Hello Wee, Friday, April 20, 2007, 5:20:00 AM, you wrote:
WYT> On 4/20/07, Robert Milkowski <[EMAIL PROTECTED]> wrote: >> You can limit how much memory zfs can use for its caching. >> WYT> Indeed, but that memory will still be locked. How can you tell the WYT> system to be "flexible" with the caching? It shouldn't be locked but in reality it can. WYT> I deem that archiving will not present a cache challenge but we will WYT> want zfs to prefetch (or do whatever magic) when staging in files. We WYT> do not want to limit ZFS's cache but we want to tell the system to WYT> prefer SAMFS's cache to ZFS's. I don't know how SAM-FS works (I've never used it) but I'm surprised that you started paging via using swap - or perhaps you meant something else. If qfs uses standard page cache perhaps increasing segmap would also help. It's still static however. By limit ZFS arc you are not disabling prefetching or any other features. First I would be most interested what exactly happened when your server started to crawl 'coz you can't "swap out" page cache or arc cache... -- Best regards, Robert mailto:[EMAIL PROTECTED] http://milek.blogspot.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
