Run, don't walk, to AS3.0. The memory manager in 2.1 is a piece of garbage and caused us all kinds of issues (super low performance and out and out crashes) We also got interrupt stack overflows left and right. All of this was fixed up in AS3.0. Make sure you set your vm.pagecache in /etc/sysctl.conf to something reasonable (I'm using vm.pagecache = 1 5 15) or you'll end up with your dsmserv processes residing mostly on disk as linux' overly aggressive file system caching pushes all your processes out of memory. This makes your database run *much* better. Not sure if your running qlogic fibre channel, but watch out for the driver that ships with the AS3.0 install. I had major performance issues with that through a brocade 12K switch. Getting the IBM certified 6.60.60 (?) driver or qlogic's 7.X driver fixed that up.
Hope that helps - I spent the better part of a year banging my head against AS2.1, you have been warned :-)
Jason
-- DreamWorks Animation SKG
On Dec 2, 2004, at 10:43 AM, Mark D. Rodriguez wrote:
Hi,
I have a Linux based ITSM server running RHAS 2.1 with ITSM 5.2.2 server code. The ITSM server is an IBM X345 w/ 2 proc., 3GB memory, disk storage is on FASTt. There are a mix of Windows, Novel, and Linux clients running ITSM 5.2.2. This is a new environment and we are still working out the kinks. The biggest issue is the Aggregate transfer rate on all of the machines is below 400KB/Sec. on a 100Mb ethernet connection. We have done FTP test that show us transfer rates more like what we would expect, i.e. approximately 10MB/sec.
I am wondering has anyone else seen this kind of performance problem? Were you able to solve it and if so how?
-- Regards, Mark D. Rodriguez President MDR Consulting, Inc.
======================================================================= ======== MDR Consulting The very best in Technical Training and Consulting. IBM Advanced Business Partner SAIR Linux and GNU Authorized Center for Education IBM Certified Advanced Technical Expert, CATE AIX Support and Performance Tuning, RS6000 SP, TSM/ADSM and Linux Red Hat Certified Engineer, RHCE ======================================================================= ========
-- DreamWorks Animation SKG (818) 695-3782
