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    SubjectRe: HighPoint 374
    Date
    BTW, isn't m0 supposed to reduce perfomance?

    [root@fulanito wd1200jb]# time dd if=/dev/zero of=filling count=20000
    bs=65536
    20000+0 records in
    20000+0 records out

    real 0m33.763s
    user 0m0.200s
    sys 0m10.920s
    [root@fulanito wd1200jb]# hdparm -m4 /dev/hdk

    /dev/hdk:
    setting multcount to 4
    multcount = 4 (on)
    [root@fulanito wd1200jb]# time dd if=/dev/zero of=filling count=20000
    bs=65536
    20000+0 records in
    20000+0 records out

    real 0m30.321s
    user 0m0.150s
    sys 0m10.630s
    [root@fulanito wd1200jb]# hdparm -m0 /dev/hdk

    /dev/hdk:
    setting multcount to 0
    multcount = 0 (off)
    [root@fulanito wd1200jb]# time dd if=/dev/zero of=filling count=20000
    bs=65536
    20000+0 records in
    20000+0 records out

    real 0m30.749s
    user 0m0.130s
    sys 0m10.900s
    [root@fulanito wd1200jb]#

    ----- Original Message -----
    From: "Svetoslav Slavtchev" <svetljo@gmx.de>
    To: "Tomi Orava" <Tomi.Orava@ncircle.nullnet.fi>
    Cc: <linux-kernel@vger.kernel.org>
    Sent: Monday, October 20, 2003 11:03
    Subject: Re: HighPoint 374


    > >
    > >
    > > >> Are you capable of trying if the hdparm -m0 trick
    > > >> works for you ?
    > > >
    > > > you mean the fs corruption on soft raid or the interupts problem ?
    > > > i dumped the raid setup as i couldn't find a way to debug it
    > > > and my drives are pretty full again, but i'll try to free some space
    > >
    > > I meant the interrupt problem, because if that problem exists
    > > there doesn't seem to be a reasonable way to figure out what
    > > is the reason for the filesystem corruption.
    > >
    > > > for the interupts
    > > > with test7-bk8 , acpi=off pci=noacpi &
    > > > hdparm -m0 -d1 -X69 /dev/hd[a,e,g]
    > > > hdparm -m16 -d1 -X69 /dev/hd[a,e,g]
    > > > i don't see timeouts
    > > > if i omit -m i do see them sometimes
    > >
    > > Ok, so if I understood you correctly, the interrupt problem
    > > persists _only_ if you leave the multiple sector setting on
    > > its default setting ? If you explicitly disable it, or set
    > > it to maximum it works fine ? Does it work with any value ?
    >
    > -m4 & -m8 seems to work OK
    > each time 3 runs of the dd test
    > 1 to hda
    > 2 to hde
    >
    > TCQ not activated
    >
    >
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