Date: Thu, 16 Sep 2004 12:17:25 +0300 From: Alexey Zelkin <phantom@FreeBSD.org.ua> To: Palle Girgensohn <girgen@pingpong.net> Cc: freebsd-java@freebsd.org Subject: WARNING: -server JVM on recent 5.x/6.x (was: Re: jdk14 & tomcat-5.0, JVM stops and consumes 100% CPU) Message-ID: <20040916091725.GA11080@phantom.cris.net> In-Reply-To: <20603517059D47771C8E39D1@rambutan.pingpong.net> References: <20603517059D47771C8E39D1@rambutan.pingpong.net>
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Gentelmen, Since gcc 3.4 import -server JVM is imfunctionable. It fails very early and very hard to debug. Most likely it is some gcc optiomization related problem. I am working on this now, but very slowly (because of requirement to recompile everything on every change). Conclusion: Do not use -server switch for any java applications while running CURRENT or RELENG_5 now! On Mon, Sep 13, 2004 at 03:05:31PM +0200, Palle Girgensohn wrote: > Hi! > > I have a problem with jdk14 + tomcat, and believe it is the HotSpot Server > VM that fails. > > We're running jdk + tomcat. > > After running for hours or days, suddenly the JVM stop and consumes 100% > CPU cycles. This can go on for a minute, sometimes ten, then its back to > normal. > > All access are routed via apache & mod_jk, and mod_jk's log says: > > [Mon Sep 13 11:38:49 2004] [jk_ajp_common.c (1303)]: ERROR: Client > connection aborted or network problems > > repeatedly when the problem occurs. > > I log apache with %T (service time in seconds) and it reveals that apache > has to wait for the JVM. > > I suspected Garbage collection, but a log of GC (-Xloggc:/tmp/filename) > reveals nothing special. > > top reveals 100% CPU usage for java. I truss:ed a JVM before restarting, > output attached, although it doesn't really make any sense... > > There is no extra load on the machine at the time, it can happen to an > almost idle system. I've seen it happen when the first request after an > idle period happens, and also under normal, pretty constant load. > > Removing `-server' from java's option list seems to also remove the > problem, so I guess there's a bug in the HotSpot Server VM? Any ideas, how > can I help debugging? > > jdk-1.4.2p6_4 > tomcat-5.0.24 > FreeBSD-4.10 > apache+mod_ssl-1.3.31+2.8.18_4 > mod_jk-1.2.5_1,1 > > This happens on several different machines, same setup > > /Palle > ;; This buffer is for notes you don't want to save, and for Lisp evaluation. > ;; If you want to create a file, first visit that file with C-x C-f, > ;; then enter the text in that file's own buffer. > > SIGNAL 27 > gettimeofday(0x281057a8,0x0) = 0 (0x0) > sigprocmask(0x3,0x28105818,0x0) = 0 (0x0) > poll(0x805f000,0x3,0x0) = 0 (0x0) > sigreturn(0x88ab8e0) ERR#185360396 'Unknown error: 185360396' > SIGNAL 27 > SIGNAL 27 > gettimeofday(0x281057a8,0x0) = 0 (0x0) > sigprocmask(0x3,0x28105818,0x0) = 0 (0x0) > poll(0x805f000,0x3,0x0) = 0 (0x0) > sigreturn(0x88ab8e0) ERR#185360396 'Unknown error: 185360396' > SIGNAL 27 > SIGNAL 27 > gettimeofday(0x281057a8,0x0) = 0 (0x0) > sigprocmask(0x3,0x28105818,0x0) = 0 (0x0) > poll(0x805f000,0x3,0x0) = 0 (0x0) > sigreturn(0x88ab8e0) = 17548 (0x448c) > SIGNAL 27 > SIGNAL 27 > gettimeofday(0x281057a8,0x0) = 0 (0x0) > sigprocmask(0x3,0x28105818,0x0) = 0 (0x0) > poll(0x805f000,0x3,0x0) = 0 (0x0) > sigreturn(0x88ab8e0) ERR#185360396 'Unknown error: 185360396' > SIGNAL 27 > SIGNAL 27 > gettimeofday(0x281057a8,0x0) = 0 (0x0) > sigprocmask(0x3,0x28105818,0x0) = 0 (0x0) > poll(0x805f000,0x3,0x0) = 0 (0x0) > gettimeofday(0x88eee44,0x0) = 0 (0x0) > gettimeofday(0x88eeeb4,0x0) = 0 (0x0) > poll(0x88f0400,0x0,0x0) = 0 (0x0) > sigreturn(0x88ab8e0) = 185446412 (0xb0db00c) > SIGNAL 27 > SIGNAL 27 > gettimeofday(0x281057a8,0x0) = 0 (0x0) > sigprocmask(0x3,0x28105818,0x0) = 0 (0x0) > poll(0x805f000,0x3,0x0) = 0 (0x0) > sigreturn(0x88ab8e0) ERR#185360396 'Unknown error: 185360396' > SIGNAL 27 > SIGNAL 27 > gettimeofday(0x281057a8,0x0) = 0 (0x0) > sigprocmask(0x3,0x28105818,0x0) = 0 (0x0) > poll(0x805f000,0x3,0x0) = 0 (0x0) > sigreturn(0x88ab8e0) = 185446412 (0xb0db00c) > SIGNAL 27 > SIGNAL 27 > gettimeofday(0x281057a8,0x0) = 0 (0x0) > sigprocmask(0x3,0x28105818,0x0) = 0 (0x0) > poll(0x805f000,0x3,0x0) = 0 (0x0) > sigreturn(0x88ab8e0) ERR#185360396 'Unknown error: 185360396' > SIGNAL 27 > SIGNAL 27 > gettimeofday(0x281057a8,0x0) = 0 (0x0) > sigprocmask(0x3,0x28105818,0x0) = 0 (0x0) > poll(0x805f000,0x3,0x0) = 0 (0x0) > sigreturn(0x88ab8e0) ERR#185360396 'Unknown error: 185360396' > SIGNAL 27 > SIGNAL 27 > gettimeofday(0x281057a8,0x0) = 0 (0x0) > sigprocmask(0x3,0x28105818,0x0) = 0 (0x0) > poll(0x805f000,0x3,0x0) = 0 (0x0) > sigreturn(0x88ab8e0) ERR#185360396 'Unknown error: 185360396' > SIGNAL 27 > SIGNAL 27 > gettimeofday(0x281057a8,0x0) = 0 (0x0) > sigprocmask(0x3,0x28105818,0x0) = 0 (0x0) > poll(0x805f000,0x3,0x0) = 0 (0x0) > gettimeofday(0x88eee44,0x0) = 0 (0x0) > gettimeofday(0x88eeeb4,0x0) = 0 (0x0) > poll(0x88f0400,0x0,0x0) = 0 (0x0) > sigreturn(0x88ab8e0) ERR#185360396 'Unknown error: 185360396' > SIGNAL 27 > SIGNAL 27 > gettimeofday(0x281057a8,0x0) = 0 (0x0) > sigprocmask(0x3,0x28105818,0x0) = 0 (0x0) > poll(0x805f000,0x3,0x0) = 0 (0x0) > sigreturn(0x88ab8e0) ERR#185360396 'Unknown error: 185360396' > _______________________________________________ > freebsd-java@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-java > To unsubscribe, send any mail to "freebsd-java-unsubscribe@freebsd.org"
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