Re: Network Performance Degrading over random amount of time

2014-04-26 Thread h
Am 2014-04-22 10:38, schrieb h...@xx0r.eu: Am 2014-04-20 23:49, schrieb Karl E. Jorgensen: Hi On Sun, Apr 20, 2014 at 01:01:53PM +0200, h...@xx0r.eu wrote: Hi List, maybe you have a clue about the issues im having since several months. My Homeserver is running Debian Jessy right now, the

Re: Network Performance Degrading over random amount of time

2014-04-26 Thread h
Am 2014-04-26 12:44, schrieb h...@xx0r.eu: Am 2014-04-22 10:38, schrieb h...@xx0r.eu: Am 2014-04-20 23:49, schrieb Karl E. Jorgensen: Hi On Sun, Apr 20, 2014 at 01:01:53PM +0200, h...@xx0r.eu wrote: Hi List, maybe you have a clue about the issues im having since several months. My

Re: Network Performance Degrading over random amount of time

2014-04-26 Thread Karl E. Jorgensen
Hi On Sat, Apr 26, 2014 at 01:01:25PM +0200, h...@xx0r.eu wrote: Am 2014-04-26 12:44, schrieb h...@xx0r.eu: Am 2014-04-22 10:38, schrieb h...@xx0r.eu: Am 2014-04-20 23:49, schrieb Karl E. Jorgensen: Hi On Sun, Apr 20, 2014 at 01:01:53PM +0200, h...@xx0r.eu wrote: Hi List, maybe you have

Re: Network Performance Degrading over random amount of time

2014-04-22 Thread h
Am 2014-04-20 23:49, schrieb Karl E. Jorgensen: Hi On Sun, Apr 20, 2014 at 01:01:53PM +0200, h...@xx0r.eu wrote: Hi List, maybe you have a clue about the issues im having since several months. My Homeserver is running Debian Jessy right now, the network issues where there with wheezy aswell.

Re: Network Performance Degrading over random amount of time

2014-04-21 Thread Javier Barroso
Hello, On Sun, Apr 20, 2014 at 1:01 PM, h...@xx0r.eu wrote: Hi List, maybe you have a clue about the issues im having since several months. My Homeserver is running Debian Jessy right now, the network issues where there with wheezy aswell. after a fresh boot my network behaves like it

Network Performance Degrading over random amount of time

2014-04-20 Thread h
Hi List, maybe you have a clue about the issues im having since several months. My Homeserver is running Debian Jessy right now, the network issues where there with wheezy aswell. after a fresh boot my network behaves like it should archiving near gbit speeds which is nice, after a random

Re: Network Performance Degrading over random amount of time

2014-04-20 Thread Eero Volotinen
- TP-Link 8-Port gbit switches (2 of em between home-server and clients) Try replacing this component with real quality switch like hp. -- Eero

Re: Network Performance Degrading over random amount of time

2014-04-20 Thread h
Am 2014-04-20 13:33, schrieb Eero Volotinen: - TP-Link 8-Port gbit switches (2 of em between home-server and clients) Try replacing this component with real quality switch like hp. As i wrote, i already tryed to eliminate the switches as cause by crosslinking my client(s) with my server,

Re: Network Performance Degrading over random amount of time

2014-04-20 Thread Chris Angelico
On Sun, Apr 20, 2014 at 9:01 PM, h...@xx0r.eu wrote: Ive tried diffrent things so far: - Switched from a switched cabling setup to Crosslink. - Swapped out the cheap asrock motherboard with asus - Changed from onboard realtek network chip to PCI Intel Gbit card - Reinstalled OS several

Re: Network Performance Degrading over random amount of time

2014-04-20 Thread h
Am 2014-04-20 19:15, schrieb Chris Angelico: On Sun, Apr 20, 2014 at 9:01 PM, h...@xx0r.eu wrote: Ive tried diffrent things so far: - Switched from a switched cabling setup to Crosslink. - Swapped out the cheap asrock motherboard with asus - Changed from onboard realtek network chip to PCI

Re: Network Performance Degrading over random amount of time

2014-04-20 Thread Chris Angelico
On Mon, Apr 21, 2014 at 4:38 AM, h...@xx0r.eu wrote: Am 2014-04-20 19:15, schrieb Chris Angelico: Crazy-stupid idea, but is it possible there's some other traffic happening? Pull up a monitor (gnome-system-monitor has a nice graph, or you can just watch the numbers in ifconfig or equivalent)

Re: Network Performance Degrading over random amount of time

2014-04-20 Thread Karl E. Jorgensen
Hi On Sun, Apr 20, 2014 at 01:01:53PM +0200, h...@xx0r.eu wrote: Hi List, maybe you have a clue about the issues im having since several months. My Homeserver is running Debian Jessy right now, the network issues where there with wheezy aswell. after a fresh boot my network behaves like it

RE: Slow network performance with KVM

2012-12-19 Thread Katynski, Bogdan
-Original Message- From: Bob Proulx [mailto:b...@proulx.com] Sent: Tuesday, December 18, 2012 8:27 PM To: debian-user@lists.debian.org Subject: Re: Slow network performance with KVM You might also want to try the backported newer versions of libvirt-bin kvm packages

RE: Slow network performance with KVM

2012-12-18 Thread Katynski, Bogdan
-Original Message- From: Bob Proulx [mailto:b...@proulx.com] Sent: Monday, December 17, 2012 8:15 PM To: debian-user@lists.debian.org Subject: Re: Slow network performance with KVM I forgot that this module is only available in later kernels! Sorry. It does not appear in Squeeze

Re: Slow network performance with KVM

2012-12-18 Thread Bob Proulx
improvements. I don't recall but it is likely that in order to use the vhost-net driver that the newer kvm and related packages are required. I do know that I had a large network performance difference between using the vhost-net driver and not using it. I would need to set up a test case and benchmark

RE: Slow network performance with KVM

2012-12-17 Thread Katynski, Bogdan
-Original Message- From: Bob Proulx [mailto:b...@proulx.com] Sent: Saturday, December 15, 2012 5:54 AM To: debian-user@lists.debian.org Subject: Re: Slow network performance with KVM Katynski, Bogdan wrote: I noticed a rather poor network guest-guest performance. Have you

Re: Slow network performance with KVM

2012-12-17 Thread Bob Proulx
Katynski, Bogdan wrote: Bob Proulx wrote: What is the output: $ lsmod | grep vhost_net I don't have the module loaded and what's worse - I don't have this module :( root@vmhost:~# modprobe vhost-net FATAL: Module vhost_net not found. ... I don't have these options In my kvm

Re: Slow network performance with KVM

2012-12-14 Thread Bob Proulx
Katynski, Bogdan wrote: I noticed a rather poor network guest-guest performance. Have you loaded the vhost-net kernel module? It is a huge lever for network performance. What is the output: $ lsmod | grep vhost_net Here are a couple of references: http://www.linux-kvm.com/content/how

Re: Very slow network performance with KVM using virtio and tap.

2011-04-13 Thread Robert Goley
Thanks for the links. I followed the first one when I set these up initially. I never got virt-install to work right. I create the xml file and the disk image manually. I then just use virsh for define, start and stop. My problem is the network performance is the same

Very slow network performance with KVM using virtio and tap.

2011-04-12 Thread Robert Goley
I have tried a KVM setup 2 different ways. The first was using a straight bridge without using tap at all. The WinXP VM is using the latest known version of the virtio drivers. The bridge is on a gigabit nic. The second setup was using a bridge containing a tap0

Re: Very slow network performance with KVM using virtio and tap.

2011-04-12 Thread Pablo Sánchez
Robert, following http://www.howtoforge.com/virtualization-with-kvm-on-a-debian-squeeze-server i reach to the conclusion that using kvm network config is "troublesome". I ended using "--network=bridge:br0 " on startup the vm, with qemu . Anyway, from another

Re: Network Performance Issues.

2007-04-16 Thread Alan Chandler
On Sunday 15 April 2007 16:20, Alan Chandler wrote: Firstly the case of direct downloading from my gateway. This is a summary of a three protocol exchanges using wireshark youtube-me http continuation seq 189688 next seq 191136 youtube-me http continuation seq 191136 next seq 192584

Re: Network Performance Issues.

2007-04-16 Thread Mike Bird
On Monday 16 April 2007 13:59, Alan Chandler wrote: It appears to be frameing errors at the ethernet level. I am not sure why forwarding packets causes the problem, but the wan interface shows approx 1% of all packets have frameing errors. Does anyone know what causes them 1% packet loss

Re: Network Performance Issues.

2007-04-15 Thread Celejar
On Sat, 14 Apr 2007 23:02:17 +0100 Alan Chandler [EMAIL PROTECTED] wrote: I have spent all day looking for clues as to how to debug network performance issues without success. Nobody seems to answered my previous post on this subject - so I thought I would try again. The problem I have

Re: Network Performance Issues.

2007-04-15 Thread Michael Pobega
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Sat, Apr 14, 2007 at 11:02:17PM +0100, Alan Chandler wrote: I have spent all day looking for clues as to how to debug network performance issues without success. Nobody seems to answered my previous post on this subject - so I thought I would

Re: Network Performance Issues.

2007-04-15 Thread Douglas Allan Tutty
On Sun, Apr 15, 2007 at 08:06:02AM -0400, Michael Pobega wrote: On Sat, Apr 14, 2007 at 11:02:17PM +0100, Alan Chandler wrote: Downloading a video from youtube onto Machine D's desktop I get a download speed of about 7Kbytes/sec. Which is very low. If I try to download the same one by

Re: Network Performance Issues.

2007-04-15 Thread Alan Chandler
On Sunday 15 April 2007 02:03, Mike Bird wrote: On Saturday 14 April 2007 15:02, Alan Chandler wrote: The problem I have is this. I have a linux desktop (machine D) siting on a LAN in my home. This is connected to a linux firewall/nat router (machine S) with two ethernet cards. One

Re: Network Performance Issues.

2007-04-15 Thread Mike Bird
On Sunday 15 April 2007 08:20, Alan Chandler wrote: Now when I look at a similar exchange when I am using the gateway machine just as a hop and there is a machine behind the gateway I get a different pattern youtube-me http cont seq 4344 next seq 5792 me-youtube tcp ack seq 5792 youtube-me

Re: Network Performance Issues.

2007-04-15 Thread Michael Pobega
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Sun, Apr 15, 2007 at 11:09:29AM -0400, Douglas Allan Tutty wrote: On Sun, Apr 15, 2007 at 08:06:02AM -0400, Michael Pobega wrote: On Sat, Apr 14, 2007 at 11:02:17PM +0100, Alan Chandler wrote: Downloading a video from youtube onto Machine

Network Performance Issues.

2007-04-14 Thread Alan Chandler
I have spent all day looking for clues as to how to debug network performance issues without success. Nobody seems to answered my previous post on this subject - so I thought I would try again. The problem I have is this. I have a linux desktop (machine D) siting on a LAN in my home

Re: Network Performance Issues.

2007-04-14 Thread Ananda Samaddar
On Sat, 14 Apr 2007 23:02:17 +0100 Alan Chandler [EMAIL PROTECTED] wrote: I have spent all day looking for clues as to how to debug network performance issues without success. Nobody seems to answered my previous post on this subject - so I thought I would try again. The problem I have

Re: Network Performance Issues.

2007-04-14 Thread Douglas Allan Tutty
On Sat, Apr 14, 2007 at 11:02:17PM +0100, Alan Chandler wrote: I have spent all day looking for clues as to how to debug network performance issues without success. Nobody seems to answered my previous post on this subject - so I thought I would try again. The problem I have is this. I

Re: Network Performance Issues.

2007-04-14 Thread Mike Bird
On Saturday 14 April 2007 15:02, Alan Chandler wrote: The problem I have is this. I have a linux desktop (machine D) siting on a LAN in my home. This is connected to a linux firewall/nat router (machine S) with two ethernet cards. One links out to the internet, the other connects to the

Re: Network Performance Issues.

2007-04-14 Thread Jeff D
On Sat, 14 Apr 2007, Alan Chandler wrote: I have spent all day looking for clues as to how to debug network performance issues without success. Nobody seems to answered my previous post on this subject - so I thought I would try again. The problem I have is this. I have a linux desktop

Re: Strange network performance

2001-09-24 Thread Robert Waldner
On Sun, 23 Sep 2001 22:12:43 BST, Matthew Sackman writes: using original natsemi-driver from scyld.com Well, that's all gone through and worked - not quite as simple as I thought, but I got there. Network performance seems a little faster than before but still a little slow compared with what I

Re: Strange network performance

2001-09-24 Thread Matthew Sackman
through and worked - not quite as simple as I thought, but I got there. Network performance seems a little faster than before but still a little slow compared with what I thought would have been possible with a 100TX crossover network. Must be a limitation of the cheap cards. Thanks for your

Re: Strange network performance

2001-09-24 Thread Matthew Sackman
Ah ha! Things are not as bad as they seem. If I do cat /dev/zero | nc -u -p 1666 doris.namkas 1666 and set up doris.namkas to receive correctly then knetload reports around 98000KBit/s which doesn't seem too bad. Doing it the other way round reports the same (ish, though in this case, the

Re: Strange network performance

2001-09-24 Thread Robert Waldner
On Mon, 24 Sep 2001 21:12:16 BST, Matthew Sackman writes: Ah ha! normally I´d snipped that, but..oh, so nice ;-) Things are not as bad as they seem. If I do cat /dev/zero | nc -u -p 1666 doris.namkas 1666 and set up doris.namkas to receive correctly then knetload reports around 98000KBit/s

Strange network performance

2001-09-23 Thread Matthew Sackman
Hay Guys, I've just set up a 100TX network with 2 computer both running debian. Netgear FA311 cards and a single cross-over cable. Generally it runs well, but occasionally I get weird freezed - using dselect via an ssh session suffers from freezing of the session for a minute or two every now

Re: Strange network performance

2001-09-23 Thread Noah Meyerhans
On Sun, Sep 23, 2001 at 06:36:05PM +0100, Matthew Sackman wrote: I've just set up a 100TX network with 2 computer both running debian. Netgear FA311 cards and a single cross-over cable. What version of the kernel are you running? If it's 2.4, are you running the natsemi driver included with

Re: Strange network performance

2001-09-23 Thread Matthew Sackman
Yes, it's a 2.4.9 kernel on both machines with the included natsemi driver. dmesg reports much the same for both machines: eth0: link is back. Enabling watchdog. eth0: Setting full-duplex based on negotiated link capability. eth0: Link changed: Autonegotiation advertising 05e1 partner .

Re: Strange network performance

2001-09-23 Thread Matthew Sackman
Well, that's all gone through and worked - not quite as simple as I thought, but I got there. Network performance seems a little faster than before but still a little slow compared with what I thought would have been possible with a 100TX crossover network. Must be a limitation of the cheap cards

Re: Strange network performance

2001-09-23 Thread Charles Franks
- Original Message - From: Matthew Sackman [EMAIL PROTECTED] To: Noah Meyerhans [EMAIL PROTECTED]; Debian User List debian-user@lists.debian.org Sent: Sunday, September 23, 2001 2:12 PM Subject: Re: Strange network performance Well, that's all gone through and worked - not quite as simple as I thought

Re: Strange network performance

2001-09-23 Thread Jason Boxman
) and they actually perform better when set to 100/half. Charles - Original Message - From: Matthew Sackman [EMAIL PROTECTED] To: Noah Meyerhans [EMAIL PROTECTED]; Debian User List debian-user@lists.debian.org Sent: Sunday, September 23, 2001 2:12 PM Subject: Re: Strange network performance

network performance

2001-05-30 Thread Alexander Gun
how can i test my network performance without copying one file from maschine a to maschine b ? i dont want to test my harddrive speed!! is there a tool out? give me ideas... thanks a lot ag -- in a world without fences --- who needs gates

Re: network performance

2001-05-30 Thread John Galt
On Wed, 30 May 2001, Alexander Gun wrote: how can i test my network performance without copying one file from maschine a to maschine b ? bing, ping, sing, depending on what your needs are... i dont want to test my harddrive speed!! is there a tool out? give me ideas... thanks a lot ag

Re: network performance

2001-05-30 Thread Colin Watson
Alexander Gun [EMAIL PROTECTED] wrote: how can i test my network performance without copying one file from maschine a to maschine b ? i dont want to test my harddrive speed!! Set up a web server on one machine and download several large files simultaneously from it on the other. After each file

Network Performance

2000-08-12 Thread Patrick Dahiroc
hi all what tools/method would one use to evaluate the performance of a network? i'm mostly interested in tracking down bottle-necks in the network. -- As a general rule, if you have trouble with the binary system, then probably it is because you do not really understand the decimal