hi all,
good day to all here.
Currently, my p670 (AIX 5.2 ML7) server is facing the similar problem and really need guidance on how to rectify it . the last comment from mrn, tell us to tune the jfs2 but i do not know the step. The system performance is really bad now. Most of jfs2 is sit at hdisk2 and hdisk6 and both of them are busy 100% every second. From topas output, it shown j2pg is the top process and eating a lot of the cpu%. maybe by tuning task can reduce the j2pg %usage. please and thank you in advance.
Topas Monitor for host: IB_SERVER EVENTS/QUEUES FILE/TTY
Wed Feb 6 11:33:11 2013 Interval: 2 Cswitch 2777 Readch 69.2M
Syscall 105.6K Writech 2548.9K
Kernel 25.4 |######## | Reads 42691 Rawin 90
User 5.8 |## | Writes 7010 Ttyout 28901
Wait 57.5 |################# | Forks 4 Igets 4
Idle 11.2 |#### | Execs 4 Namei 4436
Runqueue 1.5 Dirblk 1126
Network KBPS I-Pack O-Pack KB-In KB-Out Waitqueue 11.5
en0 62.9 318.2 232.9 17.6 45.3
lo0 0.0 0.0 0.0 0.0 0.0 PAGING MEMORY
Faults 1801 Real,MB 32767
Disk Busy% KBPS TPS KB-Read KB-Writ Steals 698 % Comp 26.8
hdisk6 99.8 5063.0 1237.6 463.7 4599.2 PgspIn 0 % Noncomp 74.1
hdisk2 97.8 680.6 161.6 457.7 222.8 PgspOut 0 % Client 72.6
hdisk3 38.1 8487.8 551.1 8.0 8479.8 PageIn 231
hdisk0 35.6 245.7 51.2 0.0 245.7 PageOut 3276 PAGING SPACE
Sios 4446 Size,MB 5120
Name PID CPU% PgSp Owner % Used 4.2
j2pg 282684 14.4 0.6 root NFS (calls/sec) % Free 95.7
uvsrvd 2965570 2.2 1.0 is01 ServerV2 0
uvsh 2396250 2.1 12.5 h151 ClientV2 0 Press:
uvsh 3068018 1.3 1.1 k20 ServerV3 0 "h" for help
uvsh 2302110 1.3 9.0 h245 ClientV3 0 "q" to quit
topas 557106 1.2 7.4 root
shoux
good day to all here.
Currently, my p670 (AIX 5.2 ML7) server is facing the similar problem and really need guidance on how to rectify it . the last comment from mrn, tell us to tune the jfs2 but i do not know the step. The system performance is really bad now. Most of jfs2 is sit at hdisk2 and hdisk6 and both of them are busy 100% every second. From topas output, it shown j2pg is the top process and eating a lot of the cpu%. maybe by tuning task can reduce the j2pg %usage. please and thank you in advance.
Topas Monitor for host: IB_SERVER EVENTS/QUEUES FILE/TTY
Wed Feb 6 11:33:11 2013 Interval: 2 Cswitch 2777 Readch 69.2M
Syscall 105.6K Writech 2548.9K
Kernel 25.4 |######## | Reads 42691 Rawin 90
User 5.8 |## | Writes 7010 Ttyout 28901
Wait 57.5 |################# | Forks 4 Igets 4
Idle 11.2 |#### | Execs 4 Namei 4436
Runqueue 1.5 Dirblk 1126
Network KBPS I-Pack O-Pack KB-In KB-Out Waitqueue 11.5
en0 62.9 318.2 232.9 17.6 45.3
lo0 0.0 0.0 0.0 0.0 0.0 PAGING MEMORY
Faults 1801 Real,MB 32767
Disk Busy% KBPS TPS KB-Read KB-Writ Steals 698 % Comp 26.8
hdisk6 99.8 5063.0 1237.6 463.7 4599.2 PgspIn 0 % Noncomp 74.1
hdisk2 97.8 680.6 161.6 457.7 222.8 PgspOut 0 % Client 72.6
hdisk3 38.1 8487.8 551.1 8.0 8479.8 PageIn 231
hdisk0 35.6 245.7 51.2 0.0 245.7 PageOut 3276 PAGING SPACE
Sios 4446 Size,MB 5120
Name PID CPU% PgSp Owner % Used 4.2
j2pg 282684 14.4 0.6 root NFS (calls/sec) % Free 95.7
uvsrvd 2965570 2.2 1.0 is01 ServerV2 0
uvsh 2396250 2.1 12.5 h151 ClientV2 0 Press:
uvsh 3068018 1.3 1.1 k20 ServerV3 0 "h" for help
uvsh 2302110 1.3 9.0 h245 ClientV3 0 "q" to quit
topas 557106 1.2 7.4 root
shoux
