Messages in this thread | | | Date | Mon, 2 Apr 2012 10:58:50 -0600 | From | Jonathan Corbet <> | Subject | Re: dramatic I/O slowdown after upgrading 2.6.32->3.0 |
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On Fri, 30 Mar 2012 20:50:54 +0400 Michael Tokarev <mjt@tls.msk.ru> wrote:
> I'm observing a dramatic slowdown of several hosts after upgrading > from 2.6.32.y to 3.0.x i686 kernels (in both cases from kernel.org, > on both cases the last version is relatively latest). > > On 2.6.32 everything is fast. On 3.0 the same operations which goes > instantly takes ages to complete. [...] > What's the way to debug this issue?
There is a huge gap between those two kernels, so nobody is going to have much luck guessing about what has changed. A good first step might be to do a binary search among the intermediate kernel releases to figure out which one slowed things down for you.
jon
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