Doug Ledford wrote:
Well, first I was thinking of files in the few hundreds of megabytes
each to gigabytes each, and when they are streamed, they are streamed at
a rate much lower than the full speed of the array, but still at a fast
rate. How parallel the reads are then would tend to be a function of
chunk size versus streaming rate.
Ahh, I see now. Thanks for explanation.
I wonder though, if setting large readahead would help, if you used larger
chunk size. Assuming other options are not possible - i.e. streaming from
larger buffer, while reading to it in a full stripe width at least.
I'm not familiar with the benchmark you are referring to.
I was thinking about
http://www.mail-archive.com/linux-raid@xxxxxxxxxxxxxxx/msg08461.html
with small discussion that happend after that.
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