Date: Tue, 22 May 2007 03:47:39 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "security" <security@jim-liesl.org>, <freebsd-performance@freebsd.org> Subject: Re: asymetric speeds over gigE link] Message-ID: <005901c79c1b$8fed4490$b6db87d4@multiplay.co.uk> References: <4652383E.9000302@jim-liesl.org>
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You might want to try setting:
net.inet.tcp.inflight.enable=0
Just changing this on our FreeBSD 6.2 boxes enabled them to achieve
full line rate with ftp / proftpd transfers.
Steve
----- Original Message -----
From: "security" <security@jim-liesl.org>
> Switch is the Netgear GS105 (5 port, supposedly wire speed, cables are
> Belkin 5e), both systems are on this switch.
>
> FreeBSD box:
> FreeBSD 6.1-RELEASE-p10
> 1.9Ghz Athlon / 1 gig of main mem
> Abit/nforce2 MB+chipset (onboard nic disabled in bios)
> Intel Pro/1000GT NIC
> sysctl.conf:
> kern.ipc.maxsockbuf=8192000
> net.inet.tcp.sendspace=262144
> net.inet.tcp.recvspace=262144
> sysctl reports:
> kern.ipc.nmbjumbo16: 0
> kern.ipc.nmbjumbo9: 0
> kern.ipc.nmbjumbop: 0
> kern.ipc.nmbclusters: 25600
> net.inet.tcp.rfc1323: 1
>
> em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> options=b<RXCSUM,TXCSUM,VLAN_MTU>
> inet6 fe80::20e:cff:feda:1a3c%em0 prefixlen 64 scopeid 0x1
> inet 192.168.1.15 netmask 0xffffff00 broadcast 192.168.1.255
> ether 00:0e:0c:da:1a:3c
> media: Ethernet autoselect (1000baseTX <full-duplex>)
> status: active
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