resolved on trunk, will be in the next release. On 9 December 2010 08:53, Aleksandar Ivanisevic <aleksan...@ivanisevic.de> wrote: > > > Nope, this doesn't work any more, but adding > log4j.logger.org.apache.kahadb.page.PageFile=ERROR to > /opt/activemq/conf/log4j.properties does. Don't know what else it may > silence though. > > "Pothier, Peter" <ppoth...@crossbeamsys.com> > writes: > >> In the startup script, add >> >> -Dorg.apache.activemq.store.kahadb.LOG_SLOW_ACCESS_TIME=0 >> >> to SUNJMX to turn off this logging. >> >> At least this works with 5.3.0. >> >> Peter P >> >> -----Original Message----- >> From: Gary Tully [mailto:gary.tu...@gmail.com] >> Sent: Wednesday, December 08, 2010 10:24 AM >> To: users@activemq.apache.org >> Subject: Re: KahaDB latch wait warnings >> >> In the main, it is not important, that should be at debug or trace >> level logging or removed altogether, it is just an indication of the >> pagefile sync to disk latency and the amount of concurrent writes that >> are pending at the time, an remnant of some performance tuning work >> that was done for 5.4.0. the 100ms limit is arbitrary. >> Do u mind tracking this with a jira issue as it will probably come up again. >> >> On 8 December 2010 13:54, Aleksandar Ivanisevic >> <aleksan...@ivanisevic.de> wrote: >>> >>> >>> Just switched to kahadb on my amq 5.4.1 (fuse) and the log is filling >>> with this: >>> >>> >>> 2010-12-08 14:26:12,668 | WARN | KahaDB PageFile flush: 3 queued writes, >>> latch wait took 119 | org.apache.kahadb.page.PageFile | ActiveMQ Journal >>> Checkpoint Worker >>> 2010-12-08 14:28:03,769 | WARN | KahaDB PageFile flush: 7 queued writes, >>> latch wait took 140 | org.apache.kahadb.page.PageFile | ActiveMQ Journal >>> Checkpoint Worker >>> 2010-12-08 14:28:39,125 | WARN | KahaDB PageFile flush: 3 queued writes, >>> latch wait took 112 | org.apache.kahadb.page.PageFile | ActiveMQ Journal >>> Checkpoint Worker >>> 2010-12-08 14:30:04,928 | WARN | KahaDB PageFile flush: 8 queued writes, >>> latch wait took 109 | org.apache.kahadb.page.PageFile | ActiveMQ Journal >>> Checkpoint Worker >>> 2010-12-08 14:30:28,788 | WARN | KahaDB PageFile flush: 8 queued writes, >>> latch wait took 18839 | org.apache.kahadb.page.PageFile | ActiveMQ Journal >>> Checkpoint Worker >>> >>> quick code search turns out that this warning is fixed to 100ms >>> >>> http://bit.ly/gYH1Zu >>> >>> why 100ms and why is this important? >>> >>> >>> >> >> >> >> -- >> http://blog.garytully.com >> http://fusesource.com >> > > -- > Ti si arogantan, prepotentan i peglaš vlastitu frustraciju. -- Ivan > Tišljar, hr.comp.os.linux > >
-- http://blog.garytully.com http://fusesource.com
