Comment # 1
on bug 8721
from Stuart Kendrick
Ah, this just finished.
tshark -r pings-big.pcap -qz icmp,srt
==========================================================================
ICMP Service Response Time (SRT) Statistics (all times in ms):
Filter: <none>
Requests Replies Lost % Loss
962848 962720 128 0.0%
Minimum Maximum Mean Median SDeviation Min Frame Max Frame
0.003 570.535 5.094 0.275 24.703 27209 1606049
==========================================================================
Took 7.5 hours
I tried slicing pings-big.pcap into 50MB chunks (with a ~14MB remainder file)
and running tshark serially against them:
slice1.pcap: 18 minutes
slice2.pcap: 18 minutes
slice3.pcap: 18 minutes
slice4.pcap: 17 minutes
slice5.pcap: 1 minute
I would have predicted that running tshark against the ~220MB pings-big.pcap
would have taken the sum of the slices, i.e. 18+18+18+17+1 = 72 minutes
So, this is not a bug at all, merely unexpected non-linear performance.
I will go ahead and report it, though, just in case this seems worthy of
attention.
--sk
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