lkml.org 
[lkml]   [2001]   [Jan]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing to dowith ECN)


    On Tue, 30 Jan 2001, Rick Jones wrote:

    > > ** I reported that there was also an oddity in throughput values,
    > > unfortunately since no one (other than me) seems to have access
    > > to a gige cards in the ZC list, nobody can confirm or disprove
    > > what i posted. Here again as a reminder:
    > >
    > > Kernel | tput | sender-CPU | receiver-CPU |
    > > -------------------------------------------------
    > > 2.4.0-pre3 | 99MB/s | 87% | 23% |
    > > NSF | | | |
    > > -------------------------------------------------
    > > 2.4.0-pre3 | 86MB/s | 100% | 17% |
    > > SF | | | |
    > > -------------------------------------------------
    > > 2.4.0-pre3 | 66.2 | 60% | 11% |
    > > +ZC | MB/s | | |
    > > -------------------------------------------------
    > > 2.4.0-pre3 | 68 | 8% | 8% |
    > > +ZC SF | MB/s | | |
    > > -------------------------------------------------
    > >
    > > Just ignore the CPU readings, focus on throughput. And could someone plese
    > > post results?
    >
    > In the spirit of the socratic method :)

    ;->

    >
    > Is your gige card based on Alteon?

    Yes, sir, it is. To be precise:

    ** Sender: SMP-PII-450Mhz, ASUS m/board; 3com version of acenic
    - 1M version
    ** receiver: same hardware; acenic alteon card - 1M version

    > How does ZC/SG change the nature of the packets presented to the NIC?

    what do you mean? I am _sure_ you know how SG/ZC work. So i am suspecting
    more than socratic view on life here. Could be influence from Aristotle;->

    > How well does the NIC do with that changed nature?
    >

    Hard question to answer ;-> I havent done any analysis at that level

    cheers,
    jamal

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

    \
     
     \ /
      Last update: 2005-03-22 13:26    [W:0.021 / U:3.252 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site