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Posted to users@tomcat.apache.org by "Martin, Brian" <BM...@AlamoLocal.com> on 2001/05/09 15:46:06 UTC
tomcat thread hogs CPU - is this a bug ?
I am running tomcat 3.2 on an dual cpu HPUX-11.0 box,
using IIS on the front end on an NT box.
when I look at the thread list (using glance) for the tomcat process,
i can see 42 threads, but only one of them is showing high cpu usage
in this screen shot, it is thread id 8168.
why are there so many threads at 0 % ?
is anyony else running tomcat on hpux ? if yes, can you email me your
screen captures showing performance related stuff. I am trying to figure
out whether or not some of the things that i am looking at are 'normal'
or just my system.
is there a way to tell what each thread is doing ?
Thread List PID: 2805, java PPID: 2803 euid: 101 User:
weblogic
CPU Util CPU Tm Phys Logl
Block
TID ( 200% max) Cum IO Rate IO Rate Scheduler Pri On
----------------------------------------------------------------------------
8150 0.0/ 0.0 1.8 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8167 0.0/ 0.0 0.0 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8168 46.8/ 6.5 3950.7 0.0/ 0.0 0.0/ 0.0 HPUX 239
PRI
8169 0.0/ 0.0 1.0 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8170 0.0/ 0.0 1.5 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8171 0.2/ 0.1 79.6 0.0/ 0.0 0.0/ 0.0 HPUX 168
SLEEP
8172 0.0/ 0.0 0.0 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8173 0.7/ 0.1 33.5 0.0/ 0.0 8.1/ 0.8 HPUX 154
SYSTM
8174 0.0/ 0.0 3.6 0.0/ 0.0 0.0/ 0.0 HPUX 168
SLEEP
8175 0.0/ 0.0 11.2 0.0/ 0.0 0.0/ 10.9 HPUX 154
SYSTM
8176 0.0/ 0.0 4.3 0.0/ 0.0 0.0/ 4.1 HPUX 154
SYSTM
8177 4.8/ 0.1 57.8 0.0/ 0.0 3564.2/ 56.9 HPUX 192
PRI
8178 0.0/ 0.2 108.1 0.0/ 0.0 0.0/ 103.3 HPUX 154
SYSTM
8179 0.0/ 0.0 16.0 0.0/ 0.0 0.0/ 15.6 HPUX 154
SYSTM
8180 7.6/ 0.3 186.5 0.0/ 0.0 5402.8/ 188.7 HPUX 192
PRI
8181 4.0/ 0.1 47.5 0.0/ 0.0 2815.3/ 49.6 HPUX 154
STRMS
8182 0.0/ 0.3 155.4 0.0/ 0.0 0.0/ 159.6 HPUX 154
SYSTM
8183 4.7/ 0.3 164.6 0.0/ 0.0 2677.0/ 169.5 HPUX 154
SYSTM
8184 4.7/ 0.3 207.6 0.0/ 0.0 2556.4/ 209.6 HPUX 193
PRI
8185 0.0/ 0.0 0.2 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8190 0.0/ 0.0 0.3 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8191 0.0/ 0.0 3.9 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8192 0.0/ 0.0 0.0 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8193 0.0/ 0.0 4.1 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8194 0.0/ 0.0 0.2 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8195 0.2/ 0.1 50.7 0.0/ 0.0 0.0/ 0.0 HPUX 154
SLEEP
8196 0.0/ 0.0 0.3 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8197 0.0/ 0.0 4.6 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
29571 0.0/ 0.1 7.2 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8546 0.0/ 0.0 0.0 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8547 0.0/ 0.0 0.0 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8548 0.0/ 0.0 0.0 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8549 0.0/ 0.0 0.0 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8550 0.0/ 0.0 0.0 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8551 0.0/ 0.0 0.0 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8552 0.0/ 0.0 0.0 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
8553 0.0/ 0.0 0.0 0.0/ 0.0 0.0/ 0.0 HPUX 154
SYSTM
Brian Martin
Unix Administrator
Alamo, Local Market Division
(440) 715-3549