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Operating Systems Solaris Defunct process are generated after JNLP connection with a slave and the machine gets very slow Post 302919170 by javaPIC on Monday 29th of September 2014 10:10:29 AM
Old 09-29-2014
Defunct process are generated after JNLP connection with a slave and the machine gets very slow

Hi everyone,

I'm working on continous integration with Jenkins.

I’m facing an issue while connecting a slave (solaris sparc 8) with Jenkins ver. 1.532.2

This slave is connected via the option “Launch slave via execution of command on the Master”.

Connection is established with:

- Connecting to the slave via FTP
- Executing java command:
Code:
/jdk1.6.0_24/bin/java -jar slave.jar -jnlpUrl file:///...

This way, the connection is successful.

However, the slave gets extremely slow and a lot of defunct process are generated. It’s a real problem because no jobs can run on this slave.

I can’t find the reason why there is zombie generation, the parent of these defunct is the java command (PPID) ....

A core file is also generated (even if the java process is still running) with some lines like these:
Code:
FF330000     32K read/exec      /udev/pac/jdk1.6.0_24/jre/lib/sparc/jli/libjli.so
FF346000     16K read/write/exec   /udev/pac/jdk1.6.0_24/jre/lib/sparc/jli/libjli.so


Can you please help on this? Any idea is welcomed.

Thanks you.



Best regards.


Moderator's Comments:
Mod Comment Please use code tags next time for your code and data. Thanks

Last edited by vbe; 09-29-2014 at 11:16 AM..
 

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TCOM(4) 						   BSD Kernel Interfaces Manual 						   TCOM(4)

NAME
tcom -- multiplexing serial communications interface SYNOPSIS
For 4-port TC-400 series boards: tcom0 at isa? port 0x100 irq 5 com2 at tcom? slave ? com3 at tcom? slave ? com4 at tcom? slave ? com5 at tcom? slave ? For 8-port TC-800 series boards: tcom0 at isa? port 0x100 irq 5 com2 at tcom? slave ? com3 at tcom? slave ? com4 at tcom? slave ? com5 at tcom? slave ? com6 at tcom? slave ? com7 at tcom? slave ? com8 at tcom? slave ? com9 at tcom? slave ? DESCRIPTION
The tcom driver provides support for the Byte Runner Technologies TC-400 and TC-800 series boards that multiplex together up to four or eight EIA RS-232C (CCITT V.28) communications interfaces. Each tcom device is the master device for up to eight com devices. The kernel configuration specifies these com devices as slave devices of the tcom device, as shown in the synopsis. The slave ID given for each com device determines which bit in the interrupt multiplexing regis- ter is tested to find interrupts for that device. The port specification for the tcom device is used to compute the base addresses for the com subdevices and the port for the interrupt multiplexing register. Not all possible configuration options are currently supported (for example, speeds beyond 115200 baud are not currently supported). FILES
/dev/tty?? SEE ALSO
com(4) HISTORY
The tcom driver was written by Jukka Marin. BSD
May 20, 1998 BSD
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