Date: Mon, 13 Nov 2006 16:37:57 +0100 From: Pieter de Goeje <pieter@degoeje.nl> To: pyunyh@gmail.com Cc: freebsd-current@freebsd.org Subject: Re: Call for re(4) TSO/VLAN testers Message-ID: <200611131637.57216.pieter@degoeje.nl> In-Reply-To: <20061111011051.GB5233@cdnetworks.co.kr> References: <20061111011051.GB5233@cdnetworks.co.kr>
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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@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
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