[Disksim-users] Re: Write throughput

ll2 at rice.edu ll2 at rice.edu
Sun Aug 26 13:19:58 EDT 2007



Hi, Youngjae :

Write usually is slower than read, if you use write through, not write back.
Even you use write back, if the request rate is too high, the cache is always
filled up and the write is still slower than read. You can set up a simple
experiment to have a try in DiskSim.

Thus the throughput of read is higher than write. You can see that the company
usually use the read throughput of the disk as the maximum throughput, not
write throughput.

So, I think that it makes sense that the write throughput is smaller than read.

Lanyue Lu



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