Messages in this thread | | | From | Denis Vlasenko <> | Subject | Re: /proc/sys/vm/swappiness == 0 makes OOM killer go beserk | Date | Sat, 14 Jan 2006 17:45:56 +0200 |
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On Saturday 14 January 2006 15:53, Jim MacBaine wrote: > 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 > ...
Crude, but may work:
swapoff -a swapon -a
> 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. -- vda - 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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