From: Kumar, Dinesh M (MED) (Dinesh.Kumar@geind.ge.com)
Date: Wed Aug 11 2004 - 11:42:26 EDT
Team,
My clearcase VOB server performance is poor during clearcase multisite
import.
(i.e.. An extensive database operation added with with lots of small file
handling).
All that I have is 6GB of clearcase database and my system spent lots of time
on kernel (top) or sy (vmstat) where I can see
lots of free memory with hardly any IOWAIT.
Find below output from top/vmstat and my shared memory setting.
Am I missing any tuning on File caching / Shared memory..?
Please advise.
I shall summarize.
Dinesh
>
>
>
> Top output
>
> load averages: 1.21, 1.20, 1.11
20:23:29
> 254 processes: 252 sleeping, 2 on cpu
> CPU states: 70.6% idle, 1.7% user, 26.8% kernel, 0.9% iowait, 0.0% swap
> Memory: 16G real, 13G free, 20G swap free
>
> PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND
> 18814 root 4 60 0 5832K 4608K cpu3 32:47 23.52% db_server
> 22603 root 4 53 0 5864K 4624K sleep 0:15 1.93% db_server
> 16044 cisadm 4 58 0 9272K 5664K sleep 0:32 0.65% vobrpc_server
> 19526 root 1 58 0 13M 7408K sleep 1:23 0.43% multitool
> 24766 root 1 59 -5 7400K 3936K sleep 6:07 0.27% LMfile
> 23713 root 1 58 0 2440K 1944K cpu2 0:00 0.12% top
> 23700 priteshp 4 58 0 8920K 5024K sleep 0:01 0.11% view_server
> 23704 cisadm 1 48 0 7584K 3912K sleep 0:00 0.01% ccfs_server
> 22487 root 4 58 0 5744K 4504K sleep 0:00 0.01% db_server
> 1347 srinivs 4 58 0 9624K 4960K sleep 2:30 0.01% view_server
> 23211 cisadm 4 58 0 9224K 5752K sleep 0:02 0.01% vobrpc_server
> 24806 root 1 59 -5 7496K 2920K sleep 45:44 0.00% LMfile
> 3096 cisadm 4 58 0 9336K 5712K sleep 4:02 0.00% vobrpc_server
> 21262 root 1 59 -5 7456K 4008K sleep 3:22 0.00% LMfile
> 19522 cisadm 1 60 0 3832K 3136K sleep 0:03 0.00% vob_server
>
> vmstat -S
>
> procs memory page disk faults cpu
> r b w swap free si so pi po fr de sr s0 s1 s3 s3 in sy cs us sy
id
> 0 0 0 33605600 14503448 0 0 1106 6 6 0 0 4 0 0 15 1049 1351 490 1 4
95
> 0 0 0 33428952 13773240 0 0 0 0 0 0 0 1 0 0 170 1084 16584 4028 2 26
71
> 0 0 0 33428952 13772744 0 0 0 0 0 0 0 15 0 0 191 1252 16961 4347 2 27
72
> 0 0 0 33428952 13772536 0 0 25 0 0 0 0 2 0 0 180 1095 16390 4094 3 27
70
> 0 0 0 33428952 13772456 0 0 0 4 4 0 0 2 0 0 178 1745 23962 6567 3 29
68
> 0 0 0 33430840 13773760 0 0 0 0 0 0 0 1 0 0 171 1111 16578 4358 2 26
72
> 0 0 0 33431312 13774024 0 0 0 0 0 0 0 1 0 0 176 1275 18737 4626 2 27
71
> 0 0 0 33431312 13774048 0 0 0 0 0 0 0 1 0 0 179 1204 17490 4401 2 27
70
> 0 0 0 33431312 13774040 0 0 0 0 0 0 0 3 0 0 186 1164 16717 4122 2 26
71
> 0 0 0 33431312 13826288 0 0 0 0 0 0 0 0 0 0 514 1737 33477 7286 3 24
72
>
>
> Shared memory setting:
> -----------------------------------
> ##Alter shared memory
> set shmsys:shminfo_shmmin = 1
> set shmsys:shminfo_shmmax = 268435456
> set shmsys:shminfo_shmseg = 6
> set shmsys:shminfo_shmmni = 256
> set semsys:seminfo_semmap = 35
> set semsys:seminfo_semmni = 100
> set semsys:seminfo_semmns = 300
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