Good Morning John, Our Network Manager asked why you recommended removing the anti-virus software vs. disabling them. Could/would you please share your rationale for making that recommendation?
The feedback I am getting as a result of this posting has been incredibly helpful. Rob Smith Philadelphia University -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Jenkins Sent: Saturday, March 29, 2008 8:29 PM To: [email protected] Subject: RE: [U2] RE: UNIDATA 7.1 performance measures Ibd start by looking for specific bottlenecks. Itbs too easy to see one of the system constraints and assume that's your bottleneck (been there). Run some mete As others have said, see a specific bottleneck first then take it from there. Some suggestions on things to look at in Windows and hardware - I'm assuming all the usual has been done inside UniData itself. __________________ Anti-Virus software killing you? REMOVE it first for the avoidance of doubt - then decide. Donbt just reconfigure or disable - REMOVE. Tweak afterwards - know whether itbs worth tweaking first. Paging (yes/no/how much)? Disk performance *read *write *wait I/O Are you using RAID? Should be 0+1, try and avoid RAID 5 Use hardware RAID not software Turn off read-ahead, optimise for random, not sequential Steps vary for different SANS (Hitachi / Veritas / Shark etc). If using an external SAN: * has the memory battery failed? (turns off write caching - a killer) Put paging space on a separate disk, and UniData TMP also. * Do you have remote mirroring on the SAM turned on (requiring remote commit on writes can be a killer). _________________________ If 3Gb is does turn out to be an issue consider Unix, much better memory management. Linux on your x86 platform seems the logical move (same hardware). You also get better CPU resource usage on Unix then Windows. Memory could be a bottleneck for you, but Ibd be surprised. The usual memory related issues I see on Windows (or Unix come to that) are due to file import/export programs READING and WRITING truly enormous text files from the O/S file structures. READSEQ and WRITESEQ are the cure there/ Regards JayJay ________________________________ From: Smith, Robert Sent: Thursday, March 27, 2008 11:37 AM To: [email protected] Subject: UNIDATA 7.1 performance measures Good Morning, We are a UNIDATA shop and presently we are struggling with identifying the best way to increase the performance level of our environment. We presently are running UD on a Windows Enterprise server (SP2) with 16gig of ram and 8 - 3gig processors. We have read through some MS Knowledge Base articles that suggest a possible performance increase if we use the /PAE and /3GB boot.ini switches. We were wondering whether anyone has deployed these settings before and if there were any problems that resulted...with either the OS or database. Does anyone have any suggestions regarding ways to increase UD performance levels in a Win2k3 environment? Thanks in advance, Rob Smith Philadelphia University ------- u2-users mailing list [email protected] To unsubscribe please visit http://listserver.u2ug.org/ ------- u2-users mailing list [email protected] To unsubscribe please visit http://listserver.u2ug.org/ ------- u2-users mailing list [email protected] To unsubscribe please visit http://listserver.u2ug.org/ ------- u2-users mailing list [email protected] To unsubscribe please visit http://listserver.u2ug.org/ ------- u2-users mailing list [email protected] To unsubscribe please visit http://listserver.u2ug.org/
