Wednesday, March 13, 2002, 5:58:08 PM, you wrote:
RvR> That would be a bit premature since this part of the code
RvR> hasn't been touched by -rmap ;)
RvR> It is something that still needs fixing, though.
:)
The most upsetting thing is the followings:
0 2 0 210736 19472 2000 733188 216 0 5068 2 382 340 4 2 94
0 2 0 210424 20108 1860 729596 219 0 4732 0 319 352 4 1 96
0 2 0 210216 19652 1616 727280 254 0 4718 10 313 298 3 4 93
1 1 0 209756 19988 1744 723940 285 0 4523 14 313 197 6 6 88
0 2 0 209700 20096 1904 722236 223 0 4485 15 307 265 7 5 88
Note some pages coming up from swap.
This is vmstat exactly corresponding to doing read via mmap. So it
looks like current VM preforms in come cases to swap out pages from
mapped files rather then discarding them :(
This of course reduces performance on sequential IO :(
-- Best regards, Peter mailto:pz@spylog.ru- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/