From: henrik at hswn.dk (Henrik Stoerner) Reply-To: hobbit at hswn.dk To: hobbit at hswn.dk 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
42.444355Is 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
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