Don't set SO_SNDBUF on recent Windows versions that have a bigger default.
It's unnecessary to set it if the default is higher in the first place.
Furthermore, setting SO_SNDBUF disables the so-called "dynamic send
buffering" feature, which hurts performance further. This can be seen
especially when the network between the client and the server has high
latency.
Chen Huajun
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/4f33621f3f50286e607a3cdcc1f7a7d51075af95
Modified Files
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src/backend/libpq/pqcomm.c | 44 ++++++++++++++++++++++++++++++++++++++------
1 file changed, 38 insertions(+), 6 deletions(-)