LAMP / Wordpress sporadic hangs...

Hi -

I just migrated a couple of sites to a Linode 768 running Ubuntu LAMP. One site is Wordpress. The WP site gets 10K pageviews per week.

I turned on wpsupercache but I still I get sporadic hangs on the WP site well as long waits/resets trying to connect to Webmin. The IO and CPU graphs look wacky.

~~http://kleptonomicon.com/images/graphs.jpg" />

ps auxc

root 957 0.0 0.0 0 0 ? S 2010 0:00 kstriped

root 959 0.0 0.0 0 0 ? S 2010 0:00 ksnapd

root 974 0.0 0.0 0 0 ? S 2010 0:59 kjournald

root 1002 0.0 0.0 2404 664 ? S 2010 0:02 upstart-udev-br

root 1469 0.0 1.0 34720 8004 ? Ss 05:37 0:00 apache2

postfix 1911 0.0 0.2 5828 1704 ? S 06:08 0:00 pickup

www-data 1969 2.5 3.5 54396 27108 ? S 06:09 0:21 apache2

root 2033 0.0 0.0 2376 676 ? Ss 2010 0:07 cron

root 2053 0.0 0.0 0 0 ? S 2010 0:37 flush-202:0

www-data 2088 6.5 3.4 53768 26768 ? S 06:20 0:11 apache2

www-data 2089 3.3 3.2 52240 25140 ? S 06:20 0:06 apache2

www-data 2096 1.4 2.8 48840 21820 ? S 06:20 0:02 apache2

root 2099 0.0 0.0 2232 356 ? Ss 2010 0:00 dhclient3

www-data 2101 4.3 2.8 48740 21712 ? S 06:20 0:07 apache2

www-data 2102 2.9 2.7 47960 20904 ? S 06:20 0:05 apache2

www-data 2133 3.5 3.2 52724 25380 ? S 06:21 0:04 apache2

www-data 2138 3.0 2.8 49084 21800 ? S 06:22 0:02 apache2

www-data 2145 2.4 2.7 48060 20852 ? S 06:22 0:01 apache2

www-data 2146 1.9 2.7 48380 21364 ? R 06:22 0:01 apache2

root 2149 0.0 0.0 4036 444 ? Ss 2010 0:06 vsftpd

www-data 2150 2.4 2.6 47276 20216 ? S 06:22 0:01 apache2

rob 2154 0.0 0.1 2432 964 pts/1 R+ 06:23 0:00 ps

rob 2155 0.0 0.0 2024 680 pts/1 S+ 06:23 0:00 more

ntp 2256 0.0 0.1 4408 840 ? Ss 2010 0:01 ntpd

root 2263 0.0 0.1 5812 824 ? Ss 2010 0:36 master

postfix 2284 0.0 0.1 5964 1008 ? S 2010 0:07 qmgr

root 2374 0.0 0.0 1788 412 hvc0 Ss+ 2010 0:00 getty

root 22998 0.0 0.3 13908 2944 ? Ss Jan03 4:29 miniserv.pl

mysql 26570 2.2 9.0 385964 69820 ? Ssl Jan28 227:38 mysqld

daemon 28025 0.0 0.0 2248 292 ? Ss Jan28 0:00 atd

root 29242 0.0 0.1 5548 1388 ? Ss Jan28 0:03 sshd

root 29470 0.0 0.1 8352 1432 ? Ss 01:09 0:00 sshd

rob 29482 0.0 0.1 8512 924 ? S 01:09 0:01 sshd

rob 29483 0.0 0.1 3096 788 pts/2 Ss 01:09 0:00 bash

rob 29494 0.2 0.1 2548 1012 pts/2 S+ 01:09 0:42 top

syslog 29596 0.0 0.1 21096 1172 ? Sl Jan28 0:06 rsyslogd

root 29738 0.0 0.0 2184 464 ? S ~~root 29756 0.0 0.0 2180 432 ? S< Jan28 0:00 udevd

root 32521 0.0 0.2 8552 1728 ? Ss 04:11 0:00 sshd

rob 32535 0.0 0.1 8552 996 ? S 04:11 0:00 sshd

rob 32536 0.0 0.1 3104 1404 pts/1 Ss 04:11 0:00 bash

free -m

total used free shared buffers cached

Mem: 751 565 185 0 23 259

-/+ buffers/cache: 283 467

Swap: 255 49 206

/server-status

Apache Server Status for cantstopthebleeding.com

Server Version: Apache/2.2.14 (Ubuntu) PHP/5.3.2-1ubuntu4.7 with Suhosin-Patch mod_ssl/2.2.14 OpenSSL/0.9.8k

Server Built: Nov 18 2010 21:17:19

Current Time: Friday, 04-Feb-2011 06:00:30 UTC

Restart Time: Friday, 04-Feb-2011 05:37:23 UTC

Parent Server Generation: 0

Server uptime: 23 minutes 6 seconds

11 requests currently being processed, 4 idle workers

KWKKKK.KCC……K..K………………………………….

……………………………………………………….

……………………………………………………….

……………………………………………………….

PID Key:

1780 in state: _ , 1749 in state: K , 1781 in state: W

1611 in state: K , 1782 in state: _ , 1762 in state: K

1738 in state: K , 1512 in state: _ , 1763 in state: K

1752 in state: _ , 1765 in state: K , 1753 in state: C

1766 in state: C , 1759 in state: K , 1713 in state: K

To obtain a full report with current status information you need to use the ExtendedStatus On directive.

SSL/TLS Session Cache Status:

cache type: SHMCB, shared memory: 512000 bytes, current sessions: 0

subcaches: 32, indexes per subcache: 133

index usage: 0%, cache usage: 0%

total sessions stored since starting: 0

total sessions expired since starting: 0

total (pre-expiry) sessions scrolled out of the cache: 0

total retrieves since starting: 0 hit, 0 miss

total removes since starting: 0 hit, 0 miss

Thanks in advance for any help…

-r~~~~