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Incorrect results reported when pinging multiple hosts #97

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karlism opened this issue May 25, 2016 · 2 comments
Closed

Incorrect results reported when pinging multiple hosts #97

karlism opened this issue May 25, 2016 · 2 comments
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@karlism
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karlism commented May 25, 2016 •
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Hello,

Incorrect number of transmitted and received packets is sometimes reported, when running fping with "-l" and "-Q" options, especially when latency to some of the hosts is big.

Here's an example fping output while pinging multiple hosts:
$ /tmp/fping-3.13/src/fping -v
fping: Version 3.13
fping: comments to david@schweikert.ch
$ /tmp/fping-3.13/src/fping -Q 10 -l -D -f /tmp/pinghosts
[11:15:58]
hkg-host01 : xmt/rcv/%loss = 9/8/11%, min/avg/max = 307/307/307
hkg-host02 : xmt/rcv/%loss = 9/8/11%, min/avg/max = 307/307/307
127.0.0.1 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.2 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.06
127.0.0.3 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.06
127.0.0.4 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.06
127.0.0.5 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.05/0.06
127.0.0.6 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.7 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.8 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.06
127.0.0.9 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.05
127.0.0.10 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.11 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.12 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.13 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.14 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.15 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.16 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.04/0.05/0.07
127.0.0.17 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.18 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.04/0.05/0.06
127.0.0.19 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.20 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.04/0.04/0.05
mlt-host01 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 83.1/83.2/83.3
mlt-host02 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 83.2/83.3/84.2
127.0.0.21 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.22 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.04/0.05/0.06
127.0.0.23 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.24 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.25 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.26 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.27 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.06
127.0.0.28 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.06
127.0.0.29 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.30 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.31 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.32 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.06
127.0.0.33 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.05
127.0.0.34 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.09
127.0.0.35 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.05/0.06
127.0.0.36 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.37 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.05
127.0.0.38 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.39 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.05/0.08
127.0.0.40 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.05
127.0.0.41 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.05/0.08
127.0.0.42 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.06/0.12
[11:16:08]
hkg-host01 : xmt/rcv/%return = 8/9/112%, min/avg/max = 307/307/308
hkg-host02 : xmt/rcv/%return = 8/9/112%, min/avg/max = 307/307/307
127.0.0.1 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.2 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.09
127.0.0.3 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.4 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.5 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.05/0.13
127.0.0.6 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.03/0.05
127.0.0.7 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.03/0.05
127.0.0.8 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.9 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.04/0.04/0.06
127.0.0.10 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.03/0.05
127.0.0.11 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.12 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.05/0.13
127.0.0.13 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.02/0.04/0.06
127.0.0.14 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.03/0.05
127.0.0.15 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.16 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.17 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.18 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.02/0.03/0.05
127.0.0.19 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.20 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.05
mlt-host01 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 83.2/83.8/87.3
mlt-host02 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 83.2/83.3/83.4
127.0.0.21 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.06
127.0.0.22 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.07
127.0.0.23 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.05/0.11
127.0.0.24 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.06
127.0.0.25 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.05
127.0.0.26 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.02/0.04/0.09
127.0.0.27 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.28 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.29 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.05
127.0.0.30 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.12
127.0.0.31 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.05/0.15
127.0.0.32 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.07
127.0.0.33 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.34 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.06
127.0.0.35 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.36 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.37 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.04/0.04/0.05
127.0.0.38 : xmt/rcv/%loss = 9/9/0%, min/avg/max = 0.03/0.05/0.08
127.0.0.39 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.04/0.04/0.06
127.0.0.40 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.04/0.05
127.0.0.41 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.04/0.04/0.06
127.0.0.42 : xmt/rcv/%loss = 8/8/0%, min/avg/max = 0.03/0.03/0.04

If 127.0.0.0/8 test hosts are removed from the list, then fping behaves as expected.
@schweikert schweikert added the bug label Sep 27, 2016
@schweikert schweikert mentioned this issue Nov 1, 2016
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@schweikert
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This a bit of a conceptual problem because of the fact that there are various loops/timers involved. See also the discussion in #105.
The proper solution would be making sure that probes sent shortly before the report interval are only used for the next report, but this probably requires substantial refactoring.

@schweikert
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Anyway, could you test with the current develop branch and with parameters like -p 1007 -Q 10

schweikert added a commit that referenced this issue Nov 1, 2016
@schweikert
another fix for #97 (fixes #97)
ea37408
@schweikert schweikert mentioned this issue Jul 26, 2020
Merged
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@schweikert @karlism