Re: FCP-0101: Deprecating most 10/100 Ethernet drivers

> On Oct 4, 2018, at 7:58 AM, Warner Losh wrote: > > On Thu, Oct 4, 2018 at 6:53 AM Luciano Mannucci > wrote: > >>> While I have no objection for general direction, I have doubts about >> removal >>> of ste(4) and especially rl(4). These are cheap 100Mbit VERY popular NICs >>> sold in

Re: Same host or different? How can you tell "over the wire"?

> On Mar 21, 2018, at 4:47 PM, Ronald F. Guilmette > wrote: > > But your question certainly raises an interesting possibility, and an > interesting question... one that I myself am not at all equiped or > qualified to answer (because I am almost totally ignorant about

Re: Duplicate Address Detection misfire?

Sorry for the slow reply. We run mainly ESXi (the bare metal version of VMware, not the desktop versions) but I do remember seeing something sort of similar on a desktop version ages ago. Basically we narrowed it down to a Windows driver bug on the host system's ethernet card. It was basically

Re: Duplicate Address Detection misfire?

On Jun 30, 2013, at 6:48 PM, Zaphod Beeblebrox zbee...@gmail.com wrote: I have a FreeBSD 9.1-RELEASE vmware guest running. It is using the bridged type of networking with VMWare. It gets it's IPv4 address from DHCP (successfully) and then fails to initialize IPv6. The relevant rc.conf is:

Re: Syncookies break with Windows 8

On Feb 1, 2013, at 5:09 PM, Andre Oppermann an...@freebsd.org wrote: I'm working on a solution. Have to make sure that the chance to crack a reduced cookie during its 30 seconds lifetime isn't too high. That means involving our resident crypto experts for verification. Hey, Andre! I

Re: lacp on lagg interface: same speed, different media

On Feb 12, 2013, at 3:44 PM, Josef Pojsl j...@tns.cz wrote: Hello list, on a FreeBSD 8.3-RELEASE-p3, I have come across a problem with lacp protocol on a lagg interface. I have aggregated two interfaces with the same speed but slightly different type of media (namely 10Gbase-SR and

Syncookies break with Windows 8

We've got a large cluster of HTTP servers, each server handling 10,000req/sec. Occasionally, and during periods of heavy load, we'd get complaints from some users that downloads were working but going EXTREMELY slowly. After a whole lot of debugging, we narrowed it down to being only Windows 8

Re: Syncookies break with Windows 8

On Feb 1, 2013, at 4:05 PM, Ed Maste ema...@freebsd.org wrote: On 1 February 2013 16:21, Kevin Day ke...@your.org wrote: We've got a large cluster of HTTP servers, each server handling 10,000req/sec. Occasionally, and during periods of heavy load, we'd get complaints from some users

Re: Syncookies break with Windows 8

On Feb 1, 2013, at 4:39 PM, Andre Oppermann opperm...@networx.ch wrote: This is not true. FreeBSD uses bits in the timestamp to encode all recognized TCP options including window scaling. Sorry, you are correct here. Reading through a half dozen TCP implementations in the last day trying

Slow local TCP transfers on -CURRENT

I've been seeing this for a few months now on -CURRENT. TCP transfers to local IP addresses (but not 127.0.0.1) are incredibly slow. Transfer from localhost: # scp r...@127.0.0.1:/boot/kernel/kernel . kernel 100 %

sfbufs on amd64?

When using sendfile() on an amd64 box, are sfbufs still used/needed? The reason I ask: # netstat -m 0/0/0 sfbufs in use (current/peak/max) 0 requests for sfbufs denied 0 requests for sfbufs delayed 1334122 requests for I/O initiated by sendfile kern.ipc.nsfbufsused: 0 kern.ipc.nsfbufspeak:

Deadlock in 7.0-RELEASE with nd6/rtalloc

I've got a somewhat reproducible deadlock in 7.0-RELEASE. I believe the same was present in 6.x as well. The problem is that the deadlock is so hard that DDB doesn't work, so I've had to resort to firewire debugging. That makes mutex debugging a real challenge. :) Two threads are

LOR icmp6_input/nd6_lookup

This is from 7.0-RELEASE: lock order reversal: 1st 0xc3bde2b8 rtentry (rtentry) @ netinet6/nd6.c:1930 2nd 0xc3af367c radix node head (radix node head) @ net/route.c:147 KDB: stack backtrace: db_trace_self_wrapper (c08af130,e11b8600,c0662bbe,c08b1592,c3af367c,...) at

Re: Multiple default routes on multihome host

On Feb 21, 2008, at 9:51 PM, Wes Peters wrote: As much as anything I just object to the semantic dissonance in multiple default. Think about it. I still haven't decided what it means at the packet level to have multiple default routes. Does that mean that, not having found a better

Re: Multiple default routes on multihome host

On Feb 18, 2008, at 3:00 PM, Nick Barnes wrote: I have a multi-home host: more than one IP address. The addresses are in separate subnets but run over the same ethernet segment (this is a temporary situation while I switch an office network over from one network provider to another). I want

rtsol doesn't work with bce without promisc (with fix!)

Just in case anyone is still using 6.2-RELEASE and can't get rtsol working on a bce network card, with symptoms like this: bce0: flags=8843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST mtu 1500 options=3bRXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU # rtsol -d bce0 checking if bce0 is

route(8) sendpipe/recvpipe not working?

I'm playing with 6.3-RC1 on a test box to see what breaks for us, and so far only one thing seems wrong... If I do: # route add 1.2.3.4/32 2.3.4.5 -sendpipe 131072 add net 1.2.3.4: gateway 2.3.4.5 It seems to work okay, but the sendpipe option doesn't seem to have any effect: # route

Re: looking for dual-phy (copper fiber) NIC

On Jan 5, 2008, at 2:30 PM, Aaron Turner wrote: Sorry for the slightly OT, but I've run out of ideas... I could of sworn about a month ago or so, I found a half-height gigabit NIC (PCI Express I think) which offered two copper AND two SFP connectors for fiber. The card had only two ethernet

Re: IPFW update frequency

On Mar 30, 2007, at 3:40 PM, Julian Elischer wrote: I have been looking at the IPFW code recently, especially with respect to locking. There are some things that could be done to improve IPFW's behaviour when processing packets, but some of these take a toll (there is always a toll) on the

Re: 5.4-RELEASE and 5.5-RELEASE Slow routing table response

On Feb 22, 2007, at 1:45 PM, Jeremy Nelson wrote: I have an Internet proxy that is running FreeBSD 5.4-RELEASE. This server has been up and running beautifully for about a year and a half with no issues. Just the other day I had a user try to connect to a host on the Internet and her

Re: packet drop with intel gigabit / marwell gigabit

On Mar 18, 2006, at 5:44 AM, OxY wrote: hi! i had the packet drop problem with the marwell yukon gigabitcard: (system is an amd 2000+xp, 512mb ram, fbsd 6.0-p5) when the apache ran, with no http, just used to share files and the traffic was 2-2,5MB/S i had 14-17% packet drop on the

Re: Network card selection / recommendations ?

On Feb 27, 2006, at 4:17 PM, Andrew Seguin wrote: First off, several gigabit network cards advertise various kinds of network cable diagnostics (Intel Advanced Cable Diagnostics, D- Link Cable Diagnostic,for example). We have in one building here old wiring that wasn't professionaly

Re: em driver + VLAN's

On Jan 18, 2006, at 9:05 AM, Dave Raven wrote: FreeBSD 4.9 - char em_driver_version[] = 1.7.16; I've tried multiple bridge configurations - from bridging just em0,em1 to bridging two vlan's attached to each card. Unfortunately I don't have access to the box at the moment - if its still

Re: dummynet, em driver, device polling issues :-((

On Oct 4, 2005, at 6:56 PM, Dave+Seddon wrote: You mention your running at near line rate. What are you pushing or pulling? Whats the rough spec of these machines pushing out this much data? What setting do you have for the polling? I've been trying to do near line rate and can't even

Re: dummynet, em driver, device polling issues :-((

On Oct 5, 2005, at 7:21 AM, Ferdinand Goldmann wrote: In one case, we had a system acting as a router. It was a Dell PowerEdge 2650, with two dual server adapters. each were on separate PCI busses. 3 were lan links, and one was a wan link. The lan links were receiving about 300mbps each,

Re: dummynet, em driver, device polling issues :-((

On Oct 4, 2005, at 7:00 AM, Ferdinand Goldmann wrote: Ok, to followup on this issue: Today I installed the driver which I had downloaded from the Intel website (em-3.2.15.tar.gz). This driver does not solve the issue with Ierrs rising rapidly when polling is enabled (I tried HZ=1000 and

Re: Problems with SK and EM network cards/drivers on my system

On Sep 18, 2005, at 1:15 PM, Benjamin Rosenblum wrote: when i am running a very high network load (streaming video, dumping ALOT of data across the network, etc) the network card disconnects (i loose pings and all my transfers drop) and 15-20 seconds later it pops up on the console with

Re: Very strange kevent problem possibly to do with vinum

On Dec 10, 2004, at 5:01 AM, Igor Sysoev wrote: On Wed, 8 Dec 2004, Kevin Day wrote: I have a really really strange kevent problem(i think anyway) that has really stumped me. What does systat -vm show on these machines ? From one of the servers that is having problems: 1 usersLoad 0.35

Very strange kevent problem possibly to do with vinum

I have a really really strange kevent problem(i think anyway) that has really stumped me. Here's the scenario: Three mostly identical servers running 5.2.1 or 5.3 (problem exists on both). All three running thttpd sending out large files to thousands of clients. Thttpd internally uses

em(4) VLAN + PROMISC still doesn't work with latest CVS version

I recently upgraded to 5.3 on a system, and manually upgraded src/sys/dev/em/* to the latest RELENG_5 versions. (1.44.2.4 of if_em.c) While the VLAN side of things works better than the stock 5.3 version, there still is this problem: ifconfig vlan1 create ifconfig vlan1 vlan 1vlandev em1

Re: Sendfile performance regression from 4.x to 5.x

though, the longer it runs the worse it gets. On May 16, 2004, at 12:27 AM, Kevin Day wrote: We've got two nearly identically configured servers, serving the exact same load. Quick config: Dual P4 2.8Ghz with HTT enabled, 2GB RAM ahc SCSI adapter, with 4 drives in a vinum RAID5 config Dual bge

Sendfile performance regression from 4.x to 5.x

We've got two nearly identically configured servers, serving the exact same load. Quick config: Dual P4 2.8Ghz with HTT enabled, 2GB RAM ahc SCSI adapter, with 4 drives in a vinum RAID5 config Dual bge gigabit network cards Server 1 is running 4.8 Server 2 is running 5.2.1 Other than OS

Re: DEVICE_POLLING with SMP

On Jan 29, 2004, at 1:04 AM, Vlad Galu wrote: I see no reason for it. Having to switch between multiple kernel threads to handle polling may bring too much overhead. Would that really be happening though? If polling is happening in the idle loop, extra overhead doesn't really matter all

DEVICE_POLLING with SMP

Has anyone made any headway with getting polling(4) to work with a SMP kernel? Last May this was discussed on here briefly with me, Luigi and Don Bowman, which seemed to indicate that the majority of what needed to be fixed to make this work would be some kind of locking in idle_loop to make

Traceroute through specific gateway/interface

Has anyone ever created a patch for traceroute that lets you force it to go through a specific interface, or use a certain gateway even if the routing table says otherwise? I know I can use source routing, but a good percentage of the routers on the internet drop source routed packets now.

Re: FreeBSD 4.7 and shapeing bridge

At 09:45 AM 12/6/2002, Bartlomiej Butyn wrote: Hi. I'm trying to configure shapeing bridge on FreeBSD and I have problems with putting packets to pipe with ipfw. My configuration is: %uname -a FreeBSD bridge1.milc.com.pl 4.7-RELEASE-p2 FreeBSD 4.7-RELEASE-p2 #0: Fri Dec 6 13:31:37 CET 2002

Packet forwarding overhead - with ipfw counting

I have a server acting as a router. Dual bge gigabit network interfaces (PCI-X), one is the WAN side the other is the LAN side. When we're pushing 250-300mbits through, we're using about 15% of its 2.4Ghz P4 Xeon CPU. All of it is in interrupt time... that seems a bit high, but that'll still