Date: Wed, 28 Jun 2006 02:19:24 +0000 (GMT) From: wpaul@FreeBSD.ORG (Bill Paul) To: mike@sentex.net (Mike Tancsa) Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/share/man/man4 re.4 src/sys/dev/re if_re.c src/sys/dev/mii rgephy.c src/sys/pci if_rlreg.h Message-ID: <20060628021924.28A5016A40E@hub.freebsd.org> In-Reply-To: <6.2.3.4.0.20060627171641.10e46f78@64.7.153.2> from Mike Tancsa at "Jun 27, 2006 05:41:51 pm"
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> At 11:19 AM 27/06/2006, Bill Paul wrote:
> >[Charset koi8-r unsupported, filtering to ASCII...]
> > > On Mon, Jun 26, 2006 at 08:44:34PM +0000, Bill Paul wrote:
> > > B> wpaul 2006-06-26 20:44:34 UTC
> > > B>
> > > B> FreeBSD src repository
> > > B>
> > > B> Modified files: (Branch: RELENG_6)
> > > B> share/man/man4 re.4
> > > B> sys/dev/re if_re.c
> > > B> sys/dev/mii rgephy.c
> > > B> sys/pci if_rlreg.h
> > > B> Log:
> > > B> MFC updates to the re(4) driver from -current
> > >
> > > Is this going to be working? AFAIK, the new taskqueue API isn't
> > > merged yet.
> >
> >I decided not to use the new taskqueue API so that the code wouldn't
> >diverge too much. I don't have time to provide a lot of maintenance
> >on this, so the less work that's involved, the better. I tested
> >it on both 6.1 and 7.x before checking it in and it seemed fine
> >(though, granted, I'm only able to test it on x86).
>
>
> I gave it a try on a test box and it seems to work OK. Not the
> fastest around, but I didnt get any timeouts or errors when doing
> ftps and scps. Using netblast on AMD64 with the re0 xover cable to
> an i386 box with a bge0 on the other end.
My test setup is an Intel D915GEV desktop development board (P4, 2.6Ghz)
and a Dual PIII 1.2Ghz no-name Intel server system with an nge(4) NIC.
I subjected the driver to torture testing with netperf (TCP and UDP
in both directions), and with Smartbits (IP forwarding, unidirectional
and bi-directional). I was more concerned with reliability than speed.
The bi-directional Smartbits test is the thing most likely to knock
a driver over (usually due to a race condition), so if it passes that,
I'm usually satisfied. the same tests I run on VxWorks drivers that I
write, incidentally. (The VxWorks 8139/8169 drivers that I wrote had to
pass the same torture tests, on the same board.)
Note that, just for kicks, you might want to try turning on the
checksum offload support:
# ifconfig re0 txcsum
# ifconfig re0 rxcsum
You'll likely only see a performance gain in the TCP stream case.
> i386
>
> # ifconfig bge0
> bge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> options=18<VLAN_MTU,VLAN_HWTAGGING>
> inet 10.1.1.2 netmask 0xffffff00 broadcast 10.1.1.255
> ether 00:10:18:14:27:d5
> media: Ethernet autoselect (1000baseTX <full-duplex>)
> status: active
>
>
> amd
>
> 64[amdtest]# ifconfig re0
> re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> options=18<VLAN_MTU,VLAN_HWTAGGING>
> inet 10.1.1.1 netmask 0xffffff00 broadcast 10.1.1.255
> ether 00:0e:2e:00:ea:8e
> media: Ethernet autoselect (1000baseTX <full-duplex>)
> status: active
> 64[amdtest]# uname -a
> FreeBSD amdtest.sentex.ca 6.1-STABLE FreeBSD 6.1-STABLE #1: Tue Jun
> 27 15:25:02 EDT
> 2006 mdtancsa@amdtest.sentex.ca:/usr/obj/usr/src/sys/amd amd64
> 64[amdtest]#
>
>
> re0 as the client in SMP mode
>
> 64[amdtest]# dmesg
> Copyright (c) 1992-2006 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
> The Regents of the University of California. All rights reserved.
> FreeBSD 6.1-STABLE #1: Tue Jun 27 15:25:02 EDT 2006
> mdtancsa@amdtest.sentex.ca:/usr/obj/usr/src/sys/amd
> ACPI APIC Table: <A M I OEMAPIC >
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ (2000.09-MHz K8-class CPU)
> Origin = "AuthenticAMD" Id = 0x20f32 Stepping = 2
> Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
> Features2=0x1<SSE3>
> AMD Features=0xe2500800<SYSCALL,NX,MMX+,FFXSR,LM,3DNow+,3DNow>
> AMD Features2=0x3<LAHF,CMP>
> Cores per package: 2
> real memory = 503119872 (479 MB)
> avail memory = 475750400 (453 MB)
> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
> cpu0 (BSP): APIC ID: 0
> cpu1 (AP): APIC ID: 1
You carefully avoided disclosing the portion of your dmesg output that
shows exactly which RealTek device(s) you have.
*sigh*
-Bill
--
=============================================================================
-Bill Paul (510) 749-2329 | Senior Engineer, Master of Unix-Fu
wpaul@windriver.com | Wind River Systems
=============================================================================
<adamw> you're just BEGGING to face the moose
=============================================================================
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