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On 11/27/2010 11:34 PM, Stroller wrote: |
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> |
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> On 27/11/2010, at 4:29pm, Nikos Chantziaras wrote: |
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>> ... |
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>> The way I solved the I/O problems is to use the sys-kernel/ck-sources kernel (2.6.36-r3). It shouldn't be necessary to use ionice and schedtool for most tasks, but I use it for portage with this in make.conf: |
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>> |
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>> PORTAGE_NICENESS=19 |
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>> PORTAGE_IONICE_COMMAND="sh -c \"schedtool -D \${PID}; ionice -c 3 -p \${PID}\"" |
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>> |
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>> But you can use this method for everything you want. Running something with nice -19, ionice -c3 and schedtool -D should make it pretty much invisible; it should have zero impact on interactivity. At least that's the case here when using sys-kernel/ck-sources. |
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> |
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> Does using the ck-sources kernel reduce the necessity to use ionice? |
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To some degree, yes. |
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> For some reason I find myself a little reluctant to mess with the CFQ group scheduling. |
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The ck patch set does not support group scheduling anyway; it's supposed |
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to be non-configurable and "just work." So you can install it, copy |
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your .config file over, do "make oldconfig" and then build, install, |
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boot it, and see whether it helps in your situation. |
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