[ntp:questions] Time reset

Venu Gopal neo.venu at gmail.com
Thu Mar 6 06:07:18 UTC 2008


neo.venu at gmail.com (Venu Gopal) wrote in 
news:875dfa3d0803050226r16a94674k40c01387b90ebb5 at mail.gmail.com:

> Hi,
> 
> I need to experiment a bit to give some stats on CPU load
> and DISK I/O when crond tasks are run.
> 
> Venu

Hi all,

To measure the CPU load and DISK I/O I've used "iostat"
while running the crons weekly tasks of updatring the
"whatis" database. Below is the slice of the log :

--------------------------------------------------------

avg-cpu:  %user   %nice    %sys   %idle
          77.00    0.00   16.00    7.00

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
dev3-0          132.50      1032.00        68.00       2064        136

avg-cpu:  %user   %nice    %sys   %idle
          91.00    0.00    4.50    4.50

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
dev3-0           50.50       296.00      2492.00        592       4984

avg-cpu:  %user   %nice    %sys   %idle
          82.00    0.00    2.00   16.00

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
dev3-0           43.50       420.00         0.00        840          0

avg-cpu:  %user   %nice    %sys   %idle
          99.00    0.00    1.00    0.00

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
dev3-0            1.00         4.00         4.00          8          8

avg-cpu:  %user   %nice    %sys   %idle
          98.00    0.00    2.00    0.00

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
dev3-0           22.00         0.00      2412.00          0       4824

avg-cpu:  %user   %nice    %sys   %idle
          97.50    0.00    2.50    0.00

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
dev3-0            1.00         0.00         8.00          0         16

avg-cpu:  %user   %nice    %sys   %idle
          98.50    0.00    1.50    0.00

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
dev3-0           59.50         0.00      3340.00          0       6680

avg-cpu:  %user   %nice    %sys   %idle
          98.00    0.00    2.00    0.00

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
dev3-0            1.00         0.00         8.00          0         16

avg-cpu:  %user   %nice    %sys   %idle
          14.00    0.00    1.00   85.00

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
dev3-0            4.00        36.00         8.00         72         16

--------------------------------------------------------

Its clear that CPU is heavily loaded which might be 
leading to loss of ticks. Yet to check the DMA status for
IDE DISK. I'll be out for about a week, after returning I'll
give few more stats based on combination of CPU load, Disk I/O
and Network I/O.

Venu




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