2.6 iowait

[V13]

On Tuesday 02 March 2004 16:27, Aggelos Economopoulos wrote:
> iowait state. Profanws, an etrexe kati, o xronos autos den mporei na
> apodo8ei se iowait (asxeta an kapoio process se auton ton cpu perimene
> gia i/o), kai h scheduler_tick() proxwraei sto update twn gnwstwn
> user/nice/system statistics.

Pragmati... Exontas mono disk i/o:

 Cpu0 : 15.4% us, 15.4% sy,  0.0% ni,  7.7% id, 56.7% wa,  0.0% hi,  4.8% si
 Cpu1 : 17.0% us, 17.0% sy,  0.0% ni,  8.5% id, 57.5% wa,  0.0% hi,  0.0% si

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1609 db        16   0 60568  53m  57m D 35.3 21.5   0:28.63 postmaster
 1866 root      18   0  1520  400 1368 R 19.1  0.2   0:16.44 dd

Eno an ksekiniso kai dyo progs poy kanoyn apla ena 'for(;;);' me nice:

 Cpu0 :  1.9% us,  6.5% sy, 84.3% ni,  0.0% id,  0.0% wa,  0.9% hi,  6.5% si
 Cpu1 :  2.8% us, 18.9% sy, 78.3% ni,  0.0% id,  0.0% wa,  0.0% hi,  0.0% si

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1876 v13       35  10  1364  240 1344 R 91.4  0.1   0:26.07 a
 1877 v13       35  10  1364  240 1344 R 79.2  0.1   0:20.89 a
 1866 root      18   0  1520  400 1368 D 16.0  0.2   0:30.65 dd
 1647 db        18   0 60568  52m  57m D  4.7 21.3   0:02.08 postmaster

Amesos to iowait midenizetai, asxetos poy to i/o paramenei to idio opos 
fainetai apo tin vmstat:

procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy id wa
 0  2  59668   2016  29700  71840    0   36 36232  1068 1613  2464 12 19 10 58
 2  1  59720   2016  28272  73260    0   44 36916    52 1780  3123 17 20  8 56
 0  2  59760   1864  28632  72936    0   48 36224  1088 1789  3596 19 20  7 54

 6  0  59180   2416  27816  73260    0    8 35884  4144 1644  2548 81 19  0  0
 2  2  59200   2240  28788  72108    0   28 36552  2080 1694  2765 82 18  0  0
 4  0  59240   2352  28776  72112    0   32 35944  1116 1652  2522 81 19  0  0

Thnks for the tips...

> Aggelos
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