From: "Rich" 

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   Gigabit helps with throughput but not with other factors like latency =
or interrupt overhead.

   The increase mike described from jumbo frames is smaller than I would =
expect.  It could be his configuration.

Rich


  "Geo"  wrote in message
news:42914c5e$1{at}w3.nls.net...
  Well without any tuning of any kind here I get 7MB/s copying a 357MB =
file from my laptop to my server on 100baseT, so going to 1000baseT I =
would expect a 10x speed improvement.

  You guys aren't getting anywhere near that kind of thruput so it's =
obvious to me that both you guys have a serious bottleneck somewhere. =
Personally my guess would be disk speed.

  Geo.
    "Rich"  wrote in message news:4290f134$1{at}w3.nls.net...
       Mike's setup may have other factors that hurt it.  Maybe it's his =
network adapters, poor drivers, or the operating system tcpop =
implementation.  He should probably provide those details.

       At my home without jumbo frames using a 32-bit PCI adapter on a =
desktop talking to a laptop with a PCI-E chipset I see 17 MB/s.  I can't =
try jumbo frames because my switch doesn't support them.  Between two =
32-bit PCI desktops I only get 16-1/4 MB/s.

    Rich

      "Geo"  wrote in message =
news:42909241{at}w3.nls.net...
      "Mike '/m'"  wrote in message
      news:2t1191dc52gqb7iqic14bo0iv8mp82ov9u{at}4ax.com...

      > 100mbps ethernet - 7-8MB/s throughput
      > 1000mbps ethernet on PCI bus, regular frames - 10MB/s
      > 1000mbps ethernet on PCI bus, jumbo frames - 12MB/s
      > 1000mbps ethernet off PCI bus, jumbo frames - 13MB/s

      wow, that sucks, I would have expected more like 70MB/s with =
gigabit.

      Geo.


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   Gigabit
helps with =
throughput but not=20
with other factors like latency or interrupt overhead.
 
   The increase mike =
described from jumbo=20
frames is smaller than I would expect.  It could be his=20
configuration.
 
Rich
 
 

  "Geo" <georger{at}nls.net>">mailto:georger{at}nls.net">georger{at}nls.net>
wrote=20
  in message news:42914c5e$1{at}w3.nls.net...
  Well without any tuning of any kind =
here I get=20
  7MB/s copying a 357MB file from my laptop to my server on 100baseT, so =
going=20
  to 1000baseT I would expect a 10x speed improvement.
   
  You guys aren't getting
anywhere near =
that kind=20
  of thruput so it's obvious to me that both you guys have a serious =
bottleneck=20
  somewhere. Personally my guess would be disk speed.
   
  Geo.
  

    "Rich" <{at}> wrote in message news:4290f134$1{at}w3.nls.net...
      
Mike's setup may have =
other=20
    factors that hurt it.  Maybe it's his network adapters, poor =
drivers,=20
    or the operating system tcpop implementation.  He should =
probably=20
    provide those details.
     
       At my
home without =
jumbo frames=20
    using a 32-bit PCI adapter on a desktop talking to a laptop with a =
PCI-E=20
    chipset I see 17 MB/s.  I can't try jumbo frames because my =
switch=20
    doesn't support them.  Between two 32-bit PCI desktops I only =
get=20
    16-1/4 MB/s.
     
    Rich
     
    
      "Geo" <georger{at}nls.net>=20">mailto:georger{at}nls.net">georger{at}nls.net>=20
      wrote in message news:42909241{at}w3.nls.net..."M=
ike=20
      '/m'" <mike{at}barkto.com>">mailto:mike{at}barkto.com">mike{at}barkto.com>
wrote=20
      in messagenews:2t1191dc52g=
qb7iqic14bo0iv8mp82ov9u{at}4ax.com...>=20
      100mbps ethernet - 7-8MB/s throughput> 1000mbps ethernet on =
PCI=20
      bus, regular frames - 10MB/s> 1000mbps ethernet on PCI bus, =
jumbo=20
      frames - 12MB/s> 1000mbps ethernet off PCI bus, jumbo =
frames -=20
      13MB/swow, that sucks, I would have expected more like =
70MB/s with=20
      =
gigabit.Geo.

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