Thanks. How much memory should I have? This machine wont take more than 3GB,
best I can get is one that takes up to 8GB. Anyway, I'm the only user, is it
really necessary?
Tried COMSTAR as you suggested, got the same speed and behavior as iscsitadm
with dsk instead of rdsk. This is what writes look like:
[r...@solaris:~]# zpool iostat 3
capacity operations bandwidth
pool used avail read write read write
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 30 263 238K 2.25M
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 0 6.42K 0 51.0M
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 0 0 0 0
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 0 0 2.64K 0
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 0 8.13K 0 64.6M
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 0 0 2.64K 0
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 0 0 2.65K 0
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 0 8.23K 0 65.4M
---------- ----- ----- ----- ----- ----- -----
if I disable writeback, it looks like this:
tera 2.13T 1.49T 0 44 0 2.89M
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 0 35 2.66K 2.29M
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 0 46 0 3.01M
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 0 22 0 1.48M
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 0 47 0 3.06M
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 0 22 0 1.45M
---------- ----- ----- ----- ----- ----- -----
tera 2.13T 1.49T 0 40 0 2.60M
---------- ----- ----- ----- ----- ----- -----
So why is it so "bursty"? ZIL maybe? Do I have a bottleneck somewhere?
Thanks,
Hernan
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