TCP_NODELAY is enabled at OS level

[Redington]

Hi All,

We rae facing some issue with SAP running on HP-UX 11.31.  SAP has asked to check :TCP_NODELAY is enabled at OS level"

Please advise how to check and set this parameter.

HP-UX xxxxxxx B.11.31 U ia64 1075361838 unlimited-user license
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[Laurent Menase]

Hi,

in fact enable TCP_NODELAY at os layer is usually not recommended at all

the parameter is tcp_naglim_def which should be set to 1.

This may have a real perf impact.

[Laurent Menase]

forgot to mention

it is an unsupported ndd tunable

ndd -set /dev/tcp tcp_naglim_def 1

to have it effective on next reboot add it to /etc/rc.config.d/nddconf