similar to: Intel Xeon and hyperthreading

Don't know if this might be hardware or software related, but it seems that every time I attempt to do a remote reboot of the machine, everything shuts down normally, and it never comes back. Just returned from the co-lo site, and when I plugged the monitor in, it had gone to the point of "rebooting" and hung. This is 4.3 on x-86. Sam -- Sam W.Drinkard -- sam at wa4phy.net

I know this is more of a general unix question, but the thread about the last kernel update, and memory usage got me to looking and thinking. Given a system with 2 Gb of memory, and at peak usage, top reports considerably less than the 2 gig amount in use, as well as system monitoring that never shows all available memory used, what would happen if you just turned swap off, and let memory

This is really strange. Day before, I updated the machine here (x86_64) and all went normal. I rebooted, and everything came back just as I expected. Next morning, I noticed one of my jobs during the night had finished, but finished late by about 8 or 9 minutes. I really didn't think much of it, but after looking at jobs running today, I'm seeing the same thing. Processes that

Rats... found some hardware monitoring from the vendor and it's broken, or I'm missing some pieces. No mention of CentOS specifically, but RH is supported, so figured it *ought* to work. I'm apparently missing a library -- liblinc.so.1, and a net search reveals several sources, both for x86 and 64-bit. Tried them both, after the x86 did not work, and the 64-bit I thought was

Could someone give me some assistance in getting this startup script to conform to chkconfig and such where the service will start up after networking comes up, and then shut down when networking goes away? Where all do entries need to be made, and what would they consist of? Many thanks..... Sam ------------------------------------------------------------------------ #! /bin/sh export

Hi, Anybody have success with postgresql 8.1.3 on a new Intel OS X box? All hints welcome, please! I installed postgres 8.1.3 via darwinports, and everything is great until the initdb step. Initdb fails on shmget saying it couldn''t allocate enough memory (see below). So, I edited /etc/rc and increased kern.sysv.shmmax from 4194304 to 41943040 (4MB to 40MB) After reboot and

>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:

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

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 can't resist. Read the thread that was pointed to on lkml. ROTFLMAO. *Real* UNIX addressed these problems long ago. I guess the "Gurus" suffer from NIH (Not Invented Here) syndrome. Given a "general purpose" system, tunability is a must. UNIX, as delivered by USL in such examples as Sys V, had tunables that let admins tune to their needs. A single "swappiness"

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

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, 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, I have two boxes with 2 * Xeon 3.0 Ghz I''ve enabled Hyperthreading in the BIOS. - One box is with Xen 3.0.1 I''ve enabled SMP + SMT in my kernel Xen0 config, and SMP + SMT works perfectly. I can see 4 cpus in my VCPU list for Domain0, and I see also 4 CPUs in the /proc/cpuinfo file. - One box is with Xen 3.0.2 I''ve enabled SMP in my kernel Xen0 config, and SMT has

Hi all, Just a couple of quick questions. I have a HP DL360 G4 (dual 3.0Ghzprocessors). The processors are EM64T. I am using a TE411P in the system. 1. Should I run the a x86_64 Linux (CentOS) or just go with the plain old 32 bit version? 2. This being a dual processor system, should I turn on or off hyper thrreading? Thanks..... -------------- next part -------------- An HTML attachment was

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

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, 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.

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) .