Wireshark mailing list archives
Re: Timestamp Skew
From: Bill Meier <wmeier () newsguy com>
Date: Thu, 14 Jan 2010 13:31:53 -0500
Guy Harris wrote:
On Jan 14, 2010, at 10:19 AM, Lee Riemer wrote:The sniffer server is syncing with NTP, and this is also a dual core system. You may be on to something, though. If the box is correcting it's skew with NTP, wireshark might not be if it isn't polling the time for each packet. Anyone know exactly how WS picks the time to stamp?On Windows, it takes it from the information supplied to it by WinPcap, so it's not Wireshark that's picking the time to stamp, it's WinPcap. (On UN*X, it takes it from the information supplied to it by libpcap, which is, on almost all platforms, the time supplied to libpcap by the OS-native packet capture mechanism being used by libpcap.) If none of the WinPcap developers reply here, you might want to report it to them as a bug:
A web search for "time drift" winpcap turns up some seemingly relevant info..... ___________________________________________________________________________ Sent via: Wireshark-users mailing list <wireshark-users () wireshark org> Archives: http://www.wireshark.org/lists/wireshark-users Unsubscribe: https://wireshark.org/mailman/options/wireshark-users mailto:wireshark-users-request () wireshark org?subject=unsubscribe
Current thread:
- Timestamp Skew Lee Riemer (Jan 14)
- Re: Timestamp Skew Michael Glenn (Jan 14)
- Re: Timestamp Skew Lee Riemer (Jan 14)
- Re: Timestamp Skew Guy Harris (Jan 14)
- Re: Timestamp Skew Bill Meier (Jan 14)
- Re: Timestamp Skew Gianluca Varenni (Jan 14)
- Re: Timestamp Skew Lee Riemer (Jan 14)
- Re: Timestamp Skew Gianluca Varenni (Jan 14)
- Re: Timestamp Skew Lee Riemer (Jan 14)
- Re: Timestamp Skew Gianluca Varenni (Jan 14)
- Re: Timestamp Skew Tamás Varga (Jan 15)
- Re: Timestamp Skew Guy Harris (Jan 15)
- Re: Timestamp Skew Gianluca Varenni (Jan 15)
- Re: Timestamp Skew Guy Harris (Jan 15)
- Re: Timestamp Skew Gianluca Varenni (Jan 15)
- Re: Timestamp Skew Lee Riemer (Jan 14)
- Re: Timestamp Skew Michael Glenn (Jan 14)