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    SubjectRe: Too much free memory (not used for FS cache)
    On 03/15/2012 09:09 PM, Jiri Slaby wrote:
    > Hi,
    >
    > since today's -next (20120315), the MM/VFS system is very sluggish.
    > Especially when committing, diffing and similar with git. I still have
    > 2G of 6G of memory free. But with each commit I have to wait for git to
    > fetch all data from disk.
    >
    > I'm using ext4 on a raid for the partition with git kernel repository if
    > that matters.
    >
    > Any idea what that could be?

    Please ignore this. It's not as easy as that. It doesn't wait for IO and
    needs more investigation...

    > nr_free_pages 555469
    > nr_inactive_anon 16787
    > nr_active_anon 414439
    > nr_inactive_file 315585
    > nr_active_file 137446
    > nr_unevictable 0
    > nr_mlock 0
    > nr_anon_pages 277729
    > nr_mapped 95971
    > nr_file_pages 524644
    > nr_dirty 11
    > nr_writeback 0
    > nr_slab_reclaimable 35548
    > nr_slab_unreclaimable 7450
    > nr_page_table_pages 11493
    > nr_kernel_stack 464
    > nr_unstable 0
    > nr_bounce 0
    > nr_vmscan_write 0
    > nr_vmscan_immediate_reclaim 0
    > nr_writeback_temp 0
    > nr_isolated_anon 0
    > nr_isolated_file 0
    > nr_shmem 71614
    > nr_dirtied 1165398
    > nr_written 1147058
    > nr_anon_transparent_hugepages 160
    > nr_dirty_threshold 97608
    > nr_dirty_background_threshold 48804
    > pgpgin 2446144
    > pgpgout 4844237
    > pswpin 0
    > pswpout 0
    > pgalloc_dma 0
    > pgalloc_dma32 21764611
    > pgalloc_normal 38307626
    > pgalloc_movable 0
    > pgfree 60640227
    > pgactivate 913299
    > pgdeactivate 109336
    > pgfault 51012433
    > pgmajfault 8476
    > pgrefill_dma 0
    > pgrefill_dma32 79208
    > pgrefill_normal 41244
    > pgrefill_movable 0
    > pgsteal_dma 0
    > pgsteal_dma32 162966
    > pgsteal_normal 185373
    > pgsteal_movable 0
    > pgscan_kswapd_dma 0
    > pgscan_kswapd_dma32 162559
    > pgscan_kswapd_normal 215360
    > pgscan_kswapd_movable 0
    > pgscan_direct_dma 0
    > pgscan_direct_dma32 1624
    > pgscan_direct_normal 3927
    > pgscan_direct_movable 0
    > pginodesteal 4
    > slabs_scanned 102400
    > kswapd_steal 342881
    > kswapd_inodesteal 756
    > kswapd_low_wmark_hit_quickly 0
    > kswapd_high_wmark_hit_quickly 119
    > kswapd_skip_congestion_wait 0
    > pageoutrun 3493
    > allocstall 5
    > pgrotated 240
    > compact_blocks_moved 432
    > compact_pages_moved 10699
    > compact_pagemigrate_failed 0
    > compact_stall 14
    > compact_fail 5
    > compact_success 9
    > htlb_buddy_alloc_success 0
    > htlb_buddy_alloc_fail 0
    > unevictable_pgs_culled 327
    > unevictable_pgs_scanned 0
    > unevictable_pgs_rescued 2618
    > unevictable_pgs_mlocked 2618
    > unevictable_pgs_munlocked 2618
    > unevictable_pgs_cleared 0
    > unevictable_pgs_stranded 0
    > unevictable_pgs_mlockfreed 0
    > thp_fault_alloc 13147
    > thp_fault_fallback 0
    > thp_collapse_alloc 3543
    > thp_collapse_alloc_failed 0
    > thp_split 183
    >
    > thanks,


    --
    js
    suse labs


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