Tru Huynh schrieb:
>
> Hello,
>
> It looks like a kernel SMP issue more than a 3ware driver
> problem.
> - I have tried the following SMP kernels:
> 2.4.3-xfs-1.0.1 and 2.4.7pre8 cvs version which include
> the same 3ware 3w-xxxx driver. (I have not yet flash the firmware).
> - I can see it on a plain IDE raid5 partition.
>
> I will now flash the 3ware card firmware. but I don't
> know what that can change...
>
> Next step is rebooting with noapic.
>
> /dev/md1 is now a raid5-xfs on the system HD
> #-------------------------------
> # raid5 on hda
> #-------------------------------
> raiddev /dev/md1
> raid-level 5
> nr-raid-disks 3
> persistent-superblock 1
> chunk-size 64
> parity-algorithm left-symmetric
> #
> device /dev/hda6
> raid-disk 0
> device /dev/hda7
> raid-disk 1
> device /dev/hda8
> raid-disk 2
>
> I can still see the nfs freeze (server nfs.cluster not responding)
> on both raid5 devices under 2.4.3-xfs. on the client side
> syslog reports a "nfs_statfs: statfs error = 116 ".
>
> I can still see it under 2.4.7pre8 on /dev/md0 or /dev/md1
> but only after a little longer time...
>
> Off topic: One strange thing is the checksumming function:
> /var/log/messages
> kernel: raid5: measuring checksumming speed
> kernel: 8regs : 1169.200 MB/sec
> kernel: 32regs : 788.000 MB/sec
> kernel: pIII_sse : 1727.600 MB/sec
> kernel: pII_mmx : 1924.000 MB/sec
> kernel: p5_mmx : 2045.200 MB/sec
> kernel: raid5: using function: pIII_sse (1727.600 MB/sec)
I'm not an expert but I think it has something to do with
pIII_sse being cache friendly while the mmx functions are
not. Maybe I'm wrong but I remember something like that.
>
> Why not using the faster p5_mmx ?
>
> > > >4) try SMP+raid5 on local IDE HD to rule out 3ware issue
> ruled out. :(
>
> Tru
> --
> Dr Tru Huynh | Bioinformatique Structurale
> mailto:tru@xxxxxxxxxx | tel/fax +33 1 45 68 87 37/19
> Institut Pasteur, 25-28 rue du Docteur Roux, 75724 Paris CEDEX 15 France
--
Simon Matter Tel: +41 61 695 57 35
Fr.Sauter AG / CIT Fax: +41 61 695 53 30
Im Surinam 55
CH-4016 Basel [mailto:simon.matter@xxxxxxxxxxxxxxxx]
|