Re: Linux Vs. FreeBSD Networking Performance
Hi,
Recently there was a culomn in byte.com by Moshe Bar, and his tests seemed
to show that FreeBSD-4.1.1 could still beat the Linux 2.4.0 kernel. The
test machine was a 2-way SMP machine, running the a giant locked
FreeBSD-4.1.1 kernel and also a fine-locked 2.4.0 Linux kernel. Here's the
link: http://www.byte.com/column/BYT20010130S0010
On Thu, 22 Mar 2001, Jonathan Graehl wrote:
> Interesting topic in the linux kernel mailing list (Linux is "a lot" faster than
> FreeBSD):
> http://kt.zork.net/kernel-traffic/latest.html#2
>
> I came to use FreeBSD from Linux for servers because of kqueue. I stayed
> because I liked the entire system. I'm sure that Linux does TCP processing as
> fast as possible, and that in-kernel servers (NFS and the TUX webserver) are
> blazingly fast.
>
> I do have Linux 2.4 running on an old machine, but I have no intention of taking
> down my FreeBSD box to dual boot Linux just to compare penis size. Has anyone
> recently done so?
>
> --
> Jonathan Graehl
> http://jonathan.graehl.org/
>
>
> To Unsubscribe: send mail to [EMAIL PROTECTED]
> with "unsubscribe freebsd-net" in the body of the message
>
-
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`6_ 6 ) `-. ( ).`-.__.`)Indra Networks Pvt. Ltd.
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toner supplies
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Re: dhclient not setting IP ...
On Thu, 22 Mar 2001, Matthew Emmerton wrote: > > I'm connected through cable to the 'Net, and the provider I go > > through, it appears, somehow has it setup that if I change nics, I hvae a > > bugger of a time re-acquiring a lease ... > > I presume dhclient is what you use to get your IP address. > > I've seen ISPs that record the MAC address of the interface, and won't give > out addresses to any other MAC address but the original one. They'll expire > that MAC eventually, but perhaps not for 24 hours or a week. this is what it appears it was ... called up their tech support last night, the girl there said "we dont' support Unix", I asked her to release the IP and low-n-behold, I got a new one ... Thanks ... To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
Re: Linux Vs. FreeBSD Networking Performance
In article <[EMAIL PROTECTED]> you write: >I can confirm Linux 2.4 TCP/IP is faster than FreeBSD, they have >dynamic tuned TCP window, unlike we have a fixed max TCP window >set in SYSCTL. they have SACK and FACK, it is better in high speed line >than FreeBSD, it is also multi-threaded, better on SMP, someone >despise Linux should wakeup now, Linux is not so bad. Unfortunately, you haven't confirmed anything here, other than Linux has a different feature set than FreeBSD, which we already are aware of. Just having more features does not automatically make things faster. -- Jonathan To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
ttr: Shared-RAM (a.k.a. TROPIC) token ring adapter driver (beta) available
The driver available at http://www.otdel-1.org/nms/tr/ttr.tar.gz One also need orm driver submitted as kern/22078. It available also at http://www.otdel-1.org/nms/tr/orm.tar.gz Installation for both drivers: Drivers where developed under 4.2-STABLE, but should run under -CURRENT too (at least I hope so). Unpack archives in any directory and do (for both drivers) make make install Add the following to /boot/loader.conf verboseboot="YES" orm_load="YES" if_ttr_load="YES" I am interested in succcess/failure cases, so PLEASE do not hesitate to send me dmesg output. Some debug output still present in ttr driver. English is not my native language so feel free to extend/edit manual pages, where appropriate (do not forget submit your changes to me). Plans: Netgraph only driver and any additional modules required. Additional buses (PCMCIA, MCA, EISA, PCI, CardBus) if I see interest. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
Re: Linux Vs. FreeBSD Networking Performance
On Fri, Mar 23, 2001 at 02:21:24PM +0530, Ashutosh S. Rajekar wrote: > [FreeBSD TCP/IP is faster than Linux TCP/IP in Benchmark X] > > [Linux TCP/IP is faster than FreeBSD TCP/IP in Benchmark Y] There are lies, statistics, and benchmarks. And then there are the conclusions based on them. The conclusions are often the shakiest part. -- __ Steve Shah ([EMAIL PROTECTED]) | Voice: 408.284.4226 Pager: 408.989.4247 http://www.clickarray.com | Pager E-Mail: [EMAIL PROTECTED] ~~ Beating code into submission, one OS at a time... To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
Re: RTM_LOSING: Kernel Suspects Partitioning:
< said: >> This is perfectly natural. TCP will generate these messages whenever >> its retransmission timer goes off; they should correlate with packet >> losses. > Is it also natural that I cannot ftp from the box to anywhere > (eg. ftp.cdrom.com)? One goes in hand with the other. Your TCP connections are timing out, which causes the RTM_LOSING messages. Clearly, your packets are not getting anywhere. Perhaps you should carefully check your configuration. -GAWollman To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
Re: dhclient not setting IP ...
I've heard folklore that power-cycling the cable-modem works - apparently it's the thing that remembers the MAC. Barney Wolff On Fri, Mar 23, 2001 at 08:55:14AM -0400, The Hermit Hacker wrote: > On Thu, 22 Mar 2001, Matthew Emmerton wrote: > > > > I'm connected through cable to the 'Net, and the provider I go > > > through, it appears, somehow has it setup that if I change nics, I hvae a > > > bugger of a time re-acquiring a lease ... > > > > I presume dhclient is what you use to get your IP address. > > > > I've seen ISPs that record the MAC address of the interface, and won't give > > out addresses to any other MAC address but the original one. They'll expire > > that MAC eventually, but perhaps not for 24 hours or a week. > > this is what it appears it was ... called up their tech support last > night, the girl there said "we dont' support Unix", I asked her to release > the IP and low-n-behold, I got a new one ... To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
ppp(8) + ip forwarding doesn't work anymore
Hi, I noticed that after upgrading to 4-BETA something goes wrong with ip forwarding via ppp(8). I have a FreeBSD box (A) connected to Internet via network interface and this system also has a modem for dial-in and backup dial-up connection. Sometimes I need to route through this modem traffic to/from only one specific host (B) on my internal network, so I used the following command to do it and it worked like a charm (50 is the first rule): ppp.linkup: !bg /sbin/ipfw add 50 fwd HISADDR ip from B to not 192.168.0.1/24 ppp.linkdown: !bg delete 50 After upgrading to 4-BETA and consequently to 4-RC this doesn't work anymore :(((. After a link is up I see this rule in my ipfw configuration, see route to HISADDR in routing table, can ping HISADDR from A, but all packets from B are silently discarded (I see count increase in `ipfw show', but ppp doesn't show any IP packets going through). At the same time, I can get all packets from B and other hosts routed through ppp by doing `route add default HISADDR' after link is up, so obviously my configuration is OK. I suspect that this has something to do with recent forwarding changes, but can't tell more precisely. It looks to me like a serious bug, that ought to be resolved before 4.3-RELEASE. -Maxim P.S. Yes, I have gateway_enable="YES" and "options IPFIREWALL_FORWARD" on A. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
RE: Linux Vs. FreeBSD Networking Performance
> Yes, we do. In fact, the difference between FreeBSD and Linux is > greater > than 2x. On equivalent processors, we demonstrated 1900 polygraph > req/sec > on FreeBSD 4.2 and 720 polygraph req/sec on a 2.2.14 Linux kernel. It's > also worth mentioning that the response time for FreeBSD at 1900 req/sec > was faster than Linux at 720 req/sec. > > There are other advantages to FreeBSD, but kqueue is definitely > at the top of the list. > > Alan What would it take to get Linus to give the nod to an implementation conforming to the kqueue API? I remember him saying that he only wanted it to work for file descriptors, and to only allow one kqueue per process - neither of which I agree with. The abstraction penalty for the capability of multiple filter types and kqueue-as-selectable-fd is as minimal as a table lookup and a pointer indirection. If the kqueue API is overengineered, well, then, so is the Berkeley Sockets API. -- Jonathan Graehl http://jonathan.graehl.org/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
RE: 4.3-BETA netmask problem
Right! A stupid dial-up connection I wasn't thinking of -Original Message- From: Ruslan Ermilov [mailto:[EMAIL PROTECTED]] Sent: Friday, March 23, 2001 08:32 To: Peter Blok; Garrett Wollman Cc: [EMAIL PROTECTED] Subject: Re: 4.3-BETA netmask problem On Thu, Mar 22, 2001 at 09:45:12PM +0100, Peter Blok wrote: > Hi, > > I'm having a strange problem. I have a block public ip addresses at > X.Y.Z.128/28. My FreeBSD 4.3-BETA system has assigned IP address X.Y.Z.140 > netmask 255.255.255.240, broadcast X.Y.Z.143. > > I don't use routed. I have one static host route to a particular host. > > Here's the problem when somebody tries to access me from the outside with IP > A.B.C.D I'm getting messages: > > /kernel: arplookup A.B.C.D failed: host is not on local network > /kernel: arpresolve: can't allocate llinfo A.B.C.Drt > > I arplookup is right! The IP address is not on the local network. Why is > arplookup displaying this? What is wrong? I am also not able to slogin to > this public address. > On Thu, Mar 22, 2001 at 04:23:48PM -0500, Garrett Wollman wrote: > < said: > > > /kernel: arplookup A.B.C.D failed: host is not on local network > > /kernel: arpresolve: can't allocate llinfo A.B.C.Drt > > Show us the output of `route -nv get A.B.C.D'. And we will see that this route has an indirect gateway! Cheers, -- Ruslan Ermilov Oracle Developer/DBA, [EMAIL PROTECTED] Sunbay Software AG, [EMAIL PROTECTED] FreeBSD committer, +380.652.512.251Simferopol, Ukraine http://www.FreeBSD.org The Power To Serve http://www.oracle.com Enabling The Information Age To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
Re: Linux Vs. FreeBSD Networking Performance
Jonathan Graehl wrote: > > What would it take to get Linus to give the nod to an implementation conforming > to the kqueue API? I remember him saying that he only wanted it to work for > file descriptors, and to only allow one kqueue per process - neither of which I > agree with. The abstraction penalty for the capability of multiple filter types > and kqueue-as-selectable-fd is as minimal as a table lookup and a pointer > indirection. If the kqueue API is overengineered, well, then, so is the > Berkeley Sockets API. > You should ask the "other" Alan Cox. I'm the one with the FreeBSD commit bit as opposed to the Linux commit bit. :-) In general, I agree with your statements in regards to kqueue(). It's not overengineered. The capabilities beyond simple poll/select functionality are quite useful in practice. In fact, I contributed the current API by which AIO can signal I/O completion through kevent(). Alan To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
3com pcmcia install
Hi, I have a 3com 3CXFE575CT pcmcia network card and need some help having it recongnized on FreeBSD 4.2 on a Toshiba Tecra 8100. During the install, I picked the default address for the card, and irq 11. At which time the link light appeared for the card ( but did not make the usual "beep" that occurs when activated when I was running linux before ). Anyhow, after installation the link light still shows up, but when i do an ifconfig, the card is not shown. So basically, I was wondering how would I enable this card? Thanks for any help, Satish To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
Re: 3com pcmcia install
IIRC, this is a cardbus card. Those are only supported in current, not 4.x. Get a cheap 16-bit pcmcia, for now. Barney Wolff On Fri, Mar 23, 2001 at 11:00:07PM -0500, Satish Sambandham wrote: > Hi, > > I have a 3com 3CXFE575CT pcmcia network card and need some help having > it recongnized on FreeBSD 4.2 on a Toshiba Tecra 8100. During the install, I > picked the default address for the card, and irq 11. At which time the link > light appeared for the card ( but did not make the usual "beep" that occurs > when activated when I was running linux before ). Anyhow, after > installation the link light still shows up, but when i do an ifconfig, the > card is not shown. So basically, I was wondering how would I enable this > card? To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
Re: gif(4) question
> On Thu, 22 Mar 2001 16:02:10 -0500, > "David E. Cross" <[EMAIL PROTECTED]> said: > Why is routing done via the ::1 and 127.0.0.1 network addresses? I notice > for "normal" interfaces it is bound directly to "link#2" and such. It's just a characteristic (or ristriction if you want to say that) of BSD's IPv4 routing on point-to-point interfaces. I don't know the deep rationale. > I realize I don't really know what I am talking about here, but, it > seems that binding it to the link is more efficient than having it go > through the loopback interface. I'm not sure what you mean "efficient" here. But using addresses to install a route to the loopback interface does not decrease the output performance. > Also, it will work in cases where the > loopback is not defined (don't ask... just don't ask) That's not true. In the BSD's routing architecture, if you want to install a route of a particular address family to an interface, you need at least one interface address of the address family on the interface. The address need not to be the well-defined "loopback address", though. JINMEI, Tatuya Communication Platform Lab. Corporate R&D Center, Toshiba Corp. [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
