> For each active, inactive and unevictable lru list, we would like to count the
> number of dirty file pages. This becomes useful when we start monitoring and
> tracking the efficiency of page reclaim path while doing some heavy IO workloads.
>
> We export the new accounting now through global proc/meminfo as well as per-node
> meminfo. Ideally, the accounting should work as:
linux/Documentation/vm/page-types.c ?
% sudo ~/bin/page-types
flags page-count MB symbolic-flags long-symbolic-flags
0x0000000000000000 76660 299 __________________________________
0x0000000000000024 33920 132 __R__l____________________________ referenced,lru
0x0000000000000028 23774 92 ___U_l____________________________ uptodate,lru
0x0001000000000028 378 1 ___U_l________________________I___ uptodate,lru,readahead
0x000000000000002c 160474 626 __RU_l____________________________ referenced,uptodate,lru
0x0000000000004038 21 0 ___UDl________b___________________ uptodate,dirty,lru,swapbacked
0x000000000000003c 124491 486 __RUDl____________________________ referenced,uptodate,dirty,lru
0x000000000000403c 7 0 __RUDl________b___________________ referenced,uptodate,dirty,lru,swapbacked
0x0000000000000060 3521 13 _____lA___________________________ lru,active
0x0000000000000064 12681 49 __R__lA___________________________ referenced,lru,active
0x0000000000000068 5309 20 ___U_lA___________________________ uptodate,lru,active
0x000000000000006c 22840 89 __RU_lA___________________________ referenced,uptodate,lru,active
0x0000000000000074 60 0 __R_DlA___________________________ referenced,dirty,lru,active
0x000000000000007c 3 0 __RUDlA___________________________ referenced,uptodate,dirty,lru,active
0x0000000000000080 33810 132 _______S__________________________ slab
0x0004000000000080 179 0 _______S________________________A_ slab,slub_frozen
0x000000000000012c 7463 29 __RU_l__W_________________________ referenced,uptodate,lru,writeback
0x000000000000012d 2 0 L_RU_l__W_________________________ locked,referenced,uptodate,lru,writeback
0x0000000000000400 683 2 __________B_______________________ buddy
0x0000000000000800 16 0 ___________M______________________ mmap
0x0000000000000804 1 0 __R________M______________________ referenced,mmap
0x0000000000000828 42 0 ___U_l_____M______________________ uptodate,lru,mmap
0x000000000000082c 959 3 __RU_l_____M______________________ referenced,uptodate,lru,mmap
0x0000000000004838 4 0 ___UDl_____M__b___________________ uptodate,dirty,lru,mmap,swapbacked
0x0000000000000868 158 0 ___U_lA____M______________________ uptodate,lru,active,mmap
0x000000000000086c 3091 12 __RU_lA____M______________________ referenced,uptodate,lru,active,mmap
0x0000000000005808 2 0 ___U_______Ma_b___________________ uptodate,mmap,anonymous,swapbacked
0x0000000000005828 2702 10 ___U_l_____Ma_b___________________ uptodate,lru,mmap,anonymous,swapbacked
0x000000000000582c 22 0 __RU_l_____Ma_b___________________ referenced,uptodate,lru,mmap,anonymous,swapbacked
0x0000000000005868 8342 32 ___U_lA____Ma_b___________________ uptodate,lru,active,mmap,anonymous,swapbacked
0x000000000000586c 17 0 __RU_lA____Ma_b___________________ referenced,uptodate,lru,active,mmap,anonymous,swapbacked
total 521632 2037
That said,
ActiveDirty(file): 240KB
InactiveDirty(file): 486MB
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