tcpdump mailing list archives
Re: PCAP performance
From: "Hans Klute" <hklute () gmx de>
Date: Fri, 2 Apr 2004 14:02:50 +0200 (MEST)
On Thu, Apr 01, 2004 at 02:12:35PM +0200, Hans Klute wrote:Now I have noticed that about every 3 minutes and 15 seconds the Program uses 100 % of the CPU. After about 45 sec the program works normal again and uses only 10% oftheCPU time. The program is running on a 300 MHz Celeron with 128 MB RAM underSlackware8.1.If you're running it from a terminal window, try typing the quit character at it (control-backslash, unless you or the Slackware folks or Linux distributions in general change it from the traditional UN*X default) when it's running at 100%; that should cause it to dump core. Then use gdb to see what the program was doing at that time.
I have tried it, but it didn`t help me very much. The program was in a normal state in which it processed a packet. I realized now that just before my program uses all CPU time the system starts to use the CPU more. The System uses about 30 % of the CPU and then my program starts to burn CPU power. I think there is something happening in the kernel... ? -- +++ NEU bei GMX und erstmalig in Deutschland: TÜV-geprüfter Virenschutz +++ 100% Virenerkennung nach Wildlist. Infos: http://www.gmx.net/virenschutz - This is the tcpdump-workers list. Visit https://lists.sandelman.ca/ to unsubscribe.
Current thread:
- PCAP performance Hans Klute (Apr 01)
- Re: PCAP performance sthaug (Apr 01)
- Re: PCAP performance Hans Klute (Apr 01)
- Re: PCAP performance Guy Harris (Apr 01)
- Re: PCAP performance Hans Klute (Apr 02)
- Re: PCAP performance sthaug (Apr 04)
- Re: PCAP performance Hans Klute (Apr 02)
- Re: PCAP performance sthaug (Apr 01)