Re: Call for re(4) TSO/VLAN testers

From: Pieter de Goeje <pieter_at_degoeje.nl>
Date: Mon, 13 Nov 2006 16:37:57 +0100
On Saturday 11 November 2006 02:10, Pyun YongHyeon wrote:
> With TSO you can see reduced system load while large file transfers
> is in progress. Please test the patch and report any unusual things
> you've found.

Idle time has increased from 0% to 25% with this patch while sustaining the 
transferrate (520Mbit/s) previously reached with iperf.
With the patch the number of interrupts/sec. was halved from 32K to 16K.

The test was performed on a fresh current without any tuning but with debug 
support removed.

System details:
CPU: AMD Sempron(tm)   2400+ (1659.95-MHz 686-class CPU)
re0_at_pci0:9:0:   class=0x020000 card=0x816910ec chip=0x816910ec rev=0x10 
hdr=0x00
    vendor   = 'Realtek Semiconductor'
    device   = 'RTL8169 Gigabit Ethernet Adapter'

The receiving end was probably limiting the transferrate.

-- Pieter de Goeje
Received on Mon Nov 13 2006 - 14:38:49 UTC

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