What type of GC is it running? What are your JVM settings?
"This e-mail is from Reed Exhibitions (Gateway House, 28 The Quadrant, Richmond, Surrey, TW9 1DN, United Kingdom), a division of Reed Business, Registered in England, Number 678540. It contains information which is confidential and may also be privileged. It is for the exclusive use of the intended recipient(s). If you are not the intended recipient(s) please note that any form of distribution, copying or use of this communication or the information in it is strictly prohibited and may be unlawful. If you have received this communication in error please return it to the sender or call our switchboard on +44 (0) 20 89107910. The opinions expressed within this communication are not necessarily those expressed by Reed Exhibitions." Visit our website at http://www.reedexpo.com -----Original Message----- From: Terry Ford To: CF-Server Sent: Thu Nov 09 21:11:11 2006 Subject: Server pauses... thoughts? We are running CFMX 6.1 on linux RHEL4. Approximately once every 8-12 hours or so our server stops responding for about 3 minutes. Symptoms: CF stops processing requests, stops queueing, stops timing out requests, stops doing everything. We are using Jrockit 1.4.2 right now, but it also happens under Sun's JVM too. cfstat 1: 0 11 0 23 -1 -1 127 15 1 137 247 0 0 0 0 11 0 23 -1 -1 127 15 1 137 247 0 0 0 0 11 0 23 -1 -1 127 15 1 137 247 0 0 0 0 11 0 23 -1 -1 127 15 1 137 247 0 0 0 0 11 0 23 -1 -1 127 15 1 137 247 0 0 0 .... etc.. for 3 minutes. Then it jumps back to life again, taking off as if nothing ever happened. I thought perhaps it was a problem with garbage collection, but Jrockit's GC debugging looks fine. In fact, it continues to garbage collect during that 3 minutes, just as it did before the freeze: [gcpause][Thu Nov 9 16:00:07 2006][13912] old collection phase 0-2 pause time: 7.998000 ms, (start time: 21226.183 s) [gcpause][Thu Nov 9 16:00:07 2006][13912] total mark time: 530.209 ms [gcpause][Thu Nov 9 16:00:07 2006][13912] total sweep time: 5.027 ms [gcpause][Thu Nov 9 16:00:07 2006][13912] old collection phase 4-0 pause time: 27.229000 ms, (start time: 21226.692 s) [gcpause][Thu Nov 9 16:00:07 2006][13912] (pause includes compaction: 0.000 ms (no compaction), update ref: 0.000 ms) [gcpause][Thu Nov 9 16:01:07 2006][13912] old collection phase 0-2 pause time: 10.371000 ms, (start time: 21286.774 s) [gcpause][Thu Nov 9 16:01:08 2006][13912] total mark time: 452.252 ms [gcpause][Thu Nov 9 16:01:08 2006][13912] total sweep time: 39.125 ms [gcpause][Thu Nov 9 16:01:08 2006][13912] old collection phase 4-0 pause time: 62.351000 ms, (start time: 21287.204 s) [gcpause][Thu Nov 9 16:01:08 2006][13912] (pause includes compaction: 30.253 ms (external), update ref: 4.000 ms) [gcpause][Thu Nov 9 16:02:08 2006][13912] old collection phase 0-2 pause time: 15.459000 ms, (start time: 21347.301 s) [gcpause][Thu Nov 9 16:02:09 2006][13912] total mark time: 581.907 ms [gcpause][Thu Nov 9 16:02:09 2006][13912] total sweep time: 147.318 ms [gcpause][Thu Nov 9 16:02:09 2006][13912] old collection phase 4-0 pause time: 181.771000 ms, (start time: 21347.849 s) [gcpause][Thu Nov 9 16:02:09 2006][13912] (pause includes compaction: 131.157 ms (internal), update ref: 16.001 ms) [gcpause][Thu Nov 9 16:03:09 2006][13912] old collection phase 0-2 pause time: 16.870000 ms, (start time: 21408.057 s) So the JVM appears to be fine. The problem is not with the database -- there are no outstanding queries when this occurs. The network connection is fine. The disk is fine. There's a ton of memory. There's no paging going on. So... does anyone have any idea what might be causing these infrequent yet long pauses? Regards, Terry ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Introducing the Fusion Authority Quarterly Update. 80 pages of hard-hitting, up-to-date ColdFusion information by your peers, delivered to your door four times a year. http://www.fusionauthority.com/quarterly Archive: http://www.houseoffusion.com/groups/CF-Server/message.cfm/messageid:6157 Subscription: http://www.houseoffusion.com/groups/CF-Server/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.10
