I have a core2duo at SoftLayer. MySQL 4.1.20.
I tried to add thread_concurrency=4 to my.cnf. I restarted mysqld, but thread_concurrency doesn't show up in "show variables".
Also, is TOP supposed to show the loads in each core separately?
what's the correct value for thread_concurrency in /etc/my.cnf if the processor is
Dual Processor Dual Core Opteron 270
is it 4 or 8?
It's recommended to make thread_concurrency = Number of CPU's x 2. But this is really effective with latest mysql5 versions?
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Default 10
Range 1-512
Why to set it to 8 (4 cpus), for example, if recommended default value is 10? And why to set such a low value if range is till 512?
Also, how to check assigned value as "show variables;" command omit this value.
setting up the MySql thread_concurrency variable on a Single-Processor Xeon 2.6ghz QuadCore .
Should it be 8 (num of cores * 2) ? or 4?
What is the difference between CentOs 5.0 and Centos 4.5? (Both contains Plesk)
Would CentOS 5 contain more updates and fixes? CentOS 4.5 be more stable?
Does it worth to upgrade cent os to latest version on server where is installed whm/cpanel?Could i request upgrade from cpanel support ?
View 3 Replies View Relatedwhich one do i have to choose?? and why?
my server is P4 3.6GHz HTT with 2GB RAM
I've made a how to, based on my personal knowledge about upgrading a CentOS 3, RedHat 9, or 8?, Fedora Core, and maybe others, to the new CentOS 4.5 OS. (or CentOS 4.x)
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Please post, comments, questions, etc. here.
I've myself upgraded many servers this way, (even, tonight, I upgraded another, so I finally decided to do this with all my notes)
linux and after several days testing different distributions and a bunch of different ways (e.g. freenx,vnc XFCE ...) I've decided to setup a vnc-server on CentOS-5-i386-minimal and use KDE as a desktop environment.
After reloading my vps with centos-5-i386-minimal, I logged in as root and executed:
Code:
yum update
yum -y groupinstall "KDE (K Desktop Environment)"
yum -y install vnc vnc-server firefox X11 xorg
I then added a user "abt" and set the password. Then I logged in as abt and execute : vncserver, it asked for the password and created the appropriate .vnc directory and files.
I then edited xstartup file and replaced "twm &" with "startkde &" and executed vncserver once again, this created desktop number 2 for me.
The problem is that after running TightVNC(on vista) and entering IPNUMBER:2, It successfully connects to vnc-server but what i get is a black screen with X cursor!
i have a colo server, lately im having problem, every 2-3 oclock in the morning my server crash, i asked the server management to have a look at it but no luck, they install rpm, reduce the http max, etc, etc ( i dont want to mention the name since my server management have helped me alot and its not fair for them if i speak a bad thing about them ) anyway,
I bought the server from siliconmechanics iServ R254
CPU: 2 x Intel Xeon E5410 Quad-Core 2.33GHz, 12MB Cache, 1333MHz FSB, 45nmHi-k
RAM: 12GB (6 x 2GB) DDR2-667 Registered ECC - Interleaved
NIC: Intel 82573V & 82573L Gigabit Ethernet Controllers - Integrated
Hot-Swap Drive - 1: 150GB Western Digital Raptor (1.5Gb/s,10Krpm,16MB Cache,NCQ) SATA
Hot-Swap Drive - 2: 500GB Seagate Barracuda ES.2 (3Gb/s, 7.2Krpm, 32MB Cache, NCQ) SATA
Optical Drive: Low-Profile DVD-ROM Drive
Power Supply: 520W Power Supply with PFC - 87% Maximum Efficiency
Rail Kit: 2-Piece Ball-Bearing Rail Kit
OS: CentOS 5 - 64-bit - Preload, No Media
Warranty: Standard 3 Year - Return to Depot - Advanced Component Exchange
Configured Power: 255 W, 262 VA, 871 BTU/h, 2.4 Amps (110V), 1.3 Amps (208V)
Im using CENTOS 5.2 x86_64
i check on the message log, this is the error before crash
hdc: status timeout: status=0xd0 { Busy }
ide: failed opcode was: unknown
hdc: no DRQ after issuing MULTWRITE_EXT
ide1: reset: success
hdc: status timeout: status=0xd0 { Busy }
ide: failed opcode was: unknown
hdc: no DRQ after issuing MULTWRITE_EXT
ide1: reset: success
hdc: status timeout: status=0xd0 { Busy }
ide: failed opcode was: unknown
hdc: no DRQ after issuing MULTWRITE_EXT
ide1: reset: success
Motherboard manual
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i read on centos forum its a problem with the drive - the 500 gigs( the server read my hd as ATA instead of ATA )
i tried to go to BIOS and change to AHCI but server doest recognize the drive
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Is there really no package in yum for APC (Alternative PHP Cache)? Everything I'm seeing suggests I build it from source.
Is this the way to go? I can, it just seems unlikely to me that there's no build of it.
is there any GUI ( pre installed ) in centOS 4 ..
if yes, how can we access it,
if no, how can we install GUI and access it...
Will be reloading server OS and wondering with which one of those should I go?
Now using 4.6
I have dedicated works on Centos 4. Now I have to reinstall OS. Administrators recommend me to put again Centos 4 and I would like to install Centos 5. Would like to hear opinion of professionals what it is better to put?
View 12 Replies View Relatedhow to find OS crash logs or apache crash logs. My server keeps dying every night and I need to know where and how to find out why it is doing this.
View 1 Replies View RelatedI've just leased my first dedicated server from managemybox, which has come loaded with centos 4.5.
I need to install all the ffmpeg/transcoding junk - something I've done before...
...but now, I'm having huge issues. Yum and up2date don't seem to have *any* idea of where anything, from ffmpeg to flvtool2 is.
I'm crap at quite a bit (read most) of the command line stuff. Whadddoo I need to do? Why is yum telling me there are no matches for the damn stuff?
How can I get from A to B properly without the hassle?
I did have a VPS before, with memset.com - and all this stuff installed fine on Fedora 4 (it was a VMWare based VPS so everything worked, unlike the Xen based ones I've experienced).
How to install yum in CentOS 5?
View 5 Replies View RelatedI have core2quad box with 4GB RAM, when i try install CentOS 5.0 on it then it show 3GB RAM only, and CPU just show:
Quote:
Processor #1 Vendor: GenuineIntel
Processor #1 Name: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz Processor #1 speed: 1596.000 MHz Processor #1 cache size: 4096 KB
Since the last 6 days ive been trying but dunno how to fix it.
Thing is i want to install vnc on my server.
Therefore i googled some tuts and managed to get things done after some days.
Steps i took.
yum -y groupinstall gnome
yum -y install vnc vnc-server firefox x11-xorg
vncserver
--------------------------------------------------------------
--------------------ERRORS I AM GETTING-----------------------
--------------------------------------------------------------
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
xauth: creating new authority file /root/.Xauthority
sh: cannot redirect standard input from /dev/null: No such file or directory
New 'server.xnwo.net:1 (root)' desktop is server.xnwo.net:1
Creating default startup script /root/.vnc/xstartup
Starting applications specified in /root/.vnc/xstartup
Log file is /root/.vnc/server.xnwo.net:1.log
sh: cannot redirect standard input from /dev/null: No such file or directory
[root@server ~]#
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
and when i connect using vnc viewer, i get this grey background and a box on the top left. has it been installed correctly? any other steps needed?
Here is the screenshot of the background i see when connecting.
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I would like to get a second opinion on this. I was going to put CentOS 64 bit on my server but I have been told to put the 32 bit version on it instead because it is a more stable version. I have never heard this before and am new to doing colo and would like to verify this before I end up doing something I may forget?
View 14 Replies View RelatedI have been using Centos for several years but have not been a user long enough to see what happens when the new version comes out.
I expect Centos 4 will be around a while however how quickly are hosting companies planning to adopt Centos 5?
I've recently started using apt on centos, using the tutorial I found on dag's site. So far I'm enjoying it, since I have years and years of experience running debian unstable.
Are there any caveats? Has anyone here tried doing a dist-upgrade to a new version (say CentOS 5)?
whats the difference with 32bit centos and 64 bit
I heard 64 bit gives better Mysql Performances but if I get 64 bit will I be able to use the same stuff I use on my 32 bit currenty?
Like directAdmin, APF firewall etc.., Just few from top of my head.
Why does CentOS come w/ such an outdated PHP package? IS it modified to fix the bugs, but the version number stayed the same?
I would like to upgrade to PHP 4.4.6 - are there any issues I should be aware of? This is my 1st Linux box and installing software is not something I am really comfortable with yet.
I have got a KVM swith to connect centos and windows2003 server, windows loading fine, but when I change it to linux os, it says out of range. How can I fix it?
View 2 Replies View Relatedis there anyone installing DKIM on CentOS? I am really confused how to do after reviewing ....
View 3 Replies View RelatedLast night my server was updated to Centos 5.4 via yum update command.
Is it recommended to restart the server after this update or it is fine to let it run ?
.. there is also Cpanel on it,
im running centos and have a fairly high-end server. yet my services seem to be running a bit sluggish. is there a way to differntiate if its the server or the connection?
using free -m -t im only using half of my ram
(i dont know the command to check how much of my processors im using). im going to assume that that is also 50% or below. if any one has this command please let me know. if its not either of those im guessing its either bad routing be bounced everywhere, or some more localize like datacenter issue, bad router or something.
on a side note whast the command to restart sftp?
I am getting more into it and looking for the best way to harden it and secure it. Also some information about what processes to turn off and how to better setup my IP Tables.
View 8 Replies View RelatedWhat is the best anti virus FOR CENTOS 5.3. Installation and configuration of the way I can help.
Exactly and free anti virus and non-free 2 per model names.
Does CentOS 5.3 support ICH9R onboard raid? I want to use the onboard on a X7SBi SM board if I can.
View 0 Replies View Related