Re: [PATCH 0/2] NET: Accurate packet scheduling for ATM/ADSL

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Jesper Dangaard Brouer wrote:
The Linux traffic's control engine inaccurately calculates
transmission times for packets sent over ADSL links.  For
some packet sizes the error rises to over 50%.  This occurs
because ADSL uses ATM as its link layer transport, and ATM
transmits packets in fixed sized 53 byte cells.


I could have sworn that DSL uses its own framing protocol that is similar to the frame/superframe structure of HDSL ( T1 ) lines and over that you can run ATM or ethernet. Or is it typically ethernet -> ATM -> HDSL?

In any case, why does the kernel care about the exact time that the IP packet has been received and reassembled on the headend?


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux