Performance Tuning and RAID

[Martin Hepworth]

jeff

I'm running a a lot less kit than you and handling 9,000 messages a day
easily (along with MailWatch and it's associated mysql DB).

have you checked the amount of logging you are doing? ie is maillog etc
slowing you down? Also are the apache log files busy?

also you don't mention what version of everything you are running..

are you running the savi verion of sophos and what (if any) RBL's are
you using in SA or MS?

--
Martin Hepworth
Snr Systems Administrator
Solid State Logic
Tel: +44 (0)1865 842300

Jeff Falgout wrote:
> Dual Xeon 2.4s, 2GB Memory, 1 U160 disk -
> Red Hat 8.0 running Sendmail as MTA, Sophos, Clam, SA, BIND
> NSCD, and Apache (for Mailstats and Mailscanner-MRTG).
>
> I'm sitting here watching my MailScanner box jump up to a load of:
>
> 9:58am  up 208 days,  2:00,  3 users,  load average: 8.12, 9.08, 8.12
>
> And I'm only handling 25k messages/day on average (Yesterday I hit
> 33k)
> With the current outbreak, this box shouldn't be breaking a sweat, but
> it
> is.
>
>
> iostat shows:
> (The second disk, 8-1, is a dump disk not used by the os)
>
> [root at ww11 MailScanner]# iostat 5 5
> Linux 2.4.20-18.8smp (ww11.co.jefferson.co.us)  01/27/2004
>
> avg-cpu:  %user   %nice    %sys   %idle
>           14.21    0.00    3.66   82.12
>
> Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
> dev8-0           44.48       279.35       247.64 2022819822 1793200872
> dev8-1            0.84         0.00       277.22        288 2007401432
>
> avg-cpu:  %user   %nice    %sys   %idle
>           88.70    0.00   11.15    0.15
>
> Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
> dev8-0           70.20         0.00      2107.60          0      10538
> dev8-1            0.00         0.00         0.00          0          0
>
> avg-cpu:  %user   %nice    %sys   %idle
>           89.85    0.00    9.70    0.45
>
> Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
> dev8-0           64.80         0.00      1327.60          0       6638
> dev8-1            0.00         0.00         0.00          0          0
>
> avg-cpu:  %user   %nice    %sys   %idle
>           72.70    0.00   11.40   15.90
>
> Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
> dev8-0           69.40         0.00      1409.60          0       7048
> dev8-1            0.00         0.00         0.00          0          0
>
> avg-cpu:  %user   %nice    %sys   %idle
>           87.35    0.00   11.30    1.35
>
> Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
> dev8-0           64.80         0.00      2417.20          0      12086
> dev8-1            0.00         0.00         0.00          0          0
>
>
>
> I'm considering moving to a RAID 10 config.
>
> Is anyone running MS on RAID 10, and if so what kind of performance
> boost did you get. Any other ideas to increase performance.
> (I've got noatime set on the log filesystem and
> /var/spool/MailScanner/incoming on tmpfs)
>
> Jeff


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