Please CC to me unless you answer to linux-fsdevel as well. I am not subscribed to linux-kernel. Hi! I am searching documentation about CFQ io scheduler. I can't find it in linux 2.6.26 Documentation directory. I found about these in german[1]: back_seek_max:16384 back_seek_penalty:2 fifo_expire_async:250 fifo_expire_sync:123 quantum:4 But I am completely missing about these: slice_async:40 slice_async_rq:2 slice_idle:6 slice_sync:100 AFAIR there has been a documentation file somewhere, but I can't find it: ms@mango> grep -ir "cfq" * ~/lokal/Kernel/linux-2.6.26/Documentation/block 00-INDEX: - Block io priorities (in CFQ scheduler) ioprio.txt:With the introduction of cfq v3 (aka cfq-ts or time sliced cfq), basic io ioprio.txt:with cfq; other io schedulers do not support io priorities thus far. ioprio.txt:CFQ implements three generic scheduling classes that determine how io is switching-sched.txt:'noop', 'as' and 'cfq' (the default) are also available. IO schedulers are switching-sched.txt:for instance, to set the CFQ scheduler for the system default, but switching-sched.txt:noop anticipatory deadline [cfq] switching-sched.txt:noop [anticipatory] deadline cfq (unlike as-iosched.txt) I am willing to write that documentation if someone explain these to me so that I understand them ;-). [1] http://www.linux-magazin.de/heft_abo/ausgaben/2005/04/kern_technik/(offset)/4 Ciao, -- Martin Steigerwald - team(ix) GmbH - http://www.teamix.de gpg: 19E3 8D42 896F D004 08AC A0CA 1E10 C593 0399 AE90
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