It looks like the delays are coming from the usleep line in send_ping(); this looks like it was put in there to do some network/cpu throttling, which would definitely make the bbtest-net duration longer, but I'm not sure yet why it is affecting the icmp return times.

Running hobbitping with the flag "--max-pps=10000000" seems to fix things.

e

-----Original Message----- From: Schwimmer, Eric E *HS [mailto:EES2Y at hscmail.mcc.virginia.edu] Sent: Monday, August 28, 2006 9:49 AM To: hobbit at hswn.dk Subject: RE: [hobbit] Hobbitping/fping behaviour

I have the same problem after upgrading to 4.2.0, but I reverted to the version of hobbitping that was beta tested under 4.1.2p1, and both my ping times and bbtest-net durations dropped considerably (1522 hosts pinged in 17 seconds with the old hobbitping, down from 55 seconds with the new hobbitping).

A diff against the two versions reveals quite a few changes that were made; I have been extremely pleased with the first version so I'll stick with that for a while longer. I'll try running the new version through gprof, but I am not as skilled at these things as Henrik :)

e

-----Original Message----- From: Rob MacGregor [mailto:rob.macgregor at gmail.com] Sent: Friday, August 25, 2006 2:26 AM To: hobbit at hswn.dk Subject: Re: [hobbit] Hobbitping/fping behaviour

On 8/24/06, GALLIOT Guillaume <Guillaume.GALLIOT at but.fr> wrote:

Hello,

I have updated my hobbit installation from 4.1.2 to 4.2.0 The new hobbitping gives different results in the web interface (about 40ms latency on a local network) than fping (0.15 ms),i tried to reproduce these results with ping,fping & hobbitping but they give me same results on command line (0.15ms)

fping -e msrv999lno001 msrv999lno001 is alive (0.16 ms)

PING msrv999lno001 (10.0.4.173) 56(84) bytes of data. 64 bytes from msrv999lno001 (10.0.4.173): icmp_seq=0 ttl=64 time=0.126 ms 64 bytes from msrv999lno001 (10.0.4.173): icmp_seq=1 ttl=64 time=0.113 ms

/usr/lib/hobbit/server/bin/hobbitping 10.0.4.173 10.0.4.173 is alive (0.18 ms)

In the web interface I get 44 ms

I reverted to fping and results are now the same on command line and web interface.

Does anyone has the same issue ?

Yes, I saw exactly the same - hobbitping used by hobbit had a delay of tens of ms, used on the command line had a delay of fractions of an ms.

-- Please keep list traffic on the list.

Rob MacGregor Whoever fights monsters should see to it that in the process he doesn't become a monster. Friedrich Nietzsche

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