Neil hello.
I have tested the overhead of linux raid0.
I used two scsi atlas maxtor disks ( 147 MB) and combined them to single
raid0 volume.
The raid is striped in 256K stripes.
I filled the raid0 up to the maximum with files over xfs file system.
I've checked the peformance of reading 60 files like that:
while need to read
for every file
read 0.5 M from file
I got 50 MB/s .
Armed with this knowledge i went and did the same test over
one disk and i got 32 MB/s .
Question:
why is this perfomance drop ?
thank you
--
Raz
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