Hi,
take a look at the following output of iostat -xzn 5:
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
119.4 0.0 11014.2 0.0 0.0 1.7 0.0 13.9 0 96 md/d10
59.6 0.0 5529.4 0.0 0.0 0.9 0.0 14.4 0 72 md/d11
59.8 0.0 5484.8 0.0 0.0 0.8 0.0 13.4 0 70 md/d12
0.4 169.2 3.2 11143.8 0.0 1.5 0.0 8.6 0 52 md/d20
0.2 169.2 1.6 11143.8 0.0 1.1 0.0 6.5 0 38 md/d21
0.2 169.2 1.6 11143.8 0.0 1.0 0.0 6.2 0 38 md/d22
59.8 173.2 5531.0 11145.8 0.0 2.0 0.0 8.4 0 77 c0t0d0
60.0 169.2 5486.4 11143.8 0.0 1.8 0.0 8.0 0 78 c13t0d0
d10 consists of d11 and d12
d20 consists of d21 and d22
So how is it possible that reads of d11,d12 sum up in d10, but writes of d20,
d21, and d22 are all equal. Is this a bug?
This occurred during 'lumake -n slice1' on:
$ uname -a
SunOS azalin 5.10 Generic_127111-01 sun4u sparc SUNW,Sun-Blade-2500
Any comments?
- Thomas
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