CentOS 5 :: Server Resources Are Slow?

Mar 1, 2011

I am not an expert and have only been managing my server not too long. My server is running kind of slow so someone suggested running the 'top' command via shell, and I found a few things using major resources, but I don't know what they are or how to fix them. can someone suggest some things.

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CentOS 5 Networking :: Can Ping Server Network But Cannot Share Resources

Feb 15, 2010

I have OpenVPN running successfully on a CentOS Linux server. All remote clients connect without a problem and can ping the server LAN (10.5.0.0/24) . The server address is
10.5.0.1. All network shares on the server are available to the remote clients via SAMBA shares and this works well.The problem is that I am unable to get the remote clients to access services on the LAN clients. For example, there is a webserver running on a Windows XP PC (on the server LAN @ 10.5.0.2) with no firewall enabled. The remote VPN clients can ping this webserver at 10.5.0.2, but cannot browse the webserver at [URL]. All clients on the server LAN can however browse the webserver. The remote clients are using Windows XP and VISTA with OpenVPN 2.1.1.

I am new to VPNs and networking, but from my research, it seems as if this may be a routing issue. I would appreciate any help you may give in getting the remote clients to access the services on the LAN clients (other than the server @ 10.5.0.1).

The server configuration is:

local 192.168.10.6
port 1194
proto tcp

[code]...

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CentOS 5 :: CentOS Server Command Line Very Slow?

Jul 14, 2010

Anyone know why my fresh installation of centOS server is so slow? Seems like it takes over a minute to execute a command, im not doing anything complicated either. Secondly, how come at times when I type reboot the machine starts to beep, one long loud annoying beep.

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CentOS 5 :: NetworkManager Can't Find Resources

Apr 2, 2009

I just installed CentOS 5.2 and then applied the updates to 5.3. Now I get repeated popups saying:

The NetworkManager applet could not find some required resources. It cannot continue.

I killed it and ran it from a terminal and saw the following output:

** (nm-applet:4648): WARNING **: Icon nm-device-wwan missing: Icon 'nm-device-wwan' not present in theme
** (nm-applet:4648): WARNING **: No connections defined

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CentOS 5 :: Server Is Very Slow From Ssh In LAN

Feb 11, 2010

in my office I've setup a centos server which uses no GUI only the console with apache & mysql for testing purpose, notice that I haven't setup any vhost or any mysql db yet, so the load is 0.00 The strange thing that suddenly one day I tried to login to this "server" from my windows pc (in the next room) via putty , and since that day the "server" is very very slow. What do i mean? when I try to login with SSH it makes 15 seconds or more to ask me about login, and then about password (like it happens in a server with massive load). then when I type the command in the konsole it always delays between letters.

I run top -c and everything is dead (0.00) so there is no load. even If I ping -t localip the machine , after 3-4 pings I get "Request timed out". so I think something is wrong with the local network. If I get connected physicaly in the "server" and start pinging my windows pc it works great, everything is going fast, the konsole is fast (as it should be) and if I ping any other servers it also goes withoute a problem. The I think its not a problem with the "servers" network connection.

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CentOS 5 Server :: Sendmail Is Very Slow For Php Mail()

Dec 23, 2009

I am using CentOS and sending mail through php mail function. It is taking too much time to send a mail.

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CentOS 5 Server :: Slow File Transactions On 5.5 Nas-box?

Jan 17, 2011

we got a dell nf600 network storage server which functions as headnode for our little computing-grid and network storage system
i did a normal install of centos 5.4, upgraded to 5.5 and so far there haven't been any problems with one exception:there are 2 harddisk configurations present on the box:

- a raid system where i store all the data with 4TB, mirrored
- a harddrive where the system files are stored

the network access happens via samba and nfs and is fast enough, but when i want to copy something from the raid to the single harddrive or vice-versa, or make some bigger file operations on the raid, the system slows down VERY much and is not responsive at all that there should be some extra-configuration for the filesystem/raid controller/... but i don't know where to start looking i would appreciate it very much if someone could help me further - and i will ofc provide all the configuration files you need for that (i just don't know which ones to post here in the first place)i'm not too lazy to read through some manuals, if you know a good one for setting up a fileserver in centos (with info how to tweak performance)

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Server :: Mysql Is Hogging Server Resources And Sometimes Crash?

Dec 6, 2010

my mysql is hogging my server resources andd sometimes crash it.Is there a way to increase memory it uses?I get this message alot..

Time: Mon Dec 6 08:21:33 2010 -0600
Account: mysql
Resource: Virtual Memory Size

[code]....

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CentOS 5 :: Duplicate / Multiple Processes - Server Really Slow

Mar 28, 2010

My server is really slow. When I did a top -c or ps aux, below shows up. Shouldn't there be only one? Shall I kill all those processes and leave only one?

3135 nobody 15 0 15900 5232 1860 S 0.0 0.1 0:00.17 /usr/local/apache/bin/httpd -k restart -DSSL
3173 nobody 16 0 15900 5244 1848 S 0.0 0.1 0:00.05 /usr/local/apache/bin/httpd -k restart -DSSL
3174 nobody 15 0 15900 5232 1860 S 0.0 0.1 0:00.15 /usr/local/apache/bin/httpd -k restart -DSSL
5153 nobody 15 0 15900 5228 1860 S 0.0 0.1 0:00.04 /usr/local/apache/bin/httpd -k restart -DSSL
7598 nobody 16 0 15900 5228 1872 S 0.0 0.1 0:00.20 /usr/local/apache/bin/httpd -k restart -DSSL .....

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CentOS 5 Server :: Apache Slow To Respond / Make It High?

Nov 16, 2010

I have CentOS 5.5 x86_64 with Apache, php and mysql.
I have just installed OTRS (helpdesk - trouble ticket system) on that server and no users.
This system works with perl, apache and mysql.
I notice that is slow to respond and at times unresponsive the apache welcome page. code...

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CentOS 5 Server :: RAID0 - Getting Extremely Slow Read / Write Speed

Jun 28, 2010

I am new to Centos and linux in general. I have just got myself a Dell 1950 server with 2x 1T SATA2 hard disks in it. now the server comes with a PERC5i Raid card with 512Mb. Well I put these in raid 0 and the raid card initilzed the disks to 128 writeback and read ahead. When I loaded centos it did not recognize the dell layout so therefore wanted to initalize it again, so I done this as it wanted. Now I created a 80gb boot and o/s partition and a 100gb swap the rest was created into LVM space to run solus vmwear. But I found the raid 0 to be getting extreamly slow read and write speeds.

Example same disks
Desktop PC max 214mb/s windows vista 64
Server with centos 104mb/s

Now I am not sure but I am told that I need to align the o/s with the raid card settings but I have no idea how to do this. How to do this in plain easy step by step instructions. I mean how to calculate it, how to format the disk this way, and what files to edit where if needed. I have spent hours trying to figure out why my raid 0 is slower than a single disk.

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Server :: Finding The Performance Tuning Resources?

Feb 23, 2011

I am currently reading [URL] its an old document from 2006, so i am not really sure how much information in it is still valid.

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Server :: Fedora - Samba - Cannot Share Cdrom Or Raid Resources?

May 30, 2010

I am trying to share a couple of resources from my fedora 12 box to a windows vista, using samba. It seems absolutely fine to share any folder but as soon as I am trying to share a folder which is used as a mount point windows cannot access this folder. I get the following message from windows:"the network cannot be found". This must be due to some permission, but I cannot find which one.

Note that windows can access the folder but as soon as the device is mounted I v#can see the folder in windows but cannot access it. Here is a copy of the smb.config file:

[global]
workgroup = workgroup
server string = GAIA
security = share
;guest account = nobody

[Code]...

Note that I have been trying to execute the same with mounting and sharing a raid1, but windows cannot see it.

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Server :: Resource Stickiness Automatically Move All Resources In Certain Time

Jun 8, 2011

I have configured heartbeat and pacemaker with 2 nodes, all resources work well, all resources stars when some of them is down, when the host is down, pacemaker moves all resources to the other one, my configuration:

[code]...

i have the directive " resource-stickiness="INFINITY", when node1 is down, the node2 starts all resources and prevent failback again though the node1 is up, back i need move all resources to the first one when I certainly sure the node1 is runnig, is there some directive to tell pacemaker that move back again the to node1 automatically? i mean, is posibble to move back resources to node1 when It has passed certain time, maybe 1 hour or something?

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Ubuntu Servers :: How Much Resources Are Needed To Run A Mail Server With Approximately 75 Boxes

Jan 10, 2011

How much resources are needed to run a mail server with approximately 75 boxes?

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Server :: LDAP Resources / Tips / Tricks For Small Vhost Setup

Apr 14, 2010

I have looked around a while for the answer, but nothing really fits. Here is the scenario. I have one server and a few openvz VE's running. I want to be able to auth whatever possible with LDAP. I have an LDAP server setup on the host and auth works for the server users. The tricky part for me is that every VE has their own domain. and if I can do that, they will also have the same login for their VE on said domain. I can setup users and the required software on the hosts and guest, but I guess I am confused at how to manage the multiple domain part of things.

not sure if proftp can do 'name based' stuff like apache, but if it can, we can point ftp.clientdomain.foo to the main server and handle it that way.

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CentOS 5 Server :: Super Slow Windows Printer Properties Dialogue With Samba Printer

Sep 18, 2009

I have a Centos 5.3 server with Samba file shares and a shared Samba printer. I am not running a domain.

I recently changed my windows desktop pc from an XP machine to a vista 64 machine... It has a different user name. Everything went pretty smoothly - and the and the vista machine found the smba printer - and even downloaded the driver from the samba server. he printer works OK - and the file shares are fine.

The only thing which is quite odd - is that the Printer Properties dialogue takes more than 30 seconds to come up - and every action you attempt with the dialogue takes a similar amount of time.

I will include below the essence of my smb.conf:

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CentOS 5 Networking :: Internet Access Slow In CentOS 5.3?

Sep 9, 2009

I have an MSI K9A2 Platinum mobo, which has a 10/100/1000 Fast Ethernet Realtek 8111B built-in, a D-Link DIR-655 Router and a DSL modem. Compared to Windows Visya and other Linux distros ( Fedora 11, Suse 11.1, Mandriva 2009.1 ) access to the internet is much slower. It seems there is a noticeable delay when running CentOS 5.3. before internet access kicks in each time I am surfing the web or updating my system.

Is there any way I can speed things up, or determine why CentOS 5.3 seems much slower ?

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Server :: Node Failover And Another Node Take Over Resources On HA Cluster?

Oct 27, 2010

I don't have much experience in clustering. And I'm deploying a cluster system on CentOS.But I don't know how long a node failover and another node take over those resouces to continue running service is good, fast or slow? 1s, 10s or

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CentOS 5 Server :: Httpd Running Very Slow "/var/lock/subsys/httpd': No Space Left On Device"?

Jun 10, 2011

Running CentOS 5 x64 And today my httpd is running very slow and I can't find a fix. Looked all over different forums

When starting httpd I get the message: /var/lock/subsys/httpd': No space left on device I checked that directory above and there is no file called httpd tried rebooting server

Can't do updates too:
[root@u15438957 ~]# yum update
Loaded plugins: fastestmirror, priorities
rpmdb: unable to join the environment

[Code]...

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Server :: Server Slow : Apache Mysql Fine Tuning Server For Faster And More Responsive?

Apr 21, 2011

I'm running a linux cloud server with the following config
1.2ghz Processor allocation
752MB Ram

The site loads slow and clicking a link almost freezes the page for a second. Also, the page loads could be much faster. We've been running mysqltuner and have pretty much optimized all slow queries. Is there anything we can do to fine tune the server for faster and more responsive?

Httpd.conf

Timeout 20
KeepAlive Off
MaxKeepAliveRequests 100
KeepAliveTimeout 5
<IfModule prefork.c>
code....

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General :: Centos Is Got Slow

Mar 1, 2011

My box is centos 5.5 x86, and it is got slow nowadays. The "top" is as attached.

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CentOS 5 :: SSH Login Is Slow

Jun 10, 2009

When I login to ssh enter username then it takes quite a bit of time before password prompt comes up.

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Server :: WordPress Blogging Server Running Slow For What Reason?

May 16, 2009

I have a wordpress blogging server up and running and i've also got nagios monitoring the speed of webpage download etc.The thing is a couple of weeks ago nagios alerted me that the blog was returning pages really slow loading, when i went to the blog homepage for me also it was very slow. After about 30mins of http connections some finally loading and some not nagios stopped reporting issues, but thats not the end of the story, the graphing of speed i've got set-up on nagios shows quite clearly that ever since that big slow down the pages take avg of extra 2-3 seconds to load. However nothing drastic has changed and the datasize of the page hasn't really changed at all (also monitored).

During that weird period I carried out checks on the server itself like top, free -m, netstat (looking for maybe DOS attack number of connections), looked at mysql see if that was running slow and what processes it was running, checked on number of http processes see if they had ramped up, checked on php and web server errors see if they had increased some what as well. None of these things turned up anything noticeable to be causing such slow blog response.Now its still that average amount high and i'm lost at why this could be? Its niggling at me that something may have got in but i've taken several security steps to try and lock down the wordpress install etc.

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Server :: Oracle 10g On CentOS5 And HP Proliant Server Is Slow?

Oct 25, 2010

there is any other way to make oracledb on CentOS 5.4 and HP Proliant DL360 G5 Server fast access from a vb application. modified, reconfigured all to make faster but no use

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Server :: Qmail Server On Redhalt 9 - SMTP Very Slow?

Apr 1, 2010

we have qmail server installed on rhl 9. it was working perfectly fine for last 1 year. suddenly it stopped accepting emails from internet. when i telnet on port 25 it takes about 90 secs to show the SMTP ready state.I have tried many things

1. stopped Reverse DNS Lookup by adding -H to qmail-smtpd/run file
2. stopped spamassing and AV
3. reverified DNS server settings in resolv.conf
4. dig is resolving dns query properly.

i also observed that when i do telnet to
telnet localhost 25 response is very quick

but when i do
telnet local_server_IP_address 25
it takes aprx 90 secs to show me SMTP ready messege.

can someone shed some light on this as what should i do next to rectify this problem..

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Server :: Slow Database Server On Processing / Make It Up?

Apr 15, 2010

I'm having trouble with my database server run with PHP & MYSQL; i just installed this system on a SUSE Linux Enterprise Sever; the Server its self is an HP Proliant ML370G with 4GB RAM
The system was fine for like 3 weeks until recently when it started slowing down. Apparently, eveything is normal when you are accessing the server, for example when you are browsing on the database web interface; but problem is when you start working in the database, when you try submitting into the database, its really slow on processing, i have to first restart the mysql;
Could it be RAM? or the SQL itself?

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Red Hat :: Graphics Very Slow With CentOS 5 On Dell Laptop

Apr 28, 2010

I am using CentOS 5, I have recently installed it on my Dell LATITUDE laptop but the resolution was 800x600. I've tried to put it on 1680x1050 and it worked out well I guess but the graphics had become very slow. For example I have to wait 5 to 6 seconds to scroll from page to page in a pdf file. Minimizing a window takes also a lot of time. I have a NVIDIA card in my PC.

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CentOS 5 :: SSH Is Working Extremely Slow, But Only Off-network?

Mar 4, 2009

SSH access works fine from a LAN computer, but anything over the internet is extremely slow or times out. We're talking a good 1-2 minutes just to get the login prompt!This is a new installation, I switched from Fedora to CentOS. Previously, SSH from off-network worked perfectly fine with Fedora.What could it be? All other network services on this machine are working properly and at normal speeds, it's just SSH that is not willing to cooperate.

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CentOS 5 Networking :: Slow Data Transfers W/ Smb, Scp?

Apr 14, 2009

I am having a problem with slow data transfers with both Samba and scp. I have gigabit NIC's on both all three machines that I am transferring to and from, connected to a gigabit switch. My data transfers under both smb and scp average around 21 MBit/s, (I am using nload to monitor transfer speeds).The machines are configured as follows,1) desktop

AMD Athlon 64 X2 6000+
6 gig Corsair memory
Realtek RTL8168C(P) gigabit NIC (on board)

[code]....

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