on 28/02/2012 11:43 Wojciech Puchar said the following: >>> +++ swap_pager.c 2012-02-25 13:19:51.000000000 +0100 >>> @@ -119,7 +119,7 @@ >>> * The 32-page limit is due to the radix code (kern/subr_blist.c). >>> */ >>> #ifndef MAX_PAGEOUT_CLUSTER >>> -#define MAX_PAGEOUT_CLUSTER 16 >>> +#define MAX_PAGEOUT_CLUSTER 256 >>> #endif >> [snip] >>> but swap_pager.c patch seems not to work. i observe 64kB pageouts, no more. >>> >>> what is wrong in it? >> >> Could there be a problem because of what the MAX_PAGEOUT_CLUSTER comment >> says? > > right. but still 32 pages is 128kB, but i see 64kB I/Os in systat/vmstat
Right, but the comment says to not define MAX_PAGEOUT_CLUSTER to a value greater than 32, but you did that. So all bets could be off unless you examined the code and know exactly what should happen in this case. -- Andriy Gapon _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
