https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4249
Summary: Frame Time Delta incorrect
Product: Wireshark
Version: 1.2.4
Platform: x86
OS/Version: Windows XP
Status: NEW
Severity: Normal
Priority: Low
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: hararghost@xxxxxxxxxxx
Build Information:
Using v1.2.4 (SVN Rev 30978) as downloaded from official website.
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I am testing a microcontroller that sends packets over ethernet at a regular
time interval (1.89mS). The time interval of the packets was being erronously
reported by Wireshark as 1.37mS.
I am using a laptop to run Wireshark. The problem was that the laptop's BIOS
forces the CPU to run at 1.6Ghz when not plugged into a power socket. When the
laptop is running on battery, most utilities report the CPU clock speed as
being 2.2Ghz (its maximum speed), even though it is in reality running at
1.6Ghz. I believe this is the reason Wireshark is reporting incorrect time
deltas.
Plugging the laptop into the wall power socket fixes the problem (i.e.,
Wireshark reports the correct time deltas).
1.6Ghz/2.2Ghz = 1.37mS/1.89mS.
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