"global" TCP_NODELAY?

Ivan Voras ivoras at freebsd.org
Mon Oct 12 11:42:35 UTC 2009

Bernd Walter wrote:
> On Mon, Oct 12, 2009 at 01:27:28PM +0200, Ivan Voras wrote:
>> I'm trying to work around some extreme brain damageness in PHP (yes, it 
>> sucks) which doesn't have a way to set TCP_NODELAY on stream sockets so 
>> I'm wondering what are my other options? Is there a way to set 
>> TCP_NODELAY system-wide?
> net.inet.tcp.delayed_ack
> net.inet.tcp.delacktime
> Depending on your application it may be sufficient to just reduce the
> time.

Really? Doesn't TCP_NODELAY (Nagle's algorithm) work on buffers to be 
sent rather than on ACKs on received data?

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