Messages in this thread | | | Date | Sat, 06 Jan 2007 15:50:41 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [KORG] Re: kernel.org lies about latest -mm kernel |
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Andrew Morton wrote: >>> >>> The most fundamental problem seems to be that I can't tell currnt Linux >>> kernels that the dcache/icache is precious, and that it's way too eager >>> to dump dcache and icache in favour of data blocks. If I could do that, >>> this problem would be much, much smaller. > > Usually people complain about the exact opposite of this. > >> Isn't setting the vm.vfs_cache_pressure sysctl below 100 supposed to do >> this? > > yup.
Well, it appears that even a setting of 1 is too aggressive for kernel.org. We're still ending up with each and every getdents() call taking anywhere from 200 ms to over a second.
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