asked on

Solaris Idle Sockets - Running out of File Descriptors

I have a process (an old Tomcat running Java 1.2) which is running out of File Descriptors. Running lsof -p <pid> lists a whole bunch of IDLE sockets. In fact, over time, this number increases until the error happens. I have another Tomcat, with the same configuration, on another machine which runs the same software (we have the workload split in two) and it never runs into this problem. In trying to track the error down, the following questions surfaced.

What IS an IDLE socket? (as reported by lsof) The sockets that I find look like:

java 10070 netrez 17u IPv4 0x3023d66be68 0t10553 TCP xxxxxx:*->yyyyyy pegs.com:* (IDLE)

where xxxxxx is the name of the machine Tomcat is running on and yyyyyy is the machine Apache is on.

Thanks

yuzh

Which version of Solaris are you runing?

Please have a look at this doc to see if it can help:
http://servlets.com/archive/servlet/ReadMsg?msgId=410087&listName=tomcat-user
or
http://marc.theaimsgroup.com/?l=tomcat-user&m=106242538603499&w=2

gustnado

ASKER

From uname -r, it is apparently 5.9, which doesn't seem reasonable (I'm not the sysadmin).

The links are for more recent versions of Tomcat.

They are about TIME_WAIT sockets. My question is about IDLE sockets.

With an IDLE socket, shouldn't the other endpoint also show (on its machine) and also be IDLE?

Thanks

John

yuzh

5.9 means Solaris 9, you can post the output of:
uname -a

to show more details

gustnado

ASKER

SunOS xxxxx 5.9 Generic_118558-14 sun4u sparc SUNW,Sun-Fire-880

Thanks - here it is. I x'ed out the machine name to keep customer's privacy

We also have used pfiles -p and there the sockets show up with only one endpoint

They look like:

82: S_IFSOCK mode:0666 dev:309,0 ino:12578 uid:0 gid:0 size:0
O_RDWR
sockname: AF_INET 0.0.0.0 port: 0

There are over 60 of them right now.

Thanks

jekl2000

Are both servers Solaris 9 and the same patch level? This one is at 118558-14 which is a little dated. I have not checked for patches that are relevant to your problem but its a good place to start.

SunOS xxxxx 5.9 Generic_118558-14 sun4u sparc SUNW,Sun-Fire-880

ASKER CERTIFIED SOLUTION

yuzh

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial