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    SubjectRe: [PATCH] Laptop-mode v7 for linux 2.6.1
    Date
    On Monday 12 January 2004 13:19, Kiko Piris wrote:
    > On 12/01/2004 at 12:12, Jan De Luyck wrote:
    > > Patch applied, kernel built, laptop_mode activated, but my disk just
    > > doesn't want to spin down...
    >
    > [...]
    >
    > > But the disk never spins down. Not that I can tell, hdparm -C /dev/hda
    > > always tells me active/idle, and the sdsl tool also reports 100% disk
    > > spinning...
    > >
    > > anything else I have to activate/check?
    >
    > As you don't say if you have checked it, here goes my suggestion:
    >
    > First of all, you should assure there's no process doing reads [*] that
    > cause a cache miss (eg. daemons like postfix that check the queue every
    > few seconds). You can tell this running vmstat 1 and see that bi and bo
    > [**] stay at 0.

    vmstat 1:

    0 0 0 88748 37628 216216 0 0 0 0 1514 1130 7 4 89 0
    0 0 0 88756 37628 216216 0 0 0 0 1495 1123 6 1 93 0
    0 0 0 88748 37628 216216 0 0 0 0 1504 1114 8 4 88 0
    1 0 0 88748 37628 216216 0 0 0 0 1499 1058 6 2 92 0
    0 0 0 88748 37628 216216 0 0 0 0 1488 1062 7 4 89 0
    0 0 0 88748 37628 216216 0 0 0 0 1480 1007 7 6 87 0
    0 0 0 88876 37628 216216 0 0 0 0 1524 1122 7 6 87 0
    0 0 0 88748 37628 216216 0 0 0 0 1506 1078 11 6 83 0
    0 0 0 88748 37628 216216 0 0 0 0 1500 1057 11 5 84 0
    0 0 0 88748 37628 216216 0 0 0 0 1514 1040 16 3 81 0
    0 1 0 88748 37660 216216 0 0 0 28 1523 1041 19 4 64 13
    0 1 0 88748 37660 216216 0 0 0 0 1500 994 23 2 0 75
    0 0 0 88748 37660 216216 0 0 0 32 1540 1064 25 1 53 21
    0 0 0 88748 37660 216216 0 0 0 0 1501 1064 24 0 76 0
    0 0 0 88748 37660 216216 0 0 0 0 1514 1071 24 1 75 0
    2 0 0 88812 37660 216216 0 0 0 0 1518 1086 24 1 75 0
    0 0 0 88804 37660 216216 0 0 0 0 1504 1066 24 2 74 0
    0 0 0 88740 37660 216216 0 0 0 0 1482 1015 25 1 74 0

    At the presence of bo it spins up the disk.

    Jan
    --
    Only fools are quoted.
    -- Anonymous

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