"David S. Miller" <[email protected]> writes:
>
> Not true, if this check does not pass, tp->ucopy.task is
> never set, therefore prequeue processing is never performed.
Oh well, here goes my nice theory :)
>
> This test must pass the first time, when both tp->ucopy.task
> and user_recv are both NULL, in order for prequeue processing
> to occur at all.
>
> So his change did totally disable prequeue.
Then probably his test was latency bound somehow, but normally
that should not affect system time, just wall time.
I would perhaps compare context switch numbers and netstat -s
output between the different runs and see if anything pops out.
-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]