[CentOS] load level?

[Ross S. W. Walker]

Jason Pyeron wrote:
> Kevin Faulkner wrote:
> > 
> > Perhaps you could run iotop find out if there is a process chewing up
> > your hard disks. You aren't just limited to top, you can  also use
> > vmstat and iostat in this situation.
> 
> After stoping httpd, sendmail and mysql:
> 
> # uptime 
>  15:48:02 up 167 days,  9:20,  5 users,  load average: 0.52, 0.55, 0.92
> 
> # vmstat
> 
> procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
>  r  b   swpd   free   buff  cache   si   so    bi    bo   in       cs us sy id wa
>  0  0    196 144668 153800 202860    0    0     3     9    1        2 13 12 75  0
> 
> 
> init(1)-+-atd(3370)
>         |-dbus-daemon-1(3392)
>         |-events/0(6)-+-aio/0(68)
>         |             |-aio/1(69)
>         |             |-kauditd(1973)
>         |             |-kblockd/0(9)
>         |             |-kblockd/1(10)
>         |             |-khelper(8)
>         |             `-pdflush(66)
>         |-events/1(7)-+-ata/0(450)
>         |             |-ata/1(451)
>         |             |-ata_aux(452)
>         |             |-kedac(1832)
>         |             `-pdflush(21556)
>         |-gpm(3313)
>         |-hald(3402)
>         |-irqbalance(3087)
>         |-khubd(11)
>         |-kjournald(494)
>         |-kjournald(2176)
>         |-klogd(3074)
>         |-kseriod(213)
>         |-ksoftirqd/0(3)
>         |-ksoftirqd/1(5)
>         |-kswapd0(67)
>         |-lockd(596)
>         |-login(3509)---bash(19184)
>         |-migration/0(2)
>         |-migration/1(4)
>         |-mingetty(3510)
>         |-mingetty(3511)
>         |-mingetty(3512)
>         |-mingetty(3513)
>         |-mingetty(3514)
>         |-minilogd(20220)
>         |-minilogd(22648)
>         |-portmap(26404)
>         |-rpciod(595)
>         |-scsi_eh_0(456)
>         |-scsi_eh_1(457)
>         |-scsi_eh_2(465)
>         |-scsi_eh_3(466)
>         |-scsi_eh_4(1998)
>         |-smartd(3155)
>         |-sshd(21029)-+-sshd(11899)---bash(11911)-+-pstree(14050)
>         |             |                           `-tail(12125)
>         |             |-sshd(12900)---sshd(12902)---bash(12913)
>         |             |-sshd(13882)---bash(13900)
>         |             `-sshd(23839)---bash(23841)
>         |-syslogd(3070)
>         |-udevd(7922)
>         |-usb-storage(1999)
>         |-xfs(3353)
>         |-xinetd(3215)
>         `-ypbind(14008)

Nice process tree, what generated it?

> # up2date --whatprovides iostat
> # up2date --whatprovides iotop

Try 'yum provides iostat'

> Where do I get iostat / iotop?

They're in the sysstat package

> Starting sendmail back up puts me in the high 1's to low 2's

I would think about isolating email then, especially if it's
handling it unfiltered from the Internet.

-Ross

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