Patrick's right that the perfromance problem is probably due to the swappiness setting. the 2.4 kernel didn't have this option but a swappiness value of 0 gives the 2.6 kernel something close to what 2.4 is running. the default is 60 and no matter how much ram you have TSM will be swapped out to disk and run like a dog. i saw this with vmstat, once i set swappiness to 0, TSM ran like a scalded dog.
but again you need to have plenty of ram and TSM needs to be the only major application running on the server. basically changing this option tunes the kernel performance between an application or a print/file server. john Subject: Re: TSM and Linux From: Patrick Boutilier <boutilpj AT EDNET.NS DOT CA> To: ADSM-L AT VM.MARIST DOT EDU Date: Tue, 27 Feb 2007 11:28:07 -0400 Leigh Reed wrote: >Patrick > >You don't mention your version of TSM server or h/w platform and this is a fairly old APAR but I thought I'd mention it. TSM server 5.3.4.x on Intel (Dell 2950) hardware. >APAR IC47731 deals with poor performance on Linux kernel 2.6 on zSeries. Did see that APAR a while ago. The vm.swappiness setting mentioned earlier might be something to try if I ever feel the need to try and upgrade again. :-) ----------------------------------------- NOTICE: This communication is intended only for the person or entity to whom it is addressed and may contain confidential, proprietary, and/or privileged material. Unless you are the intended addressee, any review, reliance, dissemination, distribution, copying or use whatsoever of this communication is strictly prohibited. If you received this in error, please reply immediately and delete the material from all computers. Email sent through the Internet is not secure. Do not use email to send us confidential information such as credit card numbers, PIN numbers, passwords, Social Security Numbers, Account numbers, or other important and confidential information.
