On Wed, Jun 30, 2010 at 07:00:53PM -0700, Garrett Cooper wrote: > Hi, > Just an observation I made while transferring a file: > > # time scp floppy.img somehost: > Password: > floppy.img 100% 1440KB 13.7KB/s 01:45 > > real 1m59.400s > user 0m0.031s > sys 0m0.028s > # sysctl net.inet.tcp.tso=0 > net.inet.tcp.tso: 1 -> 0 > # time scp floppy.img somehost: > floppy.img 100% 1440KB 1.4MB/s 00:00 > > real 0m0.712s > user 0m0.018s > sys 0m0.018s > > Going ISDN speeds transferring a 1.44MB file is sad when you have > a gigabit uplink :(... natd seems to be doing a LOT of spinning when > TSO is enabled (it's going up to 73% CPU on a dual-proc quad-core > machine).
I would use pf(4) if I have to handle lots of NAT rules. > Here are some other details: > > # ipfw list > 00050 divert 8668 ip4 from any to any via bce1 > 00100 allow ip from any to any via lo0 > 00200 deny ip from any to 127.0.0.0/8 > 00300 deny ip from 127.0.0.0/8 to any > 00400 deny ip from any to ::1 > 00500 deny ip from ::1 to any > 00600 allow ipv6-icmp from :: to ff02::/16 > 00700 allow ipv6-icmp from fe80::/10 to fe80::/10 > 00800 allow ipv6-icmp from fe80::/10 to ff02::/16 > 00900 allow ipv6-icmp from any to any ip6 icmp6types 1 > 01000 allow ipv6-icmp from any to any ip6 icmp6types 2,135,136 > 65000 allow ip from any to any > 65535 deny ip from any to any > # ls /etc/natd* > ls: /etc/natd*: No such file or directory > # uname -a > FreeBSD tameshi.cisco.com 8.1-PRERELEASE FreeBSD 8.1-PRERELEASE #0 > r209169: Mon Jun 14 12:41:49 PDT 2010 > root@:/usr/obj/data/scratch/src/stable/8/sys/TAMESHI_STABLE amd64 > # pciconf -lv | grep -A 4 bce > b...@pci0:7:0:0: class=0x020000 card=0x01b21028 chip=0x164c14e4 > rev=0x12 hdr=0x00 > vendor = 'Broadcom Corporation' > device = 'Broadcom NetXtreme II Gigabit Ethernet Adapter (BCM5708)' > class = network > subclass = ethernet > -- > b...@pci0:3:0:0: class=0x020000 card=0x01b21028 chip=0x164c14e4 > rev=0x12 hdr=0x00 > vendor = 'Broadcom Corporation' > device = 'Broadcom NetXtreme II Gigabit Ethernet Adapter (BCM5708)' > class = network > subclass = ethernet > > Let me know what other info is required. Can you reproduce this issue on other TSO capable drivers? I'm not aware of any TSO issues on bce(4). _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
