similar to: Is NUMA working correctly?

Hi Everyone, I am running 3.2.1 on Centos 5.2 with HAP enabled, NUMA enabled, ACPI enabled and the dom0 allocated 512Mb. I have setup a single core 1Gb VM for performance testing under Windows 2008 Server. Most CPU results are within a few percent of theoretical max but Memory performance is about half what I expected. I get 3.22Gb/Sec Sandra 2009 Memory performance for a single Opteron 8350

I was wondering if anyone has managed to get a trusted certificated to work with Xen''s Encrypted VNC and Vencrypt? I can generate my own cert with Certtool and this works but as expected I get warnings from Vencrypt: "Certificate Issuer Unknown" "Certificate Not Trusted" "Hostname Mismatch" After some time working with my Cert provider I have a CA signed

Hi Jan, I asked almost the exact same question as you about 6 months ago and someone provided some Gen4 results for me (But I can''t seem to find them in email), they were a fair bit better than Gen3. With IPOIB, you want connected mode and a large 32Kb+ MTU for max bandwidth, 1Gbyte/sec or more should be possible with Gen 4. Here are some of my original test results on my Opteron

I need to import a VM in OVF format (Using Xen 3.3.0 on Centos 5.2). I found this: http://sourceforge.net/projects/open-ovf/ But don''t really know where to start. Does anyone have any tips? Thanks, Rob The SAQ Group Registered Office: 18 Chapel Street, Petersfield, Hampshire. GU32 3DZ SEMTEC Limited trading as SAQ is Registered in England & Wales Company Number:

Hi Everyone, I''m using a Xen 3.30 on Centos Dom0 setup with two bridges, one for WAN and One for LAN (Both are on separate physical NICs within Dom0). I can use a 2 NIC setup with Server 2003 Pure HVM fine. A single NIC setup works fine with the Pre3 drivers but as soon as I add the second NIC the system hard locks within a few seconds of networking coming up. Both NICs looks fine from

I have an error in my dmesg system log about hpet not correctly enabling: hpet_acpi_add: no address or irqs in _CRS The same kernel without Xen enables it fine: hpet0: at MMIO 0xfed00000 (virtual 0xffffffffff5fe000), IRQs 2, 8, 31 hpet0: 3 32-bit timers, 25000000 Hz hpet_resources: 0xfed00000 is busy Do I have to pass an additional boot option? (ACPI is already enabled) or is there

Hi All, I''m trying to choose between 10Gb Ethernet cards for Xen. The trouble is I''m getting quite confused with all the different terms different companies use to describe NIC''s virtualization support. Any ideas what the differences are between these brands? I am trying to sort a comparison table but will need some help: Feature Intel ET Series Mellanox

Has anyone tried PCI pass-through with this card? Can you pass-through individual ports to different VMs? Thanks, Rob The SAQ Group Registered Office: 18 Chapel Street, Petersfield, Hampshire GU32 3DZ SAQ is the trading name of SEMTEC Limited. Registered in England & Wales Company Number: 06481952 http://www.saqnet.co.uk AS29219 SAQ Group Delivers high quality, honestly priced

Hi Ola, There was some code done by IBM a few years ago in conjunction with a University that worked and showed the benefits but AFAIK it was never integrated into Xen. The research paper is around on the web. A few of us requested RDMA migration support for version 4.0 and it is at the top of the request list, I suspect it is probably a case of enough people asking and Citrix approving.

The subject says it all really, I''m pretty sure the system and bios are NUMA aware but I''m not sure if it''s enabled? Is it supported in 3.2.1 stable? Thanks, Rob \ \/ /___ _ __ |___ / |___ \ / | \ // _ \ ''_ \ |_ \ __) | | | / \ __/ | | | ___) | / __/ _| | /_/\_\___|_| |_| |____(_)_____(_)_| (XEN) Xen version 3.2.1

Hi everyone, This is my first attempt at a PV guest install from scratch and I''m a tad confused. Have I answered one of the questions virsh-install asks wrongly? Does anyone know of a general guide for installing PV guests with virsh-install? (Most Centos docs seem to use the GUI based virt-manager and I only have command line access). Am I meant to make use of the files here:

I am trying to get PV drivers running on both Centos 5.1 and Centos 5.3 HVMs, my DomU is Centos 5.2 with Xen 3.31. For 5.1 I install the kmod-xenpv RPM but for 5.3 the drivers seem to be built-in. For the network drivers to work I had to unload the Realtek NIC driver and renamed its .ko files to stop it loading. Adding the Xen-Vnif alias to modprobe.conf then got the PV NICs working nicely (Much

Sorry to have so many questions but I seem to have quite a few mini problems with my first Xen setup. My xen server works fine with Powernow on the standard Kernel but with the Xen kernel it fails. Does anyone know why? Details below. With Standard Kernel powernow-k8: Found 2 Quad-Core AMD Opteron(tm) Processor 8350 processors (8 cpu cores) (version 2.20.00) powernow-k8: 0 : fid 0x0

I have been using the built in Xen Paravirt NIC drivers for paravirt networking and had bad performance until I disabled all offload setting on the bridge and paravirt nic (From Dom0). There are 2 related questions I have, where should I be tweaking the offload settings, the Dom0 Physical NIC, The Bridge or the DomU NIC? Which settings in particular tend to cause trouble? (I just disabled all of

I was wondering if anyone is running Quagga on Xen? What is throughput/latency like? Was looking for about a gig of mixed packet size BGP throughput. Hardware is Opteron 4 Way Quad cores, was thinking paravirt with a couple of dedicated cores and maybe the addition of Solarflare 10GB Direct IO NICs might give the required performance level but I am unsure. The other option is multi-queue Intel

Hi Everyone, I''m trying to get Xen to use a native DRBD device but it seems it will not create the virtual machine. It does not seem to like the DRBD device type, any ideas on what might be wrong? I''m pretty sure my xen config file is OK and the DRBD device looks fine too. Full details below. xm create centostest Using config file "./centostest".

i''m reading up on numa usage. so far, i''ve enabled numa on my Xen box. @ Dom0 i see, xm dmesg | grep -i numa (XEN) Command line: ... numa=on ... (XEN) No NUMA configuration found i guess i need to ''configure'' numa. i''ve no clue how, and haven''t found the docs for it yet, despite looking. i found this old thread,

Can anyone give me some recommendations for IP phones that work well with Asterisk? I'm hoping for something not much more then $100 bux or so. Also does vonage service work directly through Asterisk or would I have to use their hardware? Or are there any other suggestions for a VoIP provider? Thanks for the help! Nihal -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.2.3

Is there any phone SIP, FXS, etc. that works with asterisk that will show if extensions or FXO's are in use? I want to be able to see what lines are being used so I can decide if I want to pickup on them, and also see who's on the phone. Is this possible with Asterisk? The only thing I can come up with is maybe getting SIP phones that have builtin web browsers. Then making a web page

I've freshly installed Asterisk on a Fedora C2 machine. Dual P4's, 2GB RAM. 15KRPM Drive. Using the default configs and added one Soft Sip phone. While listening to the demo the quality isnt very good. It's kind of crackly and skips a bit. Should the sound be better or is that just what you get using IP phones/Asterisk? (I ran the X-Lite phone). Nihal -----BEGIN PGP PUBLIC KEY