Stefan Lambrev wrote:
Greetings,
Kris Kennaway wrote:
Kris Kennaway wrote:
Fixing all of the above I can send at about 13MB/sec (timecounter is
not relevant any more). The CPU is spending about 75% of the time
in the kernel, so
that is the next place to look. [hit send too soon]
Actually 15MB/sec once I disable all kernel debugging. This is
identical to Linux 2.6.24 on the same hardware. The patch I use to
fix hping brain-damage is attached.
Kris
Indeed this patch highly improve results (x2) under FreeBSD. On my
hardware the max speeds under FreeBSD i still little slower compared to
Linux (something like 19 vs 19.5 MB/s)
but the speed is quite more stable under FreeBSD (under linux the
average speed seems slower)
I didn't tested the patch under linux but will do soon.
Thanks for the help :)
BTW 262144 is little high as this match the default value in FreeBSD, I
tested with twice smaller buffer and do not see performance lost.
Kris if you do not mind I'll write to hping developers to adopt this
patch, and if no response from them I can try to reach the port
maintainer, so we have this patched in ports?
My patch is a bit crude, because I didnt have the courage to digest the
entire structure of the code, so it may be slightly wrong with respect
to other operating modes (the #if 0 part is wrong, but that code needs
to be rewritten). Some version of it should be included in the software,
but perhaps after renaming the patch file ;-)
Kris
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