Thanks for that info. I validated with a simple experiment on a Niagara
machine, by viewing 'mpstat' that no more than 2-3 threads were being saturated
by my large block sequential write test.
This message posted from opensolaris.org
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zfs-discuss
The experiment was on a V240. Throughput wasn't the issue in our test; CPU
utilization seemed to drop by approx. 50% after turning checksum off. The
concern was in potentially running out of CPU horsepower to support multiple
parallel sequential writes.
This message posted from opensolaris.o
With the CPU overhead imposed in checksum of blocks by ZFS, on a large
sequential write test, the CPU was heavily loaded in a test that I ran. By
turning off the checksum, the CPU load was greatly reduced. Obviously, this
caused a tradeoff in reliability for CPU cycles.
Would the logic behind Z
