> >> * Dennis Clarke <[EMAIL PROTECTED]> [2007-01-15 16:39]: >>> >>> I am beginning to think that ZFS is a feature of Vista because it >>> seems to eat all available RAM endlessly. >> >> There is a ZFS FAQ somewhere indicating that ZFS *appears* to hog >> memory because it uses as much as it can, but it supposedly >> relinquishes memory as soon as an app calls for it. >> >> I thought that should be pointed out, though I am not quick to accept >> it myself. How does the kernel ask ZFS processes for more memory? >> Does this mean the kernel must have specific knowledge of ZFS? If so, >> then how would linux developers pull off running ZFS via FUSE >> (http://en.wikipedia.org/wiki/FUSE_%28Linux%29)? It seems there's a >> loose end somewhere. >> >> If you run some other memory intensive processes, do you notice ZFS >> cutting them any slack? > > nothing beats a test. > > what do you suggest?
Well I logged in ( CDE not JDS ) and started FireFox and then went to watch the Sun video about the supercomputer in Japan. I have vmstat dumping data in a file. The ::memstat looks like so : $ su - Password: Sun Microsystems Inc. SunOS 5.11 snv_52 October 2007 # mdb -k Loading modules: [ unix krtld genunix specfs dtrace ufs scsi_vhci sd md ip hook neti sctp arp usba nca zfs random audiosup crypto sppp ptm nfs logindmux cpc wrsmd fcip fctl fcp ipc ] > ::memstat Page Summary Pages MB %Tot ------------ ---------------- ---------------- ---- Kernel 78516 613 69% Anon 19137 149 17% Exec and libs 5844 45 5% Page cache 4015 31 4% Free (cachelist) 2955 23 3% Free (freelist) 2609 20 2% Total 113076 883 Physical 111514 871 > # $ So there we have 5% free memory on the box. We also have 613MB used by the kernel. Doesn't mean much though .. because I am able to do things and I suspect free memory means very little with ZFS. Maybe it means .. "memory that is really doing nothing right now, if you need memory .. don't worry, the kernel will release it". my best guess Dennis _______________________________________________ opensolaris-discuss mailing list [email protected]
