[Dev-flock] slow server due to trac?

[Lucy Mendel]

server seems pretty slow, at least from ssh. gets slow (1s avg
latency), but then become completely responsive. now the lag is back.
wondering why. trac? trac.fcgi's CPU toggles between 0 and 26% every
second it seems.
what's our trac restart procedure?
i restarted apache2. lag is still present. maybe it's network. anyone
noticing problems with responsiveness?

 PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
1621 www-data  20   0  165m 114m 4596 S  0.0 32.9  26:54.74 trac.fcgi
1622 www-data  20   0 84948  39m 3052 S  0.0 11.3   0:26.86 dispatch.fcgi
1620 www-data  20   0 83812  36m 2884 S  0.0 10.5   0:25.50 dispatch.fcgi
1590 tomcat55  20   0  318m  32m 4452 S  0.0  9.2   0:11.78 java
1319 mysql     20   0  124m  26m 4168 S  0.0  7.5   0:07.03 mysqld
24609 www-data  20   0 26300  10m 5504 S  0.0  2.9   0:09.68 apache2
20132 www-data  20   0 26440  10m 5368 S  0.0  2.9   0:10.22 apache2
32619 www-data  20   0 26336 9.8m 5136 S  0.0  2.8   0:03.20 apache2
27738 www-data  20   0 25620 9564 5332 S  0.0  2.7   0:05.98 apache2
32538 www-data  20   0 25296 9036 5152 S  0.0  2.5   0:02.53 apache2
1609 root      20   0 24288 6988 4704 S  0.0  2.0   0:00.11 apache2
1619 www-data  20   0 15604 3544 1968 S  0.0  1.0   0:00.01 php5-cgi
7875 root      20   0  5036 2336 1968 S  0.0  0.7   0:00.00 ipop3d
7463 root      20   0  5036 2296 1928 S  0.0  0.6   0:00.01 ipop3d
7407 root      20   0  5036 2180 1820 S  0.0  0.6   0:00.00 ipop3d
1736 postfix   20   0  4868 2052 1700 S  0.0  0.6   0:00.01 tlsmgr
1632 www-data  20   0 15604 1968  388 S  0.0  0.6   0:00.00 php5-cgi
6639 root      20   0 14984 1900 1528 S  0.0  0.5   0:00.01 sshd
6670 root      20   0  3260 1888 1228 S  0.0  0.5   0:00.01 bash
6643 lucy      20   0  3260 1860 1200 S  0.0  0.5   0:00.01 bash
1574 tomcat55  20   0  7660 1748 1364 S  0.0  0.5   0:00.01 rotatelogs

after restart

Tasks:  60 total,   1 running,  59 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:    356116k total,   160304k used,   195812k free,     8840k buffers
Swap:   262136k total,     1792k used,   260344k free,    59836k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1590 tomcat55  20   0  318m  32m 4452 S  0.0  9.2   0:11.83 java
 1319 mysql     20   0  124m  26m 4168 S  0.0  7.5   0:07.03 mysqld
 7953 root      20   0 24288 9256 5340 S  0.0  2.6   0:00.17 apache2
 7958 www-data  20   0 10868 8452 2316 S  0.0  2.4   0:00.19 trac.fcgi
 7972 www-data  20   0 24288 4896  968 S  0.0  1.4   0:00.00 apache2
 7956 www-data  20   0 15604 4792 3216 S  0.0  1.3   0:00.01 php5-cgi
 7957 www-data  20   0 47848 4520 2096 S  0.0  1.3   0:00.06 dispatch.fcgi
 7959 www-data  20   0 47608 4432 2096 S  0.0  1.2   0:00.07 dispatch.fcgi
 7955 www-data  20   0 19476 2684  604 S  0.0  0.8   0:00.01 apache2
 7875 donate    20   0  5200 2644 2240 S  0.0  0.7   0:00.00 ipop3d
 7463 root      20   0  5036 2296 1928 S  0.0  0.6   0:00.01 ipop3d
 7407 root      20   0  5036 2180 1820 S  0.0  0.6   0:00.00 ipop3d
 1736 postfix   20   0  4868 2052 1700 S  0.0  0.6   0:00.01 tlsmgr
 7961 www-data  20   0 15604 2052  472 S  0.0  0.6   0:00.00 php5-cgi
 6639 root      20   0 14984 1900 1528 S  0.0  0.5   0:00.01 sshd
 6670 root      20   0  3260 1892 1232 S  0.0  0.5   0:00.01 bash
 6643 lucy      20   0  3260 1860 1200 S  0.0  0.5   0:00.01 bash