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Re: TSO / LSO
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Re: TSO / LSO


  • Subject: Re: TSO / LSO
  • From: Ed Wynne <email@hidden>
  • Date: Tue, 2 Jan 2007 13:55:09 -0500


On Jan 2, 2007, at 1:39 PM, Andrew Gallatin wrote:

The payoff is pretty large.  For the 10GbE NIC I do drivers for, we
went from sending at ~2Gb/s to ~8Gb/s when using a 1500 byte MTU on a
fairly wimpy 1.8GHz single CPU AMD64 when I implemented TSO support
in our FreeBSD driver.

Do you have any numbers on the before / after CPU consumption? Doing more while using less power appears to be all the rage these days. Even better is doing the same thing while using a fraction of the power. If through put isn't enough of a motivator, perhaps a little extra battery life...


-Ed

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  • Follow-Ups:
    • Re: TSO / LSO
      • From: Andrew Gallatin <email@hidden>
References: 
 >Re: mbuf_outbound_finalize bug? (From: Terry Lambert <email@hidden>)
 >Re: mbuf_outbound_finalize bug? (From: Josh Graessley <email@hidden>)
 >Re: mbuf_outbound_finalize bug? (From: Andrew Gallatin <email@hidden>)
 >Re: mbuf_outbound_finalize bug? (From: Josh Graessley <email@hidden>)
 >TSO / LSO (From: Andrew Gallatin <email@hidden>)

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