I think the standard formulas work well as a starting point, but over the years I've gotten stingy on pagefile size, since you can get defragmentation in the pagefile and really big ones can get correspondingly more fragmented if they start to get up to a fair percentage of total disk space. In any case, my overall goal is to prevent the OS from having to grow the pagefile as the memory pressure increases, since growing the page file is a pretty expensive operation, especially if the disk is already fragmented. So what I try to do is keep an eye on the system's total Committed Bytes during the server's typical workload cycle. You can see peak committed bytes in Task Manager (under Commit Charge) or in PerfMon (under the Memory object). I'm sure there's a technical reason behind it, but Windows seems to grow the pagefile when the Committed Bytes allocated by the system gets near the Commit Limit. The commit limit is roughly the amount of physical MB of RAM you have on the system + the current minimum page file size. So, if you have 500MB of Ram and a 1.5 GB minimum page file size, then your commit limit is 2GB. If the committed bytes peak never even gets close to 2GB over the course of the server doing its job, then you can safely drop the minimum page file size accordingly. You of course want to allow for some buffer for workload increases, but that approach seems to work pretty well and can keep the page file nice and tidy. I'd be interested to hear if anyone finds something different, but this has worked pretty well for me.
Darren -----Original Message----- From: Costanzo, Ray [mailto:[EMAIL PROTECTED] Sent: Thursday, August 14, 2003 1:24 PM To: [EMAIL PROTECTED] Subject: RE: [ActiveDir] Pagefile sizes... Its that time of year again. The rule of thumb I've always heard is RAM×1.5, so 1.5 GB. Ray at work > -----Original Message----- > From: Myrick, Todd (NIH/CIT) [mailto:[EMAIL PROTECTED] > > So you have a Gig of ram on a DC, what do you all set the > pagefile size to? > Memory +11 MB? > > Like to hear your feedback. ********************************************************************************************************** The information contained in this e-mail message is intended only for the personal and confidential use of the recipient(s) named above. Distribution, publication, or retransmission of this message is strictly prohibited. This message may be a bank to client communication and as such is priviliged and confidential. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. The sender of this e-mail specifically "opts-out" of the Electronic Signatures and Global and National Commerce Act (E-Sign) and any and all similar state and federal acts. Accordingly, but without limitation, any and all documents, contracts, and ageements must contain a handwritten signature of the sender to be legal, valid, and enforceable. ********************************************************************************************************** List info : http://www.activedir.org/mail_list.htm List FAQ : http://www.activedir.org/list_faq.htm List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/ List info : http://www.activedir.org/mail_list.htm List FAQ : http://www.activedir.org/list_faq.htm List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/
