[solved] Litespeed webserver stops working while cleancache script is runnning

[NiteWave]

the main problem is i/o. average iowait is 22.05, this is very high.

~>date;uptime;iostat
Fri Jun 15 22:47:01 EDT 2012
 22:47:01 up 24 days, 15:32,  1 user,  load average: 1.26, 0.97, 0.87
Linux 2.6.18-338.12.1.el5.lve0.8.34ent (xxxx)    06/15/12

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
          12.92    0.29    4.64   22.05    0.00   60.09

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sda             247.39       867.95        27.06 1848352732   57620252
sda1              0.00         0.05         0.01     106678      11988
sda2             37.17       136.88       527.71  291502237 1123779840
sda3              9.93       171.04       105.91  364241245  225538992
sda4              0.00         0.00         0.00          6          0
sda5              1.47        21.51        20.47   45811450   43586016
sda6              0.00         0.00         0.00       2351       1688
sda7             10.13        10.10       530.31   21511492 1129316048
sda8            188.68       528.36       859.50 1125171313 1830352976