raid 1 and high load average
- by melocoton
i have a server with high load average, I think the problem is the raid 1.
cat /proc/mdstat Personalities : [raid1] md0 : active raid1 sdb1[1] sda1[0]
256896 blocks [2/2] [UU]
md3 : active raid1 sdb3[1] sda3[0]
2562240 blocks [2/2] [UU]
md4 : active raid1 sdb5[1] sda5[0]
958566272 blocks [2/2] [UU]
md1 : active raid1 sdb2[1] sda2[0]
15366080 blocks [2/2] [UU]
model name : Intel(R) Core(TM)2
Duo CPU E8400 @ 3.00GHz
Linux 2.6.18-164.6.1.el5.centos.plus (local) 04/19/2010
avg-cpu: %user %nice %system %iowait %steal %idle
17.37 0.01 6.02 26.17 0.00 50.43
Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 61.09 562.65 893.73 1557214 2473546
sda1 0.01 0.27 0.02 751 42
sda2 6.11 195.50 169.78 541075 469888
sda3 0.01 0.23 0.00 641 0
sda4 0.00 0.01 0.00 18 0
sda5 54.96 366.54 723.94 1014449 2003616
sdb 54.40 433.22 893.73 1199015 2473546
sdb1 0.01 0.16 0.02 436 42
sdb2 5.31 169.00 169.78 467729 469888
sdb3 0.01 0.31 0.00 865 0
sdb4 0.00 0.00 0.00 10 0
sdb5 49.05 263.65 723.94 729695 2003616
md1 29.96 364.39 166.68 1008498 461312
md4 124.15 630.07 713.28 1743822 1974112
md3 0.05 0.43 0.00 1192 0
md0 0.04 0.32 0.00 872 10
dm-0 7.96 83.29 23.02 230530 63720
dm-1 3.67 51.81 2.73 143394 7560
dm-2 7.63 67.76 27.35 187546 75696
dm-3 8.20 134.60 14.02 372514 38792
dm-4 5.90 10.66 39.35 29498 108912
dm-5 17.39 24.52 121.79 67850 337080
dm-6 27.19 229.60 139.89 635442 387168
dm-7 0.14 1.07 0.28 2970 776
dm-8 25.84 4.23 202.89 11698 561536
dm-9 14.77 8.38 112.35 23202 310960
dm-10 5.29 12.78 29.55 35376 81784
dm-11 0.16 1.25 0.05 3450 128
the server runs lvm in the md4
