreased number of timer interrupts? Thanks.
On 9/21/07, Scott McClanahan scott.mcclanahan@trnswrks.com wrote:
On Thu, 2007-09-20 at 15:46 -0700, Akemi Yagi wrote:
On 9/20/07, Yuji Tsuchimoto nox@sea-mew.jp wrote:
Dear Yagi-san,
I heard from the horse's mouth that the CentOS team is working on the 100Hz centosplus kernel. I think your request triggered the action :-) They want make people happy.
That sounds nice! This TIPS, CONFIG_HZ=100, is one of FAQs. It will make most of us happy.
Now we can get kernel-vm package on dev.centos.org. Is it a test release of the special kernel? I installed the kernel-vm. Its change-log shows HZ=100. And the kernel seems better for clock interval on VMWare. Thanks a lot. Yuji
Tsuchimoto-san,
Yes, they are in testing. Some of us have been running the 100HZ kernel for more than 2 months and have not seen any problem so far. If you wish to know more details about the development of the virtualization-optimized kernel, please take a look at:
http://bugs.centos.org/view.php?id=2189
And feel free to add any comments you have on that report.
Akemi _______________________________________________
Will the only deviation from the base/updates kernels be the decreased number of timer interrupts? Thanks.
Yes, that is the only difference between the standard kernel and kernel-vm. We do have a CentOS 5 i686 UP version which gives slightly better performance than the default SMP. But this is not an official version.
Akemi
On Fri, 2007-09-21 at 06:22 -0700, Akemi Yagi wrote:
On 9/21/07, Scott McClanahan scott.mcclanahan@trnswrks.com wrote:
On Thu, 2007-09-20 at 15:46 -0700, Akemi Yagi wrote:
On 9/20/07, Yuji Tsuchimoto nox@sea-mew.jp wrote:
Dear Yagi-san,
I heard from the horse's mouth that the CentOS team is working on the 100Hz centosplus kernel. I think your request triggered the action :-) They want make people happy.
That sounds nice! This TIPS, CONFIG_HZ=100, is one of FAQs. It will make most of us happy.
Now we can get kernel-vm package on dev.centos.org. Is it a test release of the special kernel? I installed the kernel-vm. Its change-log shows HZ=100. And the kernel seems better for clock interval on VMWare. Thanks a lot. Yuji
Tsuchimoto-san,
Yes, they are in testing. Some of us have been running the 100HZ kernel for more than 2 months and have not seen any problem so far. If you wish to know more details about the development of the virtualization-optimized kernel, please take a look at:
http://bugs.centos.org/view.php?id=2189
And feel free to add any comments you have on that report.
Akemi _______________________________________________
Will the only deviation from the base/updates kernels be the decreased number of timer interrupts? Thanks.
Yes, that is the only difference between the standard kernel and kernel-vm. We do have a CentOS 5 i686 UP version which gives slightly better performance than the default SMP. But this is not an official version.
Akemi _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/cent
Not sure if this was mentioned earlier in the thread but I just watched a session from vmworld and they commented that more recent releases of the linux kernel set CONFIG_HZ=250. Can anyone comment on the truth to that and how relative it is to the CentOS distro? Thanks.
On 9/28/07, Scott McClanahan scott.mcclanahan@trnswrks.com wrote:
Not sure if this was mentioned earlier in the thread but I just watched a session from vmworld and they commented that more recent releases of the linux kernel set CONFIG_HZ=250. Can anyone comment on the truth to that and how relative it is to the CentOS distro? Thanks.
CentOS kernels (both 4 and 5) are set to 1000Hz by default. The exception is the xen kernels which are set to 250Hz.
Akemi
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Akemi Yagi -
Scott McClanahan -
Yuji Tsuchimoto