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NetBSD master CVS tree commits
thorpej
Thu Jul 30 11:14:00 PDT 1998
Update of /cvsroot/src/sbin/dump
In directory nb00:/tmp/cvs-serv9079
Modified Files:
dumprmt.c
Log Message:
Turn on TCP_NODELAY on the remote tape socket, from FreeBSD. Here is the
commit message from Bill Fenner:
Turn on TCP_NODELAY on the remote socket, to turn off sender silly window
syndrome avoidance. The combination of SWS avoidance and ack-every-other
causes low throughput if the block size divided by the MSS is odd (which
is true with the default block size and MSS).
Turning on TCP_NODELAY disables the Nagle algorithm and sender SWS avoidance.
The rdump request/response protocol can not invoke Nagle and cannot cause
SWS, so this has no negative effects.
Also, put back the code that sets the TOS to "throughput", which seems to
have been erroneously removed during the Lite-2 merge.
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