On Wed, Sep 07, 2011 at 11:48:11AM -0700, Kathy wrote: > Hi all -- > > I recently temporarily deployed an upgraded Clearcase server (7.1.2.3) > on 64 bit RHEL 5.6. With it I was using Redhat's release of Samba for > that version of the OS -- 3.0.33. The system has 32 GB of memory > and within 12 hours, it would be down into swap. Maximum active > licenses used is 36 but a more typical load is 18-25 users having a > Clearcase license at once. Clearcase clients are on Windows. This > server is the whole shebang -- license server, view and vob server. > All disks are local, no NAS. Most of the time our developers are > using snapshot views but merge into the dynamic views. > > It looks to me like I have a memory leak, and IBM is blaming Samba,
Main question is: Do the smbd processes really consume all that memory? > seeing that I was using an unblessed version of the tool. Apparently > 3.0.32 is blessed and 3.0.33 is not. Although I'm skeptical, I'm > willing to entertain the idea that a 0.01 release change could be the > problem, so I recently updated to 3.5.8, which apparently is blessed > to work with 7.1.2.3. This system is now a test server so we can test > it without impacting production use. We still need to do some load > testing on it. The original server is on different hardware (still > Dell, though), running 32 bit RHEL 5.2 and Clearcase 7.0.1.3, and > Samba 3.0.28 (which also apparently isn't blessed by IBM but has never > had any problems). I am using the samba smb.conf file for both > releases/servers. > > For those of you who are familiar with how Clearcase and Samba work > together, my questions are the following: > > 1. What is typical memory usage with Clearcase and Samba? Is it > typical for it to cache all memory, eat into a little bit of swap (say > 312k) and then sit there like that and work just fine? Or should I > expect it to eat up initially a few gigs of memory and then stay > relatively stable, recognizing that over time the running system will > slowly eat up memory (but not all in 12 hours). > > 2. IBM has suggested making sure these conditions are met for mnode > values on Windows clients and the MAX_OPEN_FILES is big enough on the > Samba side: https://www-304.ibm.com/support/docview.wss?uid=swg21169548 > > Basically saying that for a 64 bit Clearcase/Samba server, the max > mnode values should be set to 800 and not the default 1800. > Anyone with experience with this? We have not seen the particular > errors mentioned in this article, but IBM support is telling me about > it as a guideline. Also mentioned in the article is MAX_OPEN_FILES. > My current value for that is 16,384. How do you know what is an > optimal value for that for your system? > > Thanks for any input. I have asked IBM to describe typical memory > usage but so far I'm not getting any solid answers. > > Kathy > -- > To unsubscribe from this list go to the following URL and read the > instructions: https://lists.samba.org/mailman/options/samba -- SerNet GmbH, Bahnhofsallee 1b, 37081 Göttingen phone: +49-551-370000-0, fax: +49-551-370000-9 AG Göttingen, HRB 2816, GF: Dr. Johannes Loxen -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
