topic Re: Source Quench in Operating System - HP-UX

Source Quench

Carlos Bezares — Wed, 04 Jun 2003 22:25:56 GMT

How can i disable or allow "source Quench"??

Re: Source Quench

steven Burgess_2 — Wed, 04 Jun 2003 22:33:09 GMT

Carlos

You don't actually disable or allow source quench, they are a condition

Source Quench messages are sent when the destination is unable to process traffic as fast as the source is sending it. The Source Quench ICMP tells the source to cut back
the rate at which it is sending data. The destination will continue to generate
Source Quench ICMPs until the source is sending at an acceptable speed.

HTH

Steve

Re: Source Quench

Michael Tully — Wed, 04 Jun 2003 22:38:57 GMT

Hi,

You don't actually disable it, but this is how to remove the messages from appearing.

# ndd -set /dev/ip ip_send_source_quench 0

To disable it permanently update the /etc/rc.config.d/nddconf file with this:

TRANSPORT_NAME[X]=ip
NDD_NAME[X]=ip_send_source_quench
NDD_VALUE[X]=0

Where X is the next logical numerical sequence in a table of values, with X starting at 0

Regards
Michael
"When I have trouble spelling, it's called fat finger syndrome"

Re: Source Quench

Todd Whitcher — Thu, 05 Jun 2003 10:24:16 GMT

Hi,

If the message is originating from the HP there was one known issue w/ rpcd and sock_raw socket which was solved in PHSS_17810. Check to see if you have that patch or a later version so that you are not having this issue.

Settting that ndd parameter mentioned above will also stop the HP from sending the source quench, but the patch is required if you still see them generated.

PHSS_17810 has been superceded by PHSS_27962

s700_800 11.00 HP DCE/9000 1.7 Runtime cumulative patch

Cheers