Hi everybody,
I'm trying to get the maximum transfer datarate from several SCSI disks
from a user application. I think the problem now is that all the transfers
go through the buffer cache, which implies a lot of memory copy and this
bounds the maximum I/O. It should be possible to access the SCSI disks
bypassing the buffer cache of the block devices.
Is there any easy way to do this ?
My first option would be to use some special flag when openning the file
to avoid going through the buffer cache. But I have not found anything
similar.
If not, I would have to modify the sd.c to to perform direct transfers
without using the buffer cache.
Bye,
Mateu Batle
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