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Memory for iwserver

DavidMusser

Working on windows... started a workflow (with an external task) yes there is another thread on those :-)

But don't think this is an issue, but had a question about TeamSite in general.

if a process starts... i.e. a perl command to get all workflows, and get the owners... I have such a script that I run from the command line.

This script exits properly and all that stuff, but it seems like the iwserver.exe's memusage does not go back down. It stays at the new level.

i.e. when I start the process it's at 110,366k, when it finishes it's at 117,000k, and stays there. Should this process go down after a while, or does iwserver keep the memory in case it needs it.

It's never shut down the server due to this, but was about 400,000 before the last restart.

Anyway has anyone see this Win2k TS 6.5 SP2.

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jed

I cannot really speak to windows, but this is common on Solaris. Once it allocates the memory, it is not going to give it back. It will generally get up to 2gigs after enough uptime. Maybe you windows guys are not just used to a lot of uptime Smiley Happy

I would not see high memory usage as a "bad thing" assuming iwserver does not crash after X days or X commands.

Here are the stats for our dev server with the last restart in late Feb:


   PID USERNAME THR PRI NICE  SIZE   RES STATE    TIME    CPU COMMAND
25968 root     289  59    0 2267M 2145M sleep  51.1H  0.03% iwserver.sol

Migrateduser

I don't have the exact numbers in front of me, but we've actually seen the opposite problem as well. On windows, somewhere around 2.5GB seems to be all the memory that the iwserver process will ever use. We have a box at one client that has about 8GB of physical RAM, and most of it goes unused.

I'd rather see it be more tuneable, so that you could specify a maximum amount of RAM that iwserver would use for caching and use the whole allocated amount.

Jed has slightly more RAM than that on his Solaris box :cool: . What's the most memory you've ever seen the process grab?

jed

I don't have the exact numbers in front of me, but we've actually seen the opposite problem as well. On windows, somewhere around 2.5GB seems to be all the memory that the iwserver process will ever use. We have a box at one client that has about 8GB of physical RAM, and most of it goes unused.

I'd rather see it be more tuneable, so that you could specify a maximum amount of RAM that iwserver would use for caching and use the whole allocated amount.

Jed has slightly more RAM than that on his Solaris box :cool: . What's the most memory you've ever seen the process grab?

TeamSite is a 32 bit app, so TS is limited by that constraint. I think a 32 bit app can take up to 4 gigs in theory. IW may impose other hard limits on the app.

DavidMusser

Thanks to all :-) It's stable now it seems and is not giving it back so I'm not going to worry. Just wanted to know for sure if it is nice and gives back what it takes :-)

stefanmaier

Hi,
here're some more information about the windows memory model and the 4GB/2GB borders:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/memory/base/virtual_address_space.asp

Stefan

Migrateduser

Yeah, 2 or 4 would have made sense to me. 2.5 seemed a little arbitrary. Anyone know when there will be a version for the 64bit version of windows server?

stefanmaier

Hi all,

did anybody get some news on this memory behaviour?
We also have an increasing memory usage on our TS6.5SP2 Win2003 system.

To describe what "increasing" means:
I collect some memory stats from the iwserver.exe with the clt "pslist", a command line tool from sysinternals.com ("pslist -m iwserver").
Especially the column Virtual Memory is interesting, see picture attached.
The picture shows the memory amount of the iwserver.exe between two server reboot (03-april-2006 and 22-april-2006).

If a value of 2GB is exceeded, iwserver.exe crashes.
To answer one of your first questions: No, we don't let run any scripts or jobs at the memory increasing times...

Any suggestions, hints?

Thanks
Stefan

CRB

we have the same issue here.. iwserver went up today since i rebooted the box from 100 mb to 930mbs right now and it never goes down... i had users complained about slow teamsite that is why i think this is an issue. one of the users here said that they had a memory leak as iwserver locates more memory everytime it gets a request from users to login and this was caused by a customization made in apache module...

look at this:
http://devnet.interwoven.com/forums_vb/showthread.php?t=19142&forumid=11

DavidMusser

Ours was caused by issues with the number of iwperl processes that were never releasing memory, so we created another solution for this using a java service to handle all the processes.

-D

CRB

can i know how u arrived to the root cause? and maybe the solution you.. cause my logs arent giving us enough info, and the iwserver still holding alot of memory... let me knwo of the best way to troubleshoot this to get the root cause plz im on w2k

DavidMusser

I sent you more info in your private messages and some contact info for me.

stefanmaier

Unfortunatly we don't have any solution for that problem, only thing we do is to restart the iwserver.exe every two weeks...
Perhaps we find some more hints to get closer to a problem solution together.

Regards
Stefan