https://bz.apache.org/bugzilla/show_bug.cgi?id=62395
Bug ID: 62395
Summary: After applying 7.0.88 the minSpareThreads setting does
not appear to be implemented
Product: Tomcat 7
Version: 7.0.88
Hardware: Other
OS: AIX
Status: NEW
Severity: normal
Priority: P2
Component: Connectors
Assignee: dev@tomcat.apache.org
Reporter: walsh...@uk.ibm.com
Target Milestone: ---
I've upgraded tomcat from 7.0.82 to 7.0.88.
At 7.0.82 the number of spare threads was set in minSpareThreads was honoured
at startup , since applying 7.0.88 the spare threads has dropped significantly.
example at v 7.0.82
======> Thu 17 May 08:59:00 2018: jazzy01 33226826 thread count: busy: 158
total: 213 max: 350 warnings:
======> Thu 17 May 09:03:54 2018: jazzy01 591054 thread count: busy: 163 total:
212 max: 350 warnings:
======> Thu 17 May 09:08:55 2018: jazzy01 591056 thread count: busy: 140 total:
212 max: 350 warnings:
======> Thu 17 May 09:13:57 2018: jazzy01 30081566 thread count: busy: 170
total: 212 max: 350 warnings:
======> Thu 17 May 09:19:04 2018: jazzy01 34538148 thread count: busy: 188
total: 212 max: 350 warnings:
======> Thu 17 May 09:24:05 2018: jazzy01 34734212 thread count: busy: 181
total: 212 max: 350 warnings:
======> Thu 17 May 09:29:11 2018: jazzy01 36766128 thread count: busy: 163
total: 212 max: 350 warnings:
======> Thu 17 May 09:34:10 2018: jazzy01 8520632 thread count: busy: 150
total: 212 max: 350 warnings:
======> Thu 17 May 09:39:16 2018: jazzy01 46137398 thread count: busy: 156
total: 206 max: 350 warnings:
======> Thu 17 May 09:44:27 2018: jazzy01 38142386 thread count: busy: 176
total: 204 max: 350 warnings:
======> Thu 17 May 09:49:25 2018: jazzy01 27198260 thread count: busy: 185
total: 217 max: 350 warnings:
======> Thu 17 May 09:54:11 2018: jazzy01 50856432 thread count: busy: 181
total: 217 max: 350 warnings:
======> Thu 17 May 09:59:14 2018: jazzy01 23135032 thread count: busy: 205
total: 217 max: 350 warnings:
the same log at 7.0.88
======> Mon 21 May 08:58:54 2018: jazzy01 656636 thread count: busy: 39 total:
51 max: 350 warnings:
======> Mon 21 May 09:03:33 2018: jazzy01 36635102 thread count: busy: 40
total: 43 max: 350 warnings:
======> Mon 21 May 09:08:32 2018: jazzy01 57410200 thread count: busy: 41
total: 52 max: 350 warnings:
======> Mon 21 May 09:13:31 2018: jazzy01 34799714 thread count: busy: 54
total: 61 max: 350 warnings:
======> Mon 21 May 09:18:25 2018: jazzy01 57410220 thread count: busy: 58
total: 63 max: 350 warnings:
======> Mon 21 May 09:23:29 2018: jazzy01 36635076 thread count: busy: 45
total: 70 max: 350 warnings:
======> Mon 21 May 09:28:38 2018: jazzy01 60883512 thread count: busy: 48
total: 52 max: 350 warnings:
======> Mon 21 May 09:33:39 2018: jazzy01 656612 thread count: busy: 35 total:
50 max: 350 warnings:
======> Mon 21 May 09:38:38 2018: jazzy01 19857974 thread count: busy: 36
total: 45 max: 350 warnings:
======> Mon 21 May 09:43:39 2018: jazzy01 19857992 thread count: busy: 42
total: 51 max: 350 warnings:
======> Mon 21 May 09:48:50 2018: jazzy01 54329992 thread count: busy: 36
total: 45 max: 350 warnings:
======> Mon 21 May 09:53:38 2018: jazzy01 27657132 thread count: busy: 39
total: 45 max: 350 warnings:
======> Mon 21 May 09:58:41 2018: jazzy01 27984682 thread count: busy: 38
total: 44 max: 350 warnings:
In both cases I am passing the following:
-Dtomcat.connector.maxThreads=350 -Dtomcat.connector.minThreads=35
Tomcat in this instance is being used as the web server for a Jazz RTC
instance, no changes to the RTC environment were made.
tomcat version 7.0.88
OS = AIX v7.1
Java =
java version "1.6.0"
Java(TM) SE Runtime Environment (build pap6460sr16fp60-20180213_02(SR16
FP60))
IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 AIX ppc64-64
jvmap6460sr16fp60-20180125_377078 (JIT enabled, AOT enabled)
J9VM - 20180125_377078
JIT - r9_20180125_377078
GC - GA24_Java6_SR16_20180125_1132_B377078)
JCL - 20180209_01
I think we're using the coyote connector, I see this in the logs:
20-May-2018 06:37:20 org.apache.coyote.AbstractProtocol init
--
You are receiving this mail because:
You are the assignee for the bug.
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org
For additional commands, e-mail: dev-h...@tomcat.apache.org
