Messages in this thread | | | Date | Sat, 14 Jan 2006 14:53:44 +0100 | From | Jim MacBaine <> | Subject | Re: /proc/sys/vm/swappiness == 0 makes OOM killer go beserk |
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On 1/14/06, Nick Craig-Wood <nick@craig-wood.com> wrote:
> On my home workstation I do a lot of stuff with very large video > files, so set swappiness to 0 some time ago so using these large files > would stop all the applications getting pushed out into swap.
My motivation was similar: My desktop usually runs 24 hrs and I leave large applications which I use from time to time always open. Like OpenOffice, Firefox, Emacs with large buffers, etc. In the night, the machine performs two disk-intensive tasks. First a backup then updatedb. And every morning about 650 MB of 1 GB RAM is used for caches and all my application need to be swapped in before I can use them.
Of course, the increase of disk cache is reasonable for those tasks, but honestly, I don't care whether the updatedb process takes 10 or 20 minutes in the night. But I do care if switching between applications needs >10 seconds in the morning.
Would it be possible to trigger paging in specific applications from userspace? So I might run something like
echo -n firefox-bin > /proc/sys/vm/page-in echo -n soffice-bin > /proc/sys/vm/page-in ...
after my nightly cron jobs have filled the memory with disk cache data that won't be useful anymore, because in my daily work I rarely touch 10% of the filesystem.
Regards, Jim - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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