Monitor Disk Usage (Unusual Load Avgs)
Kevin D. Kinsey, DaleCo, S.P.
kdk at daleco.biz
Fri Aug 13 07:37:09 PDT 2004
Steven Adams wrote:
>Dual p4 xeon 2.4 (4virtual cpus)
>1gig ecc ram
>5x 36gig 10k rpm scsi on a ami megaraid
>I only host a few web sites on this server which at the most peak hour of
>times there is only about 6-7%cpu usage. For some reason my load avg's will
>jump from 0.05 to 0.98 even to 1.50 when the cpu is only using 3%.
>I am thinking something is using the hard drive as I have load avg peaks of
>I want to find out what is causing this as im curious to why they get so
>Does anyone know how to find out what running processes are using the
>harddrive or something like that??
>Also how do I check if DMA mode is enabled, I know there is a hdparm in
>linux but I cant find anything like that for freebsd..
>Thanks for you help
As for that last, I'm sure there are probably several
ways, but I'm a simpleton. Why not:
% dmesg | grep DMA
atapci0: <SiS 962/963 UDMA133 controller> port 0x4000-0x400f,0x374-0x377,
0x170-0x177,0x3f4-0x3f7,0x1f0-0x1f7 at device 2.5 on pci0
ad0: 38166MB <ST340014A> [77545/16/63] at ata0-master UDMA100
Hrmm, I need to see if my disk'll go faster ... ;-)
PS > Incidentally, what's up with this?
% finger drift at freebsd.org
finger: drift: no such user
I'm leaving that address in, just in case something's
not quite right with finger(1)*, but whassup if it's
(*which is entirely possible, I suppose)
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