Hi all,

I've just set up some zones on a V440 to host various applications. I've 
noticed extremely poor performance untarring various things, characterised 
by masses of very small io operations:

device    r/s    w/s   kr/s   kw/s wait actv  svc_t  %w  %b 
sd0       3.4  162.8   28.8   90.7  0.0  1.0    6.3   0  99 
sd1       0.0    0.0    0.0    0.0  0.0  0.0    0.0   0   0 
sd3       0.0    0.0    0.0    0.0  0.0  0.0    0.0   0   0 
nfs23     0.0    0.0    0.0    0.0  0.0  0.0    0.0   0   0 
                 extended device statistics 
device    r/s    w/s   kr/s   kw/s wait actv  svc_t  %w  %b 
sd0      19.6  148.0   82.6  168.3  0.0  1.0    6.0   0  99 
sd1       0.0    0.0    0.0    0.0  0.0  0.0    0.0   0   0 
sd3       0.0    0.0    0.0    0.0  0.0  0.0    0.0   0   0 
nfs23     0.0    0.0    0.0    0.0  0.0  0.0    0.0   0   0 
                 extended device statistics 
device    r/s    w/s   kr/s   kw/s wait actv  svc_t  %w  %b 
sd0       2.4  163.0   17.8  100.2  0.0  1.1    7.0   0  99 
sd1       0.0    0.0    0.0    0.0  0.0  0.0    0.0   0   0 
sd3       0.0    0.0    0.0    0.0  0.0  0.0    0.0   0   0 
nfs23     0.0    0.0    0.0    0.0  0.0  0.0    0.0   0   0 

Note that this disk is flat out writing ~100 KB/sec, using what appear to 
be 512b or 1k writes. The identical operation from the same tarball gets 
around 15MB/sec in the global zone. What on earth is going on here? How do 
I fix it?

This is a whole-root zone based on a UFS file system. I'm using Sol10 
0508.


Regards,

Charles Meo
Infrastructure Team Leader
LTX Pty Ltd 
Phone: 03 8699 7900 
Mobile: 0409 258 471 
Email: charles....@ltx.com.au
Website: www.ltx.com.au



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