topic Re: Default value of network interface - txqueuelen & net_dev_max_backlog in Operating System - HP-UX

Default value of network interface - txqueuelen & net_dev_max_backlog

Sajjad Premier — Fri, 10 Jun 2011 06:58:59 GMT

Hi,

Any one help me to identify default values of below parameters of network inetrfaces.

We have superdome server ia64 SD32 and hpux 11.23.

txqueuelen -- need default value in hpux 11.23 and need command to check default value

net_dev_max_backlog -- need default value in hpux 11.23 and need command to check default value

Kindly also help us to find out command to identify above parameters ?

kindly also help us to replace above default parameters ?

Your help in this regard is highly appreciated.

Thanks & Kind Regards,

Sajjad Ahmed

Re: Default value of network interface - txqueuelen & net_dev_max_backlog

Bill Hassell — Sun, 12 Jun 2011 00:24:40 GMT

> txqueuelen
> net_dev_max_backlog

These are Linux tunables, not found in HP-UX. All the network tunables for HP-UX can shown with ndd:

ndd -?

Re: Default value of network interface - txqueuelen & net_dev_max_backlog

Duncan Edmonstone — Mon, 13 Jun 2011 05:08:28 GMT

Tuning of the HP-UX IP network stack is mostly done via the ndd command - take a look at this whotepaper:

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c02020743/c02020743.pdf

HTH

Duncan

Re: Default value of network interface - txqueuelen & net_dev_max_backlog

Sajjad Premier — Mon, 13 Jun 2011 06:23:28 GMT

Hi Bill,

Thanks for your inofrmation provided.

Kindly inform us what is the equivalent parameters in hpux of these two parameters which would be tunable?

Thanks & kind Regards,

Sajjad Ahmed

Re: Default value of network interface - txqueuelen & net_dev_max_backlog

Dennis Handly — Mon, 13 Jun 2011 08:39:47 GMT

From Duncan's link, it appears that net_dev_max_backlog may be tcp_conn_request_max.
txqueuelen may be tcp_xmit_hiwater_max?