similar to: 3.0.2 + Hyperthreading ?

Hi, I can''t get rid of an annoying domU machines hanging issue with Hyperthreading enabled in my BIOS. Hardware config: IBM x325 series 2 * CPUs Intel Xeon 3.06 Ghz Xen version: 3.0.0 Kernel version: 2.6.12.6 Linux distrib: Debian Sarge 3.1 r1 I run 1 domU machine on my dom0, here is my Xen config: . xen0: /etc/xen/xend-config.sxp : (dom0-num-cpus 0) .

Hi, with regards Intels L1TF vulnerabilities, it seems they are somewhat non-committal on whether turning off HyperThreading is required, suggesting people > Consult with your hypervisor vendor for more guidance. https://www.intel.com/content/www/us/en/architecture-and-technology/l1tf.html#faq-answers-10-0 What is the consensus in the Libvirt community about the risks (or not) of leaving

That's the problem we had with Asterisk and HT on a 2.4 Kernel: whenever Asterisk was staying in the RTP stream, and HT was enabled (on a Dell Dual Xeon system), we had choppy audio. After disabling HT, everything was fine again. Nothing measurable, indeed, but you could definitely hear it. So there *must* be something. -Manuel -----Messaggio originale----- Da: Peter Corlett

I am running irqbalance with default configuration on an Atom 330 machine. This CPU has 2 physical cores + 2 SMT (aka Hyperthreading) cores. As shown below the interrupt for the eth0 device is always on CPUs 0 and 1, with CPUs 2 and 3 left idle. But why? Maybe irqbalance prefers physical cores? My understanding, though, is that the even-numbered CPUs are the physical cores, with the

>but if I disable hyperthreading (noht on the kernel line in lilo/grub) Could the same result could be obtained if hyperthreading is disabled from the BIOS ? Supermicro Motherboards (most Phoneix based) have this option Also, would we see same pops and clicks in a dual CPU box (Zeon) then ? SW Message: 1 Date: Wed, 07 Jan 2004 14:32:16 -0500 From: Jeremy McNamara <jj@nufone.net> To:

Hello all, My machine is a dual xeon x5520 server with NUMA support. I have some question about xen dom0 kernel. Since xen hypervisor has provided vcpu schedule, do we need to compile the following feature in dom0 kernel? - Tickless System (Dynamic Ticks) - High Resolution Timer Support - AMD IOMMU support - SMT (Hyperthreading) scheduler support - Multi-core scheduler suppor

Hi, my video sharing website (politube.org) that I developed with rails, runs on lighttpd/fcgi (I know it is obsolete by now) and is severely under load and regularly blocks because the lighttpd process chews up 50% of RAM (1GB). So now I want to move the system to a new server with 8GB, 64bit , Quad core processor (intel i7 920) but I am not sure if hyperthreading will really do anything better.

I've to setup Asterisk on a Dell PowerEdge 1750 server. Its dual Xeon 3GHz with Hyperthreading. People on this list who have experience with this server please advise me how is the performance of Asterisk on this server, what flavour of linux is good on it etc. Is Hyperthreading going to be a problem or not. I once read somewhere that hyperthreading caused some voice quality problems in

I just tried to install CentOS (x86_64 4.4 and i386 4.3, not both at once, when I found the 64bit version didn't boot, I tried the 32bit version, same result) on a dual Naconda Xeon system. I get an OOPS just after the IDE info is printed on the screen during boot (this is booting off the CD during the install phase). After mucking about with the bios settings (and many reboots later), I

My Dell 2800 Dual 64bit Proc. machine came in with hyperthreading enabled. (they call it virtual processor??) I have been intending for a month to disable it. Tonight, I rebooted, turned it off, and let the system come up. zaptel loaded and asterisk loaded, but both of my t1s were red. (it is a TE411P) /proc/interrupts looked OK, zttest gave OK numbers. I doublechecked all of the files in case

Hi, I have been trying to get Hyperthreading to work in a Windows HVM on Xen 4.1.2 as described in ''xmexample.hvm''. I think I have set it up correctly, but I can''t seem to get it to work. There is not much documentation on it and most topics are from years ago. I''m curious to know to whether this functionality is still supposed to work. I''m aware that

Hi, next step, # dmesg | grep pciback Bootdata ok (command line is root=/dev/sda2 ro console=tty0 pciback.hide=(0000:02:05.0)(0000:02:06.0)(0000:02:07.0)(0000:02:08.0)(0000:02:09.0) ) Kernel command line: root=/dev/sda2 ro console=tty0 pciback.hide=(0000:02:05.0)(0000:02:06.0)(0000:02:07.0)(0000:02:08.0)(0000:02:09.0) Unknown boot option

Are they any issues still with hyperthreading processors, I've read and been told by a few people to make sure its disabled in bios if I want to use * on a hyperthreading machine. Kind Regards, Chris Bond

Hi, All: Does the guest OS need to detect hyperthreading? One would think that the hypervisor decides what to schedule on what CPU, and the job of the guest is not to be too smart for its own good. So, my first reaction was to comment detect_ht() altogether. Fedora Core 5 has the code in detect_ht(), though I have no idea what the results of this are on HT CPUs, if they match the reality.

Hello, I read an interesting article on 2cpu.com that talks about the performance differences between a P4 processor with Hyperthreading(HT) enabled and disabled. http://www.2cpu.com/articles/ht_explored/index.html The bottom line of the article is that processor intensive applications greatly benefit from HT being enabled, but memory intensive applications can actually see a slight decrease in

Hi all Intel QA team did a full testing agianst xen unstable 14201 this week. In the testing we ran all our tests for device model,control panel, guest installation, and xen function on x86p,x86_64 and IPF. Here is the testing report: ######################################################################## ### Summary: Totally 12 new issues have been found (11 for x86, 1 for IPF): x86: 1. Mouse

Hi, Anyone know how to compile asterisk for a hyperthreaded processor? Thnx

Just gave 3.0 a spin. Had been running 2.0.7 for the past 3 months or so without problems (aside from intermittent failure during live migration). Anyway, 3.0 seems to have an issue with my machine. It starts up the 4 domains that I''ve got defined (was running 6 user domains with 2.0.7, but two of those were running 2.4 kernels which I can''t seem to build with Xen 3.0 yet, and

Hello! I runned the following command WINEDEBUG=+rellay wine app.exe and in log message strings that are bigger are truncated. It is a way to configure somethink to log entire strings?

All, I seem to be experiencing the same problem that Michal Urbanski talked about in an email dated March 24th with a subject of "hanging dell hardware". Looking through the archives I can not find any resolution to the problem. The specs on my machine are Dell Poweredge 1850 Dual Xeon 2.8s 1gig ram PERC 4e/SI raid controller in mirror configuration with 2 73 gb drives (uses the