Hi folks
I ran oprofile on iet for a while and got some results. iet is run on a
dual xeon and export scsi disk to ini. io were performed concurrently
via 2 sessions. all results attached.
no matter read or write, the copy_user_generic is hit most. not sure if
this is just because iet is a data mover application, or because this
file io interface is not that efficient? do you think the mmap io
interface in stgt will save this copy?
Ming
olog-iet-rd
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olog-iet-w
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olog-systemwide-read
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olog-systemwide-wr
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olog-with-source-wr
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