https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7674
Summary: Performance regression in tshark -z io,stat
Product: Wireshark
Version: 1.8.0
Platform: x86
OS/Version: All
Status: NEW
Severity: Major
Priority: Low
Component: TShark
AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
ReportedBy: niels@xxxxxxxxxx
Build Information:
TShark 1.8.3 (SVN Rev 44599 from /trunk-1.8)
Copyright 1998-2012 Gerald Combs <gerald@xxxxxxxxxxxxx> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Compiled (64-bit) with GLib 2.32.3, with libpcap, with libz 1.2.3.4, without
POSIX capabilities, with SMI 0.4.8, with c-ares 1.7.5, without Lua, without
Python, with GnuTLS 2.12.14, with Gcrypt 1.5.0, with MIT Kerberos, with GeoIP.
Running on Linux 3.2.0-29-generic, with locale en_US.UTF-8, with libpcap
version
1.1.1, with libz 1.2.3.4.
Built using gcc 4.6.3.
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A major performance regression for the -z io,stat option appears to have crept
into the 1.8 branch of tshark. Below shows running tshark -z io,stat,0.001
over the same capture, first with the latest code in the trunk-1.8 branch and
then again in the trunk-1.6 branch:
niels@lark:~/projects/wireshark_1_8$ time ./tshark -r zeus-sample-3.pcap -q -z
io,stat,0.001 > 1.8output.txt
real 0m15.054s
user 0m14.869s
sys 0m0.148s
niels@lark:~/projects/wireshark_1_6$ time ./tshark -r zeus-sample-3.pcap -q -z
io,stat,0.001 > 1.6output.txt
real 0m0.374s
user 0m0.288s
sys 0m0.064s
The 1.8 branch is forty times slower than the 1.6 branch. I've attached the
zeus-sample-3.pcap capture file and output from the two runs.
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