tcpdump mailing list archives
where does PCAP timestamp before or after the MAC scheduler?
From: Debrei Gabor <debg () freemail hu>
Date: Thu, 30 Mar 2006 12:17:47 +0200 (CEST)
Hello! We want to compare 802.11 MAC schedulers performance, to decide how much the Media Access takes. We want to know where/when does PCAP put the timestamp (from not so accurate kernel time) on to the packets. I already know, it does when the kernel "sees" the packet. The question is: Is it after or before the MAC scheduler? I mean, does it in TR or RX buffers or at higher protocol layers take place? (If it takes place in the buffers the use of HW monitoring devices the only way of measuring? ) Thanks, I am looking forwad to Your answers. Gabor _________________________________________________________________________ Digitális fényképezőgépek rendkívüli csomagajánlatokkal, fotókidolgozás már 25,- Ft-tól FotoMarket, már 5 éve az Ön fotószolgálatában! www.fotomarket.hu - This is the tcpdump-workers list. Visit https://lists.sandelman.ca/ to unsubscribe.
Current thread:
- where does PCAP timestamp before or after the MAC scheduler? Debrei Gabor (Mar 30)
- Re: where does PCAP timestamp before or after the MAC scheduler? Bruce M Simpson (Mar 30)
- Re: where does PCAP timestamp before or after the Fabian Schneider (Mar 30)
- Re: where does PCAP timestamp before or after the MAC scheduler? David Young (Mar 30)