Messages in this thread | | | Date | Wed, 28 Apr 2004 15:39:10 -0500 (CDT) | From | Brent Cook <> | Subject | Re: pdflush eating a lot of CPU on heavy NFS I/O |
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> Could you please capture the contents of /proc/meminfo and /proc/vmstats > when it's happening? > > Thanks. >
Here is the top of top for one machine:
15:36:55 up 7:09, 1 user, load average: 1.00, 1.00, 1.00 48 processes: 46 sleeping, 2 running, 0 zombie, 0 stopped CPU states: 0.1% user 99.8% system 0.0% nice 0.0% iowait 0.0% idle Mem: 256992k av, 117644k used, 139348k free, 0k shrd, 36464k buff 50968k active, 51592k inactive Swap: 514040k av, 0k used, 514040k free 61644k cached
PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND 7 root 25 0 0 0 0 RW 99.4 0.0 415:26 0 pdflush
Here are memory stats for the same machine. The other machine's stats are similar; there doesn't appear to be anything out of the ordinary and its not even touching swap if these numbers are to be believed.
busterb@snowball2:~$ cat /proc/meminfo MemTotal: 256992 kB MemFree: 139700 kB Buffers: 36464 kB Cached: 61516 kB SwapCached: 0 kB Active: 50536 kB Inactive: 51672 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 256992 kB LowFree: 139700 kB SwapTotal: 514040 kB SwapFree: 514040 kB Dirty: 1876 kB Writeback: 0 kB Mapped: 8552 kB Slab: 10924 kB Committed_AS: 14612 kB PageTables: 356 kB VmallocTotal: 778164 kB VmallocUsed: 2936 kB VmallocChunk: 774708 kB
busterb@snowball2:~$ cat /proc/vmstat nr_dirty 469 nr_writeback 0 nr_unstable 0 nr_page_table_pages 89 nr_mapped 2138 nr_slab 2730 pgpgin 79849 pgpgout 121656 pswpin 0 pswpout 0 pgalloc_high 0 pgalloc_normal 1812796 pgalloc_dma 18991 pgfree 1866775 pgactivate 55529 pgdeactivate 14634 pgfault 3622942 pgmajfault 2322 pgrefill_high 0 pgrefill_normal 16726 pgrefill_dma 49791 pgsteal_high 0 pgsteal_normal 11781 pgsteal_dma 203 pgscan_kswapd_high 0 pgscan_kswapd_normal 10065 pgscan_kswapd_dma 231 pgscan_direct_high 0 pgscan_direct_normal 2310 pgscan_direct_dma 0 pginodesteal 0 slabs_scanned 4349 kswapd_steal 9758 kswapd_inodesteal 0 pageoutrun 32 allocstall 35 pgrotated 0
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