Wireshark-bugs: [Wireshark-bugs] [Bug 10798] HTTP Requests are only partially dissected (data is
Comment # 37
on bug 10798
from Hadriel Kaplan
(In reply to Guy Harris from comment #36)
> which says
>
> In text protocols, like SIP, lot of time is spend guint8_pbrk(), ...
>
> What I think I saw was some file with a lot of SIP traffic where Anders(?)
> ran it without the SSE 4.2 mempbrk and with it, and it read significantly
> faster with it. Anders? Jakub? Any such test results?
Maybe it's just my machine?
I have a pcap with 1 million SIP messages, and running it with tshark, I get
less than 1% improvement between SSE and not-SSE. Here's the output of my
running tshark against my capture file using a filter that won't match but will
cause SIP to be dissected, and running tshark that way 15 times:
With SSE:
It took me 18686446 clicks (18.686445 seconds).
It took me 17595440 clicks (17.595440 seconds).
It took me 17276821 clicks (17.276819 seconds).
It took me 17283689 clicks (17.283688 seconds).
It took me 17371128 clicks (17.371128 seconds).
It took me 18241860 clicks (18.241859 seconds).
It took me 18738903 clicks (18.738905 seconds).
It took me 17652861 clicks (17.652861 seconds).
It took me 17085039 clicks (17.085039 seconds).
It took me 17762418 clicks (17.762419 seconds).
It took me 17753976 clicks (17.753977 seconds).
It took me 17513457 clicks (17.513456 seconds).
It took me 17978033 clicks (17.978031 seconds).
It took me 17333119 clicks (17.333120 seconds).
It took me 17316406 clicks (17.316406 seconds).
Average = 17705973.07
Without SSE:
It took me 18133392 clicks (18.133392 seconds).
It took me 17999885 clicks (17.999884 seconds).
It took me 17181740 clicks (17.181740 seconds).
It took me 18191908 clicks (18.191908 seconds).
It took me 18095553 clicks (18.095552 seconds).
It took me 18053774 clicks (18.053774 seconds).
It took me 17696800 clicks (17.696800 seconds).
It took me 17386838 clicks (17.386839 seconds).
It took me 17523624 clicks (17.523624 seconds).
It took me 18041411 clicks (18.041412 seconds).
It took me 17442003 clicks (17.442003 seconds).
It took me 17554366 clicks (17.554365 seconds).
It took me 17715569 clicks (17.715569 seconds).
It took me 18328641 clicks (18.328640 seconds).
It took me 17700523 clicks (17.700523 seconds).
Average = 17803068.47
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