> Maybe an I/O scheduler makes sense as a solution to this problem?  Or
> would that be Too Much Effort?  If so, another solution might be to
> restrict the percentage of available buffers a given process can use
> for read/write...  Keep it small enough, and you wouldn't need to wait
> seconds for dd if=/dev/zero to flush all of its buffers.

seconds sound cool. but does it mean per-process queues???

and what if 2 processes writes to same file/place in file?

there is never a case that 2 processes executes on 1 CPU in same time, but
it is possible that 2 processes will schedule similar writes


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Where do you think you go today?