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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=25491 Tomcat spawns open PIPEs whenever compiling a page with JVM forking turned on Summary: Tomcat spawns open PIPEs whenever compiling a page with JVM forking turned on Product: Tomcat 4 Version: 4.1.29 Platform: Sun OS/Version: Solaris Status: NEW Severity: Critical Priority: Other Component: Jasper 2 AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] Im am currently running Tomcat 4.1.29 with Java version 1.4.0_02-b02 on a Sun E450 with 4gbs of RAM with quad 400mhz Sparc cpus. I downloaded the binary distribution for testing, and discovered that whenever Tomcat compiles a jsp page, the jasper2 opens a pipe for the compile whether it is javac or jikes, and does not release them. Under a heavy jsp compilation these PIPES would eventually take up all the file descriptors and the tomcat would be render out of memory. This happens when we enable JVM forking in the web.xml config. I am running the settings below and was able to replicate this error on all my Solaris 9 servers. 29472: /opt/j2se/usr/j2se/bin/java -server -Xms256m -Xmx256m - XX:PermSize=128m -XX:New argv[0]: /opt/j2se/usr/j2se/bin/java argv[1]: -server argv[2]: -Xms256m argv[3]: -Xmx256m argv[4]: -XX:PermSize=128m argv[5]: -XX:NewSize=128m argv[6]: -XX:SurvivorRatio=2000 argv[7]: -XX:+UseParNewGC argv[8]: -XX:+UseConcMarkSweepGC argv[9]: -XX:MaxTenuringThreshold=0 argv[10]: -Xloggc:/opt/tomcat/logs/gc.log argv[11]: -XX:+PrintGCDetails argv[12]: -XX:+PrintGCTimeStamps argv[13]: -Dbuild.compiler.emacs=true argv[14]: -Djava.endorsed.dirs=/opt/jakarta-tomcat-4.1.29/common/endorsed argv[15]: -classpath argv[16]: /opt/j2se/usr/j2se/lib/tools.jar:/opt/jakarta-tomcat- 4.1.29/bin/bootstrap.jar argv[17]: -Dcatalina.base=/opt/jakarta-tomcat-4.1.29 argv[18]: -Dcatalina.home=/opt/jakarta-tomcat-4.1.29 argv[19]: -Djava.io.tmpdir=/opt/jakarta-tomcat-4.1.29/temp argv[20]: org.apache.catalina.startup.Bootstrap argv[21]: start A lsof of the tomcat process shows the PIPES being formed. # lsof -p 29472 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME java 29472 tomcat cwd VDIR 85,90 512 488618 /opt/jakarta- tomcat-4.1.29/bin java 29472 tomcat txt VREG 85,90 38468 359689 /opt/j2se/usr/j2se/bin/java java 29472 tomcat txt VREG 85,90 753709 624919 /opt/jakarta- tomcat-4.1.29/server/lib/catalina.jar java 29472 tomcat txt VREG 85,90 736810 624950 /opt/jakarta- tomcat-4.1.29/common/lib/ant.jar java 29472 tomcat txt VREG 85,90 5092912 410527 /opt/j2se/usr/j2se/lib/tools.jar java 29472 tomcat txt VREG 85,90 498051 624768 /opt/jakarta- tomcat-4.1.29/server/webapps/admin/WEB-INF/lib/struts.jar java 29472 tomcat txt VREG 85,90 769335 546205 /opt/j2se/usr/j2se/jre/lib/ext/localedata.jar java 29472 tomcat txt VREG 85,90 498051 624963 /opt (/dev/md/dsk/d90) java 29472 tomcat txt VREG 85,90 58904 566568 /opt/j2se/usr/j2se/jre/lib/sparc/libnet.so java 29472 tomcat txt VREG 85,90 65508 624932 /opt/jakarta- tomcat-4.1.29/server/lib/tomcat-jk.jar java 29472 tomcat txt VREG 85,90 22379 624930 /opt/jakarta- tomcat-4.1.29/server/lib/commons-fileupload-1.0.jar java 29472 tomcat txt VREG 85,90 97076 624929 /opt/jakarta- tomcat-4.1.29/server/lib/tomcat-jk2.jar java 29472 tomcat txt VREG 85,90 23336 624926 /opt/jakarta- tomcat-4.1.29/server/lib/tomcat-warp.jar java 29472 tomcat txt VREG 85,90 21435 624925 /opt/jakarta- tomcat-4.1.29/server/lib/servlets-webdav.jar java 29472 tomcat txt VREG 85,90 7031 624924 /opt/jakarta- tomcat-4.1.29/server/lib/servlets-common.jar java 29472 tomcat txt VREG 85,90 104195 624922 /opt/jakarta- tomcat-4.1.29/server/lib/jaas.jar java 29472 tomcat txt VREG 85,90 66846 624921 /opt/jakarta- tomcat-4.1.29/server/lib/tomcat-coyote.jar java 29472 tomcat txt VREG 85,90 118726 624920 /opt/jakarta- tomcat-4.1.29/server/lib/commons-beanutils.jar java 29472 tomcat txt VREG 85,90 186651 624918 /opt/jakarta- tomcat-4.1.29/server/lib/tomcat-util.jar java 29472 tomcat txt VREG 85,90 109670 624914 /opt/jakarta- tomcat-4.1.29/server/lib/commons-modeler.jar java 29472 tomcat txt VREG 85,90 47714 624916 /opt/jakarta- tomcat-4.1.29/server/lib/tomcat-http11.jar java 29472 tomcat txt VREG 85,90 343900 624907 /opt/jakarta- tomcat-4.1.29/server/lib/mx4j-jmx.jar java 29472 tomcat txt VREG 85,90 14804 624927 /opt/jakarta- tomcat-4.1.29/server/lib/catalina-ant.jar java 29472 tomcat txt VREG 85,90 19278 624915 /opt/jakarta- tomcat-4.1.29/server/lib/servlets-default.jar java 29472 tomcat txt VREG 85,90 18929 624913 /opt/jakarta- tomcat-4.1.29/server/lib/servlets-manager.jar java 29472 tomcat txt VREG 85,90 25429 624911 /opt/jakarta- tomcat-4.1.29/server/lib/jakarta-regexp-1.3.jar java 29472 tomcat txt VREG 85,90 109096 624909 /opt/jakarta- tomcat-4.1.29/server/lib/commons-digester.jar java 29472 tomcat txt VREG 85,90 31605 624908 /opt/jakarta- tomcat-4.1.29/server/lib/commons-logging.jar java 29472 tomcat txt VREG 85,90 8674 624951 /opt/jakarta- tomcat-4.1.29/common/lib/jta.jar java 29472 tomcat txt VREG 85,90 28520 624949 /opt/jakarta- tomcat-4.1.29/common/lib/naming-common.jar java 29472 tomcat txt VREG 85,90 38836 624948 /opt/jakarta- tomcat-4.1.29/common/lib/naming-resources.jar java 29472 tomcat txt VREG 85,90 5604126 546194 /opt/j2se/usr/j2se/jre/lib/charsets.jar java 29472 tomcat txt VREG 85,90 5964 624912 /opt/jakarta- tomcat-4.1.29/server/lib/servlets-invoker.jar java 29472 tomcat txt VREG 85,90 72933 624947 /opt/jakarta- tomcat-4.1.29/common/lib/jasper-runtime.jar java 29472 tomcat txt VREG 85,90 45386 624946 /opt/jakarta- tomcat-4.1.29/common/lib/activation.jar java 29472 tomcat txt VREG 85,90 100776 624945 /opt/jakarta- tomcat-4.1.29/common/lib/commons-dbcp-1.1.jar java 29472 tomcat txt VREG 85,90 183104 624942 /opt/jakarta- tomcat-4.1.29/common/lib/jasper-compiler.jar java 29472 tomcat txt VREG 85,90 98496 624944 /opt/jakarta- tomcat-4.1.29/common/lib/jndi.jar java 29472 tomcat txt VREG 85,90 6727 624940 /opt/jakarta- tomcat-4.1.29/common/lib/jdbc2_0-stdext.jar java 29472 tomcat txt VREG 85,90 165119 624939 /opt/jakarta- tomcat-4.1.29/common/lib/commons-collections.jar java 29472 tomcat txt VREG 85,90 22327 624938 /opt/jakarta- tomcat-4.1.29/common/lib/commons-logging-api.jar java 29472 tomcat txt VREG 85,90 280984 624937 /opt/jakarta- tomcat-4.1.29/common/lib/mail.jar java 29472 tomcat txt VREG 85,90 79265 624936 /opt/jakarta- tomcat-4.1.29/common/lib/servlet.jar java 29472 tomcat txt VREG 85,90 26811340 546256 /opt/j2se/usr/j2se/jre/lib/rt.jar java 29472 tomcat txt VREG 85,90 18245 624943 /opt/jakarta- tomcat-4.1.29/common/lib/naming-factory.jar java 29472 tomcat txt VREG 85,90 895647 546249 /opt/j2se/usr/j2se/jre/lib/jsse.jar java 29472 tomcat txt VREG 85,90 39523 624941 /opt/jakarta- tomcat-4.1.29/common/lib/commons-pool-1.1.jar java 29472 tomcat txt VREG 85,90 927669 624953 /opt/jakarta- tomcat-4.1.29/common/endorsed/xercesImpl.jar java 29472 tomcat txt VREG 85,90 24694 488630 /opt/jakarta- tomcat-4.1.29/bin/bootstrap.jar java 29472 tomcat txt VREG 85,90 111374 546206 /opt/j2se/usr/j2se/jre/lib/ext/sunjce_provider.jar java 29472 tomcat txt VREG 85,90 69596 546248 /opt/j2se/usr/j2se/jre/lib/jce.jar java 29472 tomcat txt VREG 85,90 89343 546257 /opt/j2se/usr/j2se/jre/lib/sunrsasign.jar java 29472 tomcat txt VREG 85,90 123705 624954 /opt/jakarta- tomcat-4.1.29/common/endorsed/xmlParserAPIs.jar java 29472 tomcat txt VREG 85,90 73032 566574 /opt/j2se/usr/j2se/jre/lib/sparc/libzip.so java 29472 tomcat txt VREG 85,90 146524 566553 /opt/j2se/usr/j2se/jre/lib/sparc/libjava.so java 29472 tomcat txt VREG 85,90 96452 566572 /opt/j2se/usr/j2se/jre/lib/sparc/libverify.so java 29472 tomcat txt VREG 85,90 9550 488629 /opt/jakarta- tomcat-4.1.29/bin/commons-daemon.jar java 29472 tomcat txt VREG 0,2 16384 3153301845 /tmp (swap) java 29472 tomcat txt VREG 85,90 44620 593603 /opt/j2se/usr/j2se/jre/lib/sparc/native_threads/libhpi.so java 29472 tomcat txt VREG 85,30 11452 136329 /usr/platform/sun4u/lib/libmd5_psr.so.1 java 29472 tomcat txt VREG 85,30 11448 104659 /usr/lib/libmd5.so.1 java 29472 tomcat txt VREG 85,30 43960 104623 /usr/lib/libaio.so.1 java 29472 tomcat txt VREG 85,30 35916 104678 /usr/lib/librt.so.1 java 29472 tomcat txt VREG 85,30 21676 104662 /usr/lib/libmp.so.2 java 29472 tomcat txt VREG 85,30 11580 104681 /usr/lib/libsched.so.1 java 29472 tomcat txt VREG 85,30 742660 105122 /usr/lib/libnsl.so.1 java 29472 tomcat txt VREG 85,90 53247 546204 /opt/j2se/usr/j2se/jre/lib/ext/ldapsec.jar java 29472 tomcat txt VREG 85,30 110116 104728 /usr/lib/libm.so.1 java 29472 tomcat txt VREG 85,90 7434928 593607 /opt/j2se/usr/j2se/jre/lib/sparc/server/libjvm.so java 29472 tomcat txt VREG 85,90 8896 546203 /opt/j2se/usr/j2se/jre/lib/ext/dnsns.jar java 29472 tomcat txt VREG 85,30 58504 104686 /usr/lib/libsocket.so.1 java 29472 tomcat txt VREG 85,30 58780 104719 /usr/lib/libCrun.so.1 java 29472 tomcat txt VREG 85,30 6476 104693 /usr/lib/libw.so.1 java 29472 tomcat txt VREG 85,30 855484 104626 /usr/lib/libc.so.1 java 29472 tomcat txt VREG 85,30 16768 136328 /usr/platform/sun4u/lib/libc_psr.so.1 java 29472 tomcat txt VREG 85,30 138560 104689 /usr/lib/libthread.so.1 java 29472 tomcat txt VREG 85,30 3984 104616 /usr/lib/libdl.so.1 java 29472 tomcat txt VREG 85,30 192692 105127 /usr/lib/ld.so.1 java 29472 tomcat 0r VCHR 13,2 0t0 318874 /devices/pseudo/[EMAIL PROTECTED]:null java 29472 tomcat 1w VREG 85,90 31060 624972 /opt/jakarta- tomcat-4.1.29/logs/catalina.out java 29472 tomcat 2w VREG 85,90 31060 624972 /opt/jakarta- tomcat-4.1.29/logs/catalina.out java 29472 tomcat 3u VCHR 13,12 0t0 318876 /devices/pseudo/[EMAIL PROTECTED]:zero java 29472 tomcat 4w VREG 85,90 0 31764 /opt/tomcat/logs/gc.log java 29472 tomcat 5r DOOR 234,0 0t0 43118 /var/run (swap) (door to nscd[210]) java 29472 tomcat 6u IPv4 0x3001f5be1e8 0t0 TCP *:9080 (LISTEN) java 29472 tomcat 7u IPv4 0x305df9ba060 0t0 TCP localhost:64965->localhost:64964 (BOUND) java 29472 tomcat 8r VREG 85,90 778 624960 /opt/jakarta- tomcat-4.1.29/conf/jk2.properties java 29472 tomcat 9w VREG 85,90 30964 624979 /opt/jakarta- tomcat-4.1.29/logs/localhost_log.2003-12-12.txt java 29472 tomcat 10w VREG 85,90 450 624983 /opt/jakarta- tomcat-4.1.29/logs/catalina_log.2003-12-12.txt java 29472 tomcat 11w VREG 85,90 6552 624981 /opt/jakarta- tomcat-4.1.29/logs/localhost_admin_log.2003-12-12.txt java 29472 tomcat 12r VREG 85,90 111374 546206 /opt/j2se/usr/j2se/jre/lib/ext/sunjce_provider.jar java 29472 tomcat 13r VREG 85,90 769335 546205 /opt/j2se/usr/j2se/jre/lib/ext/localedata.jar java 29472 tomcat 14r VREG 85,90 53247 546204 /opt/j2se/usr/j2se/jre/lib/ext/ldapsec.jar java 29472 tomcat 15r VREG 85,90 8896 546203 /opt/j2se/usr/j2se/jre/lib/ext/dnsns.jar java 29472 tomcat 16r VREG 85,90 927669 624953 /opt/jakarta- tomcat-4.1.29/common/endorsed/xercesImpl.jar java 29472 tomcat 17r VREG 85,90 123705 624954 /opt/jakarta- tomcat-4.1.29/common/endorsed/xmlParserAPIs.jar java 29472 tomcat 18r VREG 85,90 26811340 546256 /opt/j2se/usr/j2se/jre/lib/rt.jar java 29472 tomcat 19r VREG 85,90 89343 546257 /opt/j2se/usr/j2se/jre/lib/sunrsasign.jar java 29472 tomcat 20r VREG 85,90 895647 546249 /opt/j2se/usr/j2se/jre/lib/jsse.jar java 29472 tomcat 21r VREG 85,90 69596 546248 /opt/j2se/usr/j2se/jre/lib/jce.jar java 29472 tomcat 22r VREG 85,90 5604126 546194 /opt/j2se/usr/j2se/jre/lib/charsets.jar java 29472 tomcat 23r VREG 85,90 5092912 410527 /opt/j2se/usr/j2se/lib/tools.jar java 29472 tomcat 24r VREG 85,90 24694 488630 /opt/jakarta- tomcat-4.1.29/bin/bootstrap.jar java 29472 tomcat 25u IPv4 0x31321b37528 0t0 TCP *:9009 (LISTEN) java 29472 tomcat 26u IPv4 0x3008b8c4df0 0t0 TCP localhost:9005 (LISTEN) java 29472 tomcat 32u FIFO 0x3000fe7d8e0 0t0 504826 (fifofs) PIPE->0x3000fe7d7e0 java 29472 tomcat 33u FIFO 0x313116e8fe0 0t0 504827 (fifofs) PIPE->0x313116e90e0 java 29472 tomcat 34u FIFO 0x313116e8860 0t0 504830 (fifofs) PIPE->0x313116e8760 java 29472 tomcat 35u FIFO 0x300b89f8920 0t0 504828 (fifofs) PIPE->0x300b89f8a20 java 29472 tomcat 36u FIFO 0x30b8202cfa0 0t0 504831 (fifofs) PIPE->0x30b8202d0a0 java 29472 tomcat 38u FIFO 0x31311700740 0t0 504832 (fifofs) PIPE->0x31311700840 java 29472 tomcat 39u FIFO 0x313116e8420 0t0 504858 (fifofs) PIPE->0x313116e8320 java 29472 tomcat 40u FIFO 0x313116e9200 0t0 504859 (fifofs) PIPE->0x313116e9300 java 29472 tomcat 42u FIFO 0x3000114c8c0 0t0 504860 (fifofs) PIPE->0x3000114c9c0 These PIPEs die and they only build up. 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