On Fri, Dec 11, 2015 at 5:24 PM, Reginald Beardsley via openindiana-discuss <openindiana-discuss@openindiana.org> wrote:
> My long standing rule is swap = 8 x core. Hmm. I could see that working for small systems, but I have some machines where that would require dedicating a terabyte of disk to swap. That doesn't seem reasonable, especially when the root partition is on an SSD that may itself not be much bigger than core RAM. It also never really made sense to me why you'd increase swap when you add more RAM. It seems like a system with more RAM would need *less* swap. The recommendation for a while was 2 x core, but I think that stemmed partly from Linux using a virtual memory implementation at the time that couldn't swap properly if swap was smaller than that. These rules of thumb tend to start for logical reasons but then carry on as cargo cults long after -- sort of like how I still see people setting "rsize=32768,wsize=32768" on NFS mounts to "improve performance." :) -- D. Brodbeck System Administrator, Linguistics University of Washington GPG key fingerprint: 0DB7 4B50 8910 DBC5 B510 79C4 3970 2BC3 2078 D875 _______________________________________________ openindiana-discuss mailing list openindiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
