On Mon, 3 Nov 2008 18:58:18 +1100, Peter Jeremy <[EMAIL PROTECTED]> wrote: > On 2008-Nov-03 00:34:47 +0100, Ivan Voras <[EMAIL PROTECTED]> wrote: >>2008/10/31 Giorgos Keramidas <[EMAIL PROTECTED]>: >>The difference between the best and the worst is 247 context switches >>(total, not per second). >> >>> It looks like it's probably worth pushing the limit up to 8 MB when we >>> have lots of memory :) >> >>Yes, it's an improvement, but who will ever notice? :) > > Note that you will eventually hit a limit and start getting worse > performace: Once the buffer size exceeds the available free RAM > then cp/cat will start eating into inactive pages or (worse) active > pages for other processes.
Yes, that's a possibility. Ivan is right that shaving 1-2 hundred more context _total_ context switches may be a small gain for the extra cost in buffer memory :) _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "[EMAIL PROTECTED]"
