Flushing out pdflush
Posted Apr 6, 2009 19:31 UTC (Mon) by nix (subscriber, #2304)
Posted Apr 17, 2009 12:41 UTC (Fri) by axboe (subscriber, #904)
It's mostly to satisfy the people getting annoyed when looking at the ps output. An idle kernel thread is essentially free. Of course if you have 10000 logical disks in your system, you'll probably appreciate not spending memory on the threads at least.
Posted Apr 17, 2009 22:29 UTC (Fri) by nix (subscriber, #2304)
(Also, kernel threads still need a kernel stack: that's 8Kb of memory you
won't see again. Not much by modern standard perhaps...)
Posted Apr 17, 2009 23:43 UTC (Fri) by njs (guest, #40338)
But anyway, yeah, for ordinary systems the memory usage matters a little but not much.
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