topic Re: Dtfile performance really bad... in Operating System - HP-UX

Dtfile performance really bad...

Leon Gustard — Mon, 07 Mar 2005 08:57:53 GMT

Hi all,

I hope you can assist....

I have received an Ignite image from a colleage in Sweden - this image has been installed, tested and everything is Ok apart from one thing - the performance of dtfile. The workstation is a C3700, the image is based on HP-UX 11i and the Goldapps and Goldbase patches from Dec 2004 are installed.

When a user uses dtfile to view the contents of a directory, dtfile can take a number of minutes to display the directory contents. This seems to be without regard for the size or quantity of files in the directory.

Any help is much appreciated.

Many thanks,
Leon.

Re: Dtfile performance really bad...

Robert-Jan Goossens — Mon, 07 Mar 2005 09:21:26 GMT

Hi Leon,

Any errors in the /var/adm/syslog/syslog.log file ?

Robert-Jan

Re: Dtfile performance really bad...

Leon Gustard — Mon, 07 Mar 2005 10:49:29 GMT

Hi Robert-Jan

Sorry, there is nothing unusual in syslog.log

Regards,
Leon

Re: Dtfile performance really bad...

A. Clay Stephenson — Mon, 07 Mar 2005 10:56:50 GMT

I would bet that this is an NFS problem. The first thing to do is try to narrow the scope of the problem. Open a terminal session and do an ls of exactly the same directory. Is the response normal.

Re: Dtfile performance really bad...

Leon Gustard — Mon, 07 Mar 2005 11:11:26 GMT

Yes, the response is completely normal when using ls. The problem only occurs when using dtfile - I have re-built the machine (re-installed the image) and it seems to be worse on nfs filesystems compared to jfs filesystems.

Re: Dtfile performance really bad...

A. Clay Stephenson — Mon, 07 Mar 2005 11:54:31 GMT

Check to see if your node names match the hostname. I fould a note in PHSS_32110 that dtfile has a problem with this.

Re: Dtfile performance really bad...

Leon Gustard — Tue, 08 Mar 2005 04:36:38 GMT

Yes, the node names do match the hostnames - we are running NIS. However the PHSS_32110 patchset is not installed - should I install it?

Re: Dtfile performance really bad...

Robert-Jan Goossens — Tue, 08 Mar 2005 04:49:07 GMT

Leon,

Check this doc from the ITRC database.

http://www5.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000077250698

Document description: dtfile performance greatly reduced with latest patches
Document id: 8606388373

Regards,
Robert-Jan

Re: Dtfile performance really bad...

Leon Gustard — Tue, 08 Mar 2005 05:13:34 GMT

Hi Robert-Jan

This looks like the definitive answer!

I will test it this afternoon and feed back.

Many thanks - much appreciated!

Leon.

Re: Dtfile performance really bad...

Leon Gustard — Tue, 08 Mar 2005 09:45:18 GMT

Hi Robert-Jan,

That fixed the problem completely.

Many thanks for your help!

Best regards,
Leon.