Hi all
With a four core, four twisted http server processes (nevow/athena on
top), dual 100 MBps interfaces, all four cores showing CPU loads of 50%
plus, I observe the following degradation in the network traffic with
tcpdump:
- 'TCP checksum incorrect' raising to almost 25% of all packets observed
from one client IP
- TCP Ack'ed lost segment raising to 0.5% of all packets observed
This was with poll reactor on FreeBSD 7.0
- Would it be of any help to switch to kqueue in this case?
- If so, is the documentation about using and patching PyKQueue-1.3 as
given in
http://twistedmatrix.com/documents/8.2.0/api/twisted.internet.kqreactor.html
correct and up to date, given that on
http://people.freebsd.org/~dwhite/PyKQueue/
the actual version mentioned is 1.2
Thanks in advance, Werner
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