topic Re: X-windows leaving OPEN connections on HPUX 11.11 in Operating System - HP-UX

X-windows leaving OPEN connections on HPUX 11.11

patrick coutinho — Wed, 15 Dec 2004 13:10:13 GMT

Hi,

Have come accross something really interesting today.

When i open a x-windows session on my server and then say for example this session terminates abnormally because of a lan disconnect, the session on the server never closes. it remains OPEN and ESTABLISHED.

In my current project we have several clients connecting via x-windows and i can see that many of their sessions show ESTABLISHED well after they have supossedly closed them. Now these may be uninitiated users who did not gracefully close their sessions.

But this is a major problem for me. Using lsof i could see that their sessions were in some cases zombies using the PPID 1.

How do i overcome this problem. If i have such sessions that still remain OPEN and show ESTABLISHED even after they have been terminated by the users, this may cause a resource problem eventually.

Any advice will help me a lot. How do i get rid of such conections.

Need all the help i can get.

Thanks in advance.

Rgds

Patrick

Re: X-windows leaving OPEN connections on HPUX 11.11

Steven E. Protter — Wed, 15 Dec 2004 13:27:34 GMT

Post up some sample lsof output.

I beleive I can put together a simple script that will kill the process id's of sessions that are not in a zombie state.

Once its a zombie there is little to do. To deal with that you may need motif patches and other patches. A first step down that road would be the June 2004 quarterly update.

After that look at the X application vendors. They may also have patches to their applicatons that might alleviate the problem.

SEP

Re: X-windows leaving OPEN connections on HPUX 11.11

Sanjay_6 — Wed, 15 Dec 2004 13:30:00 GMT

Hi Patrick,

Take a look at patch PHSS_30262,

http://www2.itrc.hp.com/service/patch/patchDetail.do?BC=patch.breadcrumb.main|patch.breadcrumb.search|&patchid=PHSS_30262&context=hpux:800:11:11

The latest patch in this category is PHSS_31000, hp recommended patch is PHSS_30787.

Hope this helps.

Regds

Re: X-windows leaving OPEN connections on HPUX 11.11

patrick coutinho — Thu, 16 Dec 2004 13:37:59 GMT

Thanks everyone,

Sanjay i will try out that patch. great help. Thanks

rgds

Patrick