| OpenVZ container network speeds [message #50260] |
Thu, 08 August 2013 15:34  |
peanuthost
Messages: 5
Registered: August 2013
Location: United Kingdom
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Junior Member |
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Hi guys,
Not sure how to explain this issue but ill be blunt and to the point,
I have a HN E3-1240v3 CPU, 32G ECC Ram, 8 x 512 Sammy 830 Series SSD running arc 1222 raid controller which is utilising 4 x 1 Gbit connection in bond0.
Network speeds are erratic they are up and down like god knows what one minute they can be 100MB/s next minute they are 2MB/s i've spent months looking for a reason as to why and i'm coming up with nothing, changed NIC's changed cables even changed switches. I asked SolusVM and get the same predefined responses so growing old of that.
ANY help or indication as to what may the issue be will be gratefully appreciated.
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| Re: OpenVZ container network speeds [message #50263 is a reply to message #50260] |
Thu, 08 August 2013 21:23  |
Paparaciz
Messages: 302
Registered: August 2009
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Senior Member |
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I can't help you much, but for thoughts:
what exactly kernel version you use?
do you use vswap configs for CTs?
do you see failcounter increase?
what distro is in CT?
do you tested problem with HN ( I assume you see problem only with CTs)
do you see same problem with stock kernel. You mentioned proxmox, so probably best way would be use rhel kernel (distributions centos, scientific linux), not debian.
maybe HN is running some network shaping stuff?
eliminate as mush as possible network hops (switches, routers, etc.)
as long as you can't exactly say how to reproduce problem it will be hard to solve problem.
btw, network equipment vendors and models can also help solve problem.
as example I recently debuged problem when in random times same file download with http had problems. problem was with cisco firewall and some settings.
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| Re: OpenVZ container network speeds [message #50270 is a reply to message #50265] |
Fri, 09 August 2013 21:05 |
Paparaciz
Messages: 302
Registered: August 2009
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Senior Member |
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peanuthost wrote on Fri, 09 August 2013 10:26
eliminate as mush as possible network hops (switches, routers, etc.) It is not the problem the problem is on the node.
can you explain what does it mean "problem is on the node"?
this network problems are on the same node? where problem is- between HN ant CT, between CTs? please give as much as possible details.
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| Re: OpenVZ container network speeds [message #50274 is a reply to message #50260] |
Sat, 10 August 2013 07:10 |
Paparaciz
Messages: 302
Registered: August 2009
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Senior Member |
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I don't work for openvz.
Now you are saying that with non openvz kernels everything works ok, that means you tested other kernels.
if you know that it is only openvz problem than submit a bug
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| Re: OpenVZ container network speeds [message #50275 is a reply to message #50274] |
Sat, 10 August 2013 09:24 |
peanuthost
Messages: 5
Registered: August 2013
Location: United Kingdom
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Junior Member |
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I never said i tested other kernels i said other servers i.e dedicated / shared / kvm dont have this issue so is it the OpenVZ kernel ? there is a difference between asking and telling my friend. i want support not a bug report. Hence me posting this in this thread i appreciate your help and all but it isn't creative 
[Updated on: Sat, 10 August 2013 09:25] Report message to a moderator |
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| Re: OpenVZ container network speeds [message #50285 is a reply to message #50260] |
Sun, 11 August 2013 04:27 |
Ales
Messages: 330
Registered: May 2009
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Senior Member |
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We'll you have tested something for 4 weeks (or even months?), as you say, while we haven't laid our eyes on it, not once. In the light of things, your posts aren't exactly full of information and test results.
If you're convinced it's the openvz kernel's fault, then you'll need to open a bug report to get this fixed, end of story.
If you're not completely sure, get us up to speed with as much information as possible and we'll invest our *free time* (as this is a community of openvz users) to help you out if we can.
What we know, so far:
- hw spec, mb, nic model etc.
- kernel version
- no network shaping used
- tested with and without vswap
- tested with several distros (as CTs, I assume)
- no failcount issues
- CT's have poor speeds to each other and in/out of network.
Ok, so:
- what OS do you use, vztools version?
- does the HN itself suffer from poor network speeds to the CTs and/or in/out of the network?
- did you try older or testing openvz kernels and if so, which ones?
- you mention more than one HN with similar symptoms, is the heardware/software the same or..?
- can you free this HN for testing?
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) 1 Vote
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