Called at CACRC.com, no reply.
If anybody has these parts lying around, please call me 772-4711.
Thanks,
John
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /pipermail/general_brlug.net/attachments/20050910/03b030cd/attachment.htm
From [EMAIL PROTECTED] Sat Sep 10 19:13:58 2005
From: [EMAIL PROTECTED] (-ray)
Date: Sat Sep 10 19:13:36 2005
Subject: [brlug-general] high load average - how to reduce
In-Reply-To: <[EMAIL PROTECTED]>
References: <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]>
Message-ID: <[EMAIL PROTECTED]>
Run iostat -p 1 and see if you can narrow it down to a particular
disk/partition that is getting nailed. That may give some clues.
Hopefully you don't have everything under one huge root partition (and
this is a great reason why you should not do that).
Also check vmstat 1 and watch the si (swap in) and so (swap out) columns
to see if you're swapping. A memory problem can manifest itself as a disk
bottleneck if you're excessively swapping.
Check your logs for faulty/failing disks... and failing disk may cause io
requests to hang... resulting in high io wait.
I'd suspect mysql before apache. There is a program called mysqltop that
will show the top queries hitting the db. I'd give it a shot.
ray
On Fri, 9 Sep 2005, Petri Laihonen wrote:
> Hi,
>
> Does anyone know how I can check which application is causing heavy CPU
> iowait on my webserver? I assume it is either Apache or MySql.
>
> Below you can see that load averages are getting very high during the day.
> All the way at the bottom is top section of "top" few minutes after
> restarting apache and mysql
>
>
> Sendmail section of logwatch........ (sendmail is not really used in this
> system except for internal stuff)
>
> Connections Rejected due to load average::
> Load Avg 100: 4 Times(s)
> Load Avg 102: 1 Times(s)
> Load Avg 104: 1 Times(s)
> Load Avg 108: 1 Times(s)
> Load Avg 24: 48 Times(s)
> Load Avg 25: 33 Times(s)
> Load Avg 26: 30 Times(s)
> Load Avg 27: 32 Times(s)
> Load Avg 28: 18 Times(s)
> Load Avg 29: 16 Times(s)
> Load Avg 30: 8 Times(s)
> Load Avg 31: 14 Times(s)
> Load Avg 32: 12 Times(s)
> Load Avg 33: 14 Times(s)
> Load Avg 34: 11 Times(s)
> Load Avg 35: 13 Times(s)
> Load Avg 36: 11 Times(s)
> Load Avg 37: 15 Times(s)
> Load Avg 38: 12 Times(s)
> Load Avg 39: 19 Times(s)
> Load Avg 40: 13 Times(s)
> Load Avg 41: 13 Times(s)
> Load Avg 42: 12 Times(s)
> Load Avg 43: 12 Times(s)
> Load Avg 44: 13 Times(s)
> Load Avg 45: 10 Times(s)
> Load Avg 46: 2 Times(s)
> Load Avg 47: 3 Times(s)
> Load Avg 48: 3 Times(s)
> Load Avg 50: 2 Times(s)
> Load Avg 51: 4 Times(s)
> Load Avg 52: 3 Times(s)
> Load Avg 54: 2 Times(s)
> Load Avg 56: 2 Times(s)
> Load Avg 57: 1 Times(s)
> Load Avg 58: 2 Times(s)
> Load Avg 60: 3 Times(s)
> Load Avg 61: 1 Times(s)
> Load Avg 62: 4 Times(s)
> Load Avg 63: 1 Times(s)
> Load Avg 64: 2 Times(s)
> Load Avg 65: 1 Times(s)
> Load Avg 68: 1 Times(s)
> Load Avg 69: 1 Times(s)
> Load Avg 72: 2 Times(s)
> Load Avg 73: 1 Times(s)
> Load Avg 75: 2 Times(s)
> Load Avg 78: 1 Times(s)
> Load Avg 81: 2 Times(s)
> Load Avg 82: 1 Times(s)
> Load Avg 84: 1 Times(s)
> Load Avg 85: 2 Times(s)
> Load Avg 88: 1 Times(s)
> Load Avg 89: 1 Times(s)
> Load Avg 90: 1 Times(s)
> Load Avg 92: 1 Times(s)
> Load Avg 93: 3 Times(s)
> Load Avg 94: 2 Times(s)
> Load Avg 98: 1 Times(s)
> Load Avg 99: 2 Times(s)
>
> 18:09:04 up 7 days, 12:23, 6 users, load average: 21.22, 22.38, 27.27
> 260 processes: 259 sleeping, 1 running, 0 zombie, 0 stopped
> CPU states: cpu user nice system irq softirq iowait idle
> total 51.6% 0.0% 24.8% 0.2% 0.2% 22.2% 0.5%
> cpu00 54.2% 0.0% 26.2% 0.0% 0.5% 17.6% 1.1%
> cpu01 49.1% 0.0% 23.4% 0.5% 0.0% 26.8% 0.0%
> Mem: 2057204k av, 2039080k used, 18124k free, 0k shrd, 46316k buff
> 1488624k actv, 366012k in_d, 30192k in_c
> Swap: 1052248k av, 42752k used, 1009496k free 1586648k
> cached
>
>
> regards,
> Petri
>
> _______________________________________________
> General mailing list
> [email protected]
> http://brlug.net/mailman/listinfo/general_brlug.net
>
--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Ray DeJean http://www.r-a-y.org
Systems Engineer Southeastern Louisiana University
IBM Certified Specialist AIX Administration, AIX Support
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
