Messages in this thread | | | From | "Khimenko Victor" <> | Date | Fri, 23 Jul 1999 12:03:42 +0400 (MSD) | Subject | Re: Measured overhead of timer interrupts |
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In <19990723032046.B3992@fred.muc.de> Andi Kleen (ak@muc.de) wrote: AK> On Fri, Jul 23, 1999 at 02:58:35AM +0200, Khimenko Victor wrote: >> In <19990723003639.B3385@fred.muc.de> Andi Kleen (ak@muc.de) wrote: >> AK> On Thu, Jul 22, 1999 at 09:12:22PM +0200, Khimenko Victor wrote: >> >> In <19990722171109.A1783@fred.muc.de> Andi Kleen (ak@muc.de) wrote: >> >> > On Thu, Jul 22, 1999 at 05:02:14PM +0200, Ingo Molnar wrote: >> >> >> >> >> >> On 22 Jul 1999, Andi Kleen wrote: >> >> >> >> >> >> > It is a kernel bug, HZ is not exported. Actually two, because none of >> >> >> > the /proc should have used it as units, but that cannot be fixed anymore. >> >> >> >> >> >> why cannot it be fixed? >> >> >> >> > because that would break the interface. >> >> >> >> /proc interface are in permanent change. We should keep it consistent in one >> >> stable kernel series but I see no reason to keep it consistent between major >> >> kernel updates: quite a lot of things will be changed anyway. >> >> AK> This is not really true. There are new columns or lines added to /proc >> AK> files, but old ones are not changes, and correctly writen /proc parsers >> AK> should not break (unfortunately there are lots of incorrectly writen >> AK> proc parser around..) >> >> I yet to see "correct parser" with ability to find out file-max, file-nr, >> inode-max and inode0-nr moved from /proc/sys/kernel in 2.0 to >> /proc/sys/fs in 2.2...
AK> /proc and /proc/sys are different things. I meant /proc files.
Not sure why /proc and /proc/sys are SO different...
>> >> Concerning HZ: what are those sysctls ? How many programs use them ?
AK> See Documentation/proc.txt
AK> Mainly users do, but they still cannot broken, because they are already AK> deeply embedded in many startup scripts.
Startup SCRIPTS can be easily fixed/rewritten. No problem to me at all. It was needed for 2.0 => 2.2 transition, I see no reason to have 2.2 => 2.4 different...
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