google "evil tuning guide" and you will find it. you can throw a "zfs" into the query too, or not.
zfs will basically use as much ram as it can. see section 2.2, "limiting arc cache" On Mon, May 11, 2009 at 11:16 AM, Ross Schaulis <ross.schau...@sun.com>wrote: > > (Please reply to me directly as I am not on the ZFS alias) > > IHAC running BEA WebLogic on a T2000 with ZFS. > Here's what he's telling me..... > > - He found himself running out of memory on the T2000 (16GB) > - He rebooted his T2000 and got all his memory back > - He ran his system for a while and then did a vmstat and showed he had 10G > available. He copied what should have been ~ 5Gig to disk and immediately > re-ran vmstat and it showed he only had 2Gig memory left!!! > > My guess is that ZFS is using the system memory for cache and is not giving > it back? OR maybe ZFS will give it back when asked? Are there better > commands to run to see actual memory available? Is there a way to cap the > amount of memory being used for cache by ZFS? Or better yet is there a > tuning guide I can give to my customer to help him better understand and run > his ZFS environment? (I think there used to be an evil tuning guide...but I > have been unable to find it) > > RS > > -- > _/_/_/ _/ _/ _/ _/ |Ross Schaulis > _/ _/ _/ _/_/ _/ |Senior Systems Engineer > _/_/_/ _/ _/ _/ _/ _/ |State and Local Government > _/ _/ _/ _/ _/_/ |(877) 249-7441 office > _/_/_/ _/_/_/ _/ _/ M I C R O S Y S T E M S | > ross.schau...@sun.com > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss >
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