/proc/vmstat 2.5.61cfq2   2.5.61virgin  cfq2-512(240)    cfq2-512
-----------------------------------------------------------------
nr_dirty             20             13             9           12
nr_writeback          0              0             0            0
nr_pagecache       7308           7593          7176         7737
nr_page_table_pages  85             85            85           85
nr_reverse_maps    3229           3198          3254         3159
nr_mapped           599            599           608          583
nr_slab            1203           1184          1169         1237
pgpgin          1767432        1911614       1758501      1775402
pgpgout         1606743        1746497       1595920      1654366
pswpin           311297         338436        307811       311515
pswpout          371161         406675        369132       383302
pgalloc         3037961        3070811       3030482      3020966
pgfree          3060825        3093420       3053524      3043355
pgactivate       142329         135616        134968       136655
pgdeactivate     514672         507026        481156       501111
pgfault         4896877        4928530       4891987      4913594
pgmajfault        74342          84476         74058        82857
pgscan          2751953        5328260       3250880      3797919
pgrefill        1821561        1972715       1896119      2057461
pgsteal          528014         575301        528513       529011
pginodesteal          0              0             0            0
kswapd_steal     380282         522126        405078       410382
kswapd_inodesteal  7010           7132          6704         6829
pageoutrun         1107           1956          1263         1259
allocstall         3472           1238          2865         2782
pgrotated        358243         413450        365914       387277