[Xymon] pure performance for showing graphs

[martin.flemming at desy.de]

Hi !

since some weeks,
i've got a really poor performance,
when i want to see graphs on the test-page or in trend-page ..

I'm running xymon-4.3.7 ...

It's still need 4-8 seconds or more to generate these graphs
and the top-output shows till 6 showgraph.cgi-processes with a huge CPU-usage

top - 14:01:20 up 143 days, 22:53,  7 users,  load average: 2.05, 1.34, 
0.69
Tasks: 320 total,   7 running, 312 sleeping,   1 stopped,   0 zombie
Cpu(s):  1.6%us,  0.7%sy,  0.1%ni, 96.9%id,  0.7%wa,  0.0%hi,  0.1%si, 
0.0%st
Mem:  24942104k total,  6083748k used, 18858356k free,   431604k buffers
Swap:        0k total,        0k used,        0k free,  3084868k cached

   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
14418 apache    25   0  258m 249m 1180 R 99.4  1.0   0:04.24 showgraph.cgi
14421 apache    18   0  214m 205m 1180 R 99.4  0.8   0:03.54 showgraph.cgi
14419 apache    24   0  219m 210m 1180 R 97.5  0.9   0:03.56 showgraph.cgi
14420 apache    23   0  215m 207m 1184 R 97.5  0.9   0:03.54 showgraph.cgi
14422 apache    25   0  218m 209m 1180 R 97.5  0.9   0:03.53 showgraph.cgi
14417 apache    25   0  260m 250m 1184 R 95.5  1.0   0:04.26 showgraph.cgi
12951 apache    15   0 40836  26m 4044 S 13.6  0.1   0:20.67 httpd
25758 apache    15   0 59840  45m 4004 S 13.6  0.2   0:18.81 httpd
11365 apache    15   0 42316  27m 4004 S 11.7  0.1   0:20.78 httpd

Has somebody an idea what's hanging in the system
or how i could analyse this poor performence-problem ?



Cheers,

        Martin