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Accepted
Brad Mace
Asked: 2012-08-02 08:30:38 +0800 CST

Starting program once leads to 10 instances

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I have an old SUSE 8.1 server which just recently started acting crazy.

If I start a program once:

/usr/local/jdk1.6.0_21/bin/java -cp example-ser-0.8.jar:/usr/local/lib/java/slf4j-api-1.6.1.jar:/usr/local/lib/java/logback-core-0.9.24.jar:/usr/local/lib/java/logback-classic-0.9.24.jar:/usr/local/lib/java/jcl-over-slf4j-1.6.1.jar:/usr/local/lib/java/commons-cli-1.2.jar:/usr/local/lib/java/commons-lang-2.5.jar:/usr/local/lib/java/mysql-connector-java-5.1.13-bin.jar:/usr/local/lib/java/xBaseJ-20091203.jar:/usr/local/lib/java/Translator-0.7.0.jar:/usr/local/lib/java/antlr-3.2.jar:/usr/local/lib/java/joda-time-1.6.jar -Dlogback.configurationFile=logback-test.xml example.ser.Scanner abc12345

There will be 10 instances running (same user, same arguments) as shown by ps ax -l | grep Scanner:

  F S   UID   PID  PPID  C PRI  NI ADDR SZ WCHAN  TTY        TIME CMD
000 S   502 20228 20227  0  75   0 - 98222 rt_sig pts/11     0:00 /usr/local/jdk1.6.0_21/bin/java -cp /usr/local/lib/java/example-ser-0.7.jar:/usr/local/lib/java/slf4j-api-1.6.1.jar:/usr/local/lib/java/logback-core-0.9.24.jar:/usr/local/lib/java/logback-classic-0.9.24.jar:/usr/local/lib/java/jcl-over-slf4j-1.6.1.jar:/usr/local/lib/java/commons-cli-1.2.jar:/usr/local/lib/java/commons-lang-2.5.jar:/usr/local/lib/java/mysql-connector-java-5.1.13-bin.jar:/usr/local/lib/java/xBaseJ-20091203.jar:/usr/local/lib/java/CampaignRulesTranslator-0.7.0.jar:/usr/local/lib/java/antlr-3.2.jar:/usr/local/lib/java/joda-time-1.6.jar -Dlogback.configurationFile=/usr/local/lib/java/logback.xml example.ser.Scanner abc12345
002 S   502 20229 20228  0  75   0 - 98222 schedu pts/11     0:00 /usr/local/jdk1.6.0_21/bin/java -cp /usr/local/lib/java/example-ser-0.7.jar:/usr/local/lib/java/slf4j-api-1.6.1.jar:/usr/local/lib/java/logback-core-0.9.24.jar:/usr/local/lib/java/logback-classic-0.9.24.jar:/usr/local/lib/java/jcl-over-slf4j-1.6.1.jar:/usr/local/lib/java/commons-cli-1.2.jar:/usr/local/lib/java/commons-lang-2.5.jar:/usr/local/lib/java/mysql-connector-java-5.1.13-bin.jar:/usr/local/lib/java/xBaseJ-20091203.jar:/usr/local/lib/java/CampaignRulesTranslator-0.7.0.jar:/usr/local/lib/java/antlr-3.2.jar:/usr/local/lib/java/joda-time-1.6.jar -Dlogback.configurationFile=/usr/local/lib/java/logback.xml example.ser.Scanner abc12345
002 S   502 20230 20229  0  75   0 - 98222 schedu pts/11     0:14 /usr/local/jdk1.6.0_21/bin/java -cp /usr/local/lib/java/example-ser-0.7.jar:/usr/local/lib/java/slf4j-api-1.6.1.jar:/usr/local/lib/java/logback-core-0.9.24.jar:/usr/local/lib/java/logback-classic-0.9.24.jar:/usr/local/lib/java/jcl-over-slf4j-1.6.1.jar:/usr/local/lib/java/commons-cli-1.2.jar:/usr/local/lib/java/commons-lang-2.5.jar:/usr/local/lib/java/mysql-connector-java-5.1.13-bin.jar:/usr/local/lib/java/xBaseJ-20091203.jar:/usr/local/lib/java/CampaignRulesTranslator-0.7.0.jar:/usr/local/lib/java/antlr-3.2.jar:/usr/local/lib/java/joda-time-1.6.jar -Dlogback.configurationFile=/usr/local/lib/java/logback.xml example.ser.Scanner abc12345
002 S   502 20231 20229  0  75   0 - 98222 schedu pts/11     0:01 /usr/local/jdk1.6.0_21/bin/java -cp /usr/local/lib/java/example-ser-0.7.jar:/usr/local/lib/java/slf4j-api-1.6.1.jar:/usr/local/lib/java/logback-core-0.9.24.jar:/usr/local/lib/java/logback-classic-0.9.24.jar:/usr/local/lib/java/jcl-over-slf4j-1.6.1.jar:/usr/local/lib/java/commons-cli-1.2.jar:/usr/local/lib/java/commons-lang-2.5.jar:/usr/local/lib/java/mysql-connector-java-5.1.13-bin.jar:/usr/local/lib/java/xBaseJ-20091203.jar:/usr/local/lib/java/CampaignRulesTranslator-0.7.0.jar:/usr/local/lib/java/antlr-3.2.jar:/usr/local/lib/java/joda-time-1.6.jar -Dlogback.configurationFile=/usr/local/lib/java/logback.xml example.ser.Scanner abc12345
002 S   502 20232 20229  0  76   0 - 98222 rt_sig pts/11     0:00 /usr/local/jdk1.6.0_21/bin/java -cp /usr/local/lib/java/example-ser-0.7.jar:/usr/local/lib/java/slf4j-api-1.6.1.jar:/usr/local/lib/java/logback-core-0.9.24.jar:/usr/local/lib/java/logback-classic-0.9.24.jar:/usr/local/lib/java/jcl-over-slf4j-1.6.1.jar:/usr/local/lib/java/commons-cli-1.2.jar:/usr/local/lib/java/commons-lang-2.5.jar:/usr/local/lib/java/mysql-connector-java-5.1.13-bin.jar:/usr/local/lib/java/xBaseJ-20091203.jar:/usr/local/lib/java/CampaignRulesTranslator-0.7.0.jar:/usr/local/lib/java/antlr-3.2.jar:/usr/local/lib/java/joda-time-1.6.jar -Dlogback.configurationFile=/usr/local/lib/java/logback.xml example.ser.Scanner abc12345
002 S   502 20233 20229  0  76   0 - 98222 rt_sig pts/11     0:00 /usr/local/jdk1.6.0_21/bin/java -cp /usr/local/lib/java/example-ser-0.7.jar:/usr/local/lib/java/slf4j-api-1.6.1.jar:/usr/local/lib/java/logback-core-0.9.24.jar:/usr/local/lib/java/logback-classic-0.9.24.jar:/usr/local/lib/java/jcl-over-slf4j-1.6.1.jar:/usr/local/lib/java/commons-cli-1.2.jar:/usr/local/lib/java/commons-lang-2.5.jar:/usr/local/lib/java/mysql-connector-java-5.1.13-bin.jar:/usr/local/lib/java/xBaseJ-20091203.jar:/usr/local/lib/java/CampaignRulesTranslator-0.7.0.jar:/usr/local/lib/java/antlr-3.2.jar:/usr/local/lib/java/joda-time-1.6.jar -Dlogback.configurationFile=/usr/local/lib/java/logback.xml example.ser.Scanner abc12345
002 S   502 20234 20229  0  80   0 - 98222 rt_sig pts/11     0:00 /usr/local/jdk1.6.0_21/bin/java -cp /usr/local/lib/java/example-ser-0.7.jar:/usr/local/lib/java/slf4j-api-1.6.1.jar:/usr/local/lib/java/logback-core-0.9.24.jar:/usr/local/lib/java/logback-classic-0.9.24.jar:/usr/local/lib/java/jcl-over-slf4j-1.6.1.jar:/usr/local/lib/java/commons-cli-1.2.jar:/usr/local/lib/java/commons-lang-2.5.jar:/usr/local/lib/java/mysql-connector-java-5.1.13-bin.jar:/usr/local/lib/java/xBaseJ-20091203.jar:/usr/local/lib/java/CampaignRulesTranslator-0.7.0.jar:/usr/local/lib/java/antlr-3.2.jar:/usr/local/lib/java/joda-time-1.6.jar -Dlogback.configurationFile=/usr/local/lib/java/logback.xml example.ser.Scanner abc12345
002 S   502 20235 20229  0  75   0 - 98222 rt_sig pts/11     0:00 /usr/local/jdk1.6.0_21/bin/java -cp /usr/local/lib/java/example-ser-0.7.jar:/usr/local/lib/java/slf4j-api-1.6.1.jar:/usr/local/lib/java/logback-core-0.9.24.jar:/usr/local/lib/java/logback-classic-0.9.24.jar:/usr/local/lib/java/jcl-over-slf4j-1.6.1.jar:/usr/local/lib/java/commons-cli-1.2.jar:/usr/local/lib/java/commons-lang-2.5.jar:/usr/local/lib/java/mysql-connector-java-5.1.13-bin.jar:/usr/local/lib/java/xBaseJ-20091203.jar:/usr/local/lib/java/CampaignRulesTranslator-0.7.0.jar:/usr/local/lib/java/antlr-3.2.jar:/usr/local/lib/java/joda-time-1.6.jar -Dlogback.configurationFile=/usr/local/lib/java/logback.xml example.ser.Scanner abc12345
002 S   502 20236 20229  0  80   0 - 98222 rt_sig pts/11     0:00 /usr/local/jdk1.6.0_21/bin/java -cp /usr/local/lib/java/example-ser-0.7.jar:/usr/local/lib/java/slf4j-api-1.6.1.jar:/usr/local/lib/java/logback-core-0.9.24.jar:/usr/local/lib/java/logback-classic-0.9.24.jar:/usr/local/lib/java/jcl-over-slf4j-1.6.1.jar:/usr/local/lib/java/commons-cli-1.2.jar:/usr/local/lib/java/commons-lang-2.5.jar:/usr/local/lib/java/mysql-connector-java-5.1.13-bin.jar:/usr/local/lib/java/xBaseJ-20091203.jar:/usr/local/lib/java/CampaignRulesTranslator-0.7.0.jar:/usr/local/lib/java/antlr-3.2.jar:/usr/local/lib/java/joda-time-1.6.jar -Dlogback.configurationFile=/usr/local/lib/java/logback.xml example.ser.Scanner abc12345
002 S   502 20237 20229  0  75   0 - 98222 schedu pts/11     0:00 /usr/local/jdk1.6.0_21/bin/java -cp /usr/local/lib/java/example-ser-0.7.jar:/usr/local/lib/java/slf4j-api-1.6.1.jar:/usr/local/lib/java/logback-core-0.9.24.jar:/usr/local/lib/java/logback-classic-0.9.24.jar:/usr/local/lib/java/jcl-over-slf4j-1.6.1.jar:/usr/local/lib/java/commons-cli-1.2.jar:/usr/local/lib/java/commons-lang-2.5.jar:/usr/local/lib/java/mysql-connector-java-5.1.13-bin.jar:/usr/local/lib/java/xBaseJ-20091203.jar:/usr/local/lib/java/CampaignRulesTranslator-0.7.0.jar:/usr/local/lib/java/antlr-3.2.jar:/usr/local/lib/java/joda-time-1.6.jar -Dlogback.configurationFile=/usr/local/lib/java/logback.xml example.ser.Scanner abc12345
000 S     0 25155 19094  0  80   0 -   406 pipe_w pts/2      0:00 grep Scanner

If I ^C the terminal where I started the program, all 10 disappear. This program doesn't do any forking or create any extra threads. I also tried several older versions of this program going back years before this problem and they're all experiencing this now as well. What could be going on here?

linux

1 Answers

  1. Best Answer

    The program itself might not fork but the libs/jars provided on the classpath might be forking , I would first try to check those libs code for forks. If that fails, try to execute it with a different JVM version and/or environment and see what happens.

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