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Am 05.12.2010 15:55, schrieb Florian Philipp: |
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> Am 04.12.2010 22:00, schrieb Mark Knecht: |
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>> On Fri, Dec 3, 2010 at 6:16 PM, William Kenworthy <billk@×××××××××.au> wrote: |
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>>> On Fri, 2010-12-03 at 17:20 -0800, Mark Knecht wrote: |
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>>>> On Fri, Dec 3, 2010 at 4:41 PM, William Kenworthy <billk@×××××××××.au> wrote: |
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>>>>> Re the discussion on cgroups on the 24/25 november - on my old AMD |
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>>>>> barton 2500+ desktop - in the past a load of anything more than 5 made |
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>>>>> it very painful to use. Add in running windows in a qemu vm at the same |
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>>>>> time (all in 1.5G ram) and its almost unusable as an interactive |
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>>>>> desktop. |
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>>>>> |
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>>>>> Now, with Florians (thanks for the scripts) version of using it on |
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>>>>> gentoo, even at a load in excess of 12, its almost as good as with no |
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>>>>> load for desktop operations! |
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>>>>> |
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>>>>> To get the high load I am compiling a new kernel, running win2k in qemu, |
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>>>>> emerging latest updates, browsing the web and reading email in |
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>>>>> evolution, running updatedb and other cron jobs (just restarted after a |
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>>>>> tuxonice hibernate so everything is triggering at once!). |
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>>>>> |
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>>>>> Really, really, really neat! |
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>> |
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>> If you're up for it maybe try putting doing a Gentoo Wiki page. |
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>> |
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>> Sounds like it's working pretty well. I'd like to try it but I don't |
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>> have much time to focus on digging out the info. |
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> |
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> As you wish: |
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> http://en.gentoo-wiki.com/wiki/Improve_responsiveness_with_cgroups |
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> |
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> I welcome any improvements. This is my first wiki article and English is |
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> not my mother tongue. |
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> |
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Hmm, I just noticed that something is not right here: Everything works |
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fine as long as I limit the cgroups to cpu scheduling (`mount -t cgroup |
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cgroup /dev/cgroup -o cpu`). As soon as I add the blkio subsystem for |
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disk I/O scheduling ("-o cpu,blkio" or no "-o" at all), I can no longer |
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create cgroup hierarchies. Only the top level "user" cgroup is accepted. |
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Another issue is that the kernel documentation in |
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/usr/src/linux/Documentation/cgroups/cgroups.txt specifies that the |
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release_agent can also be included as a mount option with |
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`mount -t cgroup cgroup /dev/cgroup -o |
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cpu,release_agent='/usr/local/sbin/cgroup_clean'` |
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That seems to be no valid option, though. At least on my system it |
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causes mount to fail. Unfortunately there is no output on dmesg. |
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Can someone else reproduce this? I'm on gentoo-sources-2.6.34-r12. |
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Thanks in advance! |
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Florian Philipp |
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