How to shorten the ping time ?

From: user-ce4a2c883f75@xymon.invalid (Henrik Stoerner)
Reply-To: user-ae9b8668bcde@xymon.invalid
To: user-ae9b8668bcde@xymon.invalid
Subject: Re: [hobbit] How to shorten the ping time ?
Date: Fri, 1 Sep 2006 07:36:08 +0200

On Thu, Aug 31, 2006 at 07:34:36PM -0500, T.J. Yang wrote:

I am using hobbitping and I am getting 43 seconds for 833 hosts pings.

PING test completed (833 hosts)          1157070413.072972         

42.444355

Is there a way to improve number if  parallel pings by hobbitping  ?
my test hobbit server looks very low on load avgerage.

Network tests rarely put much load on your box, they spend most of their
time waiting for the remote server to respond.

You can probably increase the max. packets/second from the default (50)
to e.g. 200 or 500. The risk in doing that is that you might overload
some of the network components along the way to the server, and ICMP
packets are among the first to be discarded if a router sees more
traffic than it can handle. So there's a higher risk of getting false
alerts the higher you go with the packet rate.

I haven't try max packet/second yet but I increase the the number concurreny 
of pings
from default 250 to 1000 and I am seeing 10 seconds improvement(not bad).

bash-3.00$ grep concurrency  hobbitlaunch.cfg
        CMD bbtest-net --report --ping --checkresponse 
--dnslog=$BBSERVERLOGS/dns.log --concurrency=1000
bash-3.00$

PING test completed (833 hosts)          1157106120.152276         32.152155

Thanks

tj

Regards,
Henrik