| Rich Freeman on 16 Apr 2015 07:20:06 -0700 |
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| Re: [PLUG] swappiness and ssd |
On Thu, Apr 16, 2015 at 10:01 AM, K.S. Bhaskar <bhaskar@bhaskars.com> wrote: > The default swappiness on Ubuntu systems is 60, and presumably takes into > consideration the relative performance of writes to and reads from the swap > file / partition. The ratio of write performance to read performance would > be higher for SSDs than rotating media, since SSD reads are truly random > whereas writes are in pages (in rotating media, seek and latency times would > tend to apply to both). Therefore, it seems to me that if swap is located > on SSD, we should increase swappiness, to encourage less frequently used > pages to be written out, since they can be brought back in very fast when > needed. Does that seem reasonable or am I missing something? Thanks. That completely makes sense, though keep in mind that swap on SSD is likely to increase wear. -- Rich ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug