Hi,
> > So we get almost 15% of throughput drop. This was with plain "netkit
> > fptd". AFAIK, it does a simple read/write loop (not sendfile()).
We've been seeing rather variable results for TSO as well. With TSO off
netperf TCP_STREAM will hit line speed and stay there. With TSO on
some runs will hit line speed and others will be about 100Mbit/sec
slower.
> When we use TSO for non-sendfile() applications it really
> stresses memory allocations. We do these 64K+ kmalloc()'s
> for each packet we construct.
Yep we definitely noticed much more higher allocations when watching
/proc/slab. Playing around with slab tuning didnt seem to help.
Anton
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Jul 31 2003 - 22:00:39 EST