Server :: Finding The Performance Tuning Resources?
Feb 23, 2011I 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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General :: Change SHMMAX Variable For Performance Tuning?
Feb 2, 2011I am using Ubuntu-10.4 and postgresql-8.4.Now I have to change my SHMMAX variable for performance tuning.I have 16 GB.change it permanently and what is the suitable value for the DATABASE Server.
View 1 Replies View RelatedServer :: Server Slow : Apache Mysql Fine Tuning Server For Faster And More Responsive?
Apr 21, 2011I'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....
Server :: How To Do Squid Proxy Tuning
Jan 20, 2011we having more than 5000 users and will have 7 squid proxy servers with high end configuration upto 4gb ram n 320*5 HD in rhel4&5 most of them complaining that at peak hours their browsing speed is slow but we are having 1gbpgs link at peak hours i.e when established connections r flowing more than 550 browsing gets slow how to do fine tuning are squid is only responsible to access upto 600 connections
View 2 Replies View RelatedSoftware :: Finding A Network Performance/stress Test Program?
May 14, 2010I'm looking for a Linux program that will do some simple network performance/stress testing.
View 3 Replies View RelatedServer :: Apache Maxclient / Serverlimit Perf Tuning?
Mar 25, 2010I've been trying to set-up/tweek these param's in Apache to a setting suitable to the server for the amount of memory. When i look around some people say, hey.. just look at the memory used per process and then divide that by the amount of memory available and you get the number of processes that can be handled by Apache in one go before it starts swapping.
Well, for this i'd done this calculation and for me it turned out to be 200 approx concurrent connections. Well funny thing is, out MySQL server had a slow down so the Apache servers were running at approx 450 concurrent connections and weren't swapping in memory etc (still had 600MB free not including what was available in Buffers/Cache - 'free -m')... Thus if i had have set the limits to 200 then people would have been not getting to the site, so i'm kind of pleased that i happened to not have the time to set this yet.
Server :: Tuning Apache To Handle PHP With NginX On The Frontend
Jun 24, 2010My intention is to have EngineX on the frontend handling all static files, and Apache + mod_php in charge of handling PHP requests. I have optimized nginx to be as efficient as possible in handling static files, but have very little experience with Apache. Since Apache would only be processing PHP requests, would the standard Apache optimization guides suffice or would it best to configure it differently?
PS: this is a dedicated file server, the database is hosted separately.
Networking :: Tuning For High Throughput Reverse-proxy Server?
Jan 18, 2011I have an enormous quadcore machine with 16gb ram and dual gigabit NICs. It used to be for MySQL but we have upgraded the whole database infrastructure so now this server is left floating. I had the great idea of turning this into a reverse-proxy (using apache mod_proxy) and it really handles a ton of requests. But I have a feeling that we are not getting the most use out of what it can offer.
Our traffic consists of a few thousand very small (less than 10 byte) ajax calls per second, and frequently I find we are running out of kernel allocated network stack to handle all the requests. Often we get the kern.log warning "possible SYN flooding on port 80. Sending cookies." and other things like this. Obviously we are not getting SYN flooded, we just have very high demand.
So far I have found a few kernel tuning guides to tell the kernel to allocate more of the base system memory for networking but every guide I have found has been for the purpose of increasing the performance between WAN links (direct backbones between offices etc) and usually with very large file sizes being the priority. One such example (and great) write up is here:
cyberciti.biz/faq/linux-tcp-tuning/
I was hoping some people could provide further input, such as along the lines of disabling nf_conntrack (to speed up socket set up/tear down time) or anything that will speed up a high throughput proxy like mine. Any links to studies or benchmarks between different configurations or hardware gets extra points!
Server :: Tuning With Sysctl.conf - Memory And CPU Settings For Heavy Loaded Systems
Jun 28, 2011Does anybody have experience with linux tuning. I`m realy interesting about sysctl.conf tuning settings for batch(3d rendering, phisycs simulations, etc.) servers. Does anybody has an experience with linux tuning - I mean memory and CPU settings for heavy loaded systems. What kind of settings You have in Your clusters ? I`m working with Red Hat Enterprise 5 x86_64.
View 2 Replies View RelatedServer :: Mysql Is Hogging Server Resources And Sometimes Crash?
Dec 6, 2010my 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]....
CentOS 5 :: Server Resources Are Slow?
Mar 1, 2011I 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.
View 6 Replies View RelatedServer :: Fedora - Samba - Cannot Share Cdrom Or Raid Resources?
May 30, 2010I 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.
Server :: Resource Stickiness Automatically Move All Resources In Certain Time
Jun 8, 2011I 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?
CentOS 5 Networking :: Can Ping Server Network But Cannot Share Resources
Feb 15, 2010I 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]...
Ubuntu Servers :: How Much Resources Are Needed To Run A Mail Server With Approximately 75 Boxes
Jan 10, 2011How much resources are needed to run a mail server with approximately 75 boxes?
View 2 Replies View RelatedServer :: LDAP Resources / Tips / Tricks For Small Vhost Setup
Apr 14, 2010I 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.
Server :: Performance Tunning Of Apache-tomcat And Jboss Application Server?
Jul 2, 2010Can anyone tell me in performance tunning of apache-tomcat and jboss application server?when I deploy some application in apache-tomcat the performance is say 100 users per second and incase of jboss it is even worst (35-40 users per second)i want to improve my performance 1000 uesrs per second..
View 1 Replies View RelatedCentOS 5 Server :: NFS Performance With Files Not Yet Cached By The Server File System?
Feb 25, 2009I have a weird performance issue with a centos 5 running a nfs server and a rh8 client. I think the fact that it is rh8 client should be downplayed. It is just that with rh8 client the performance degradation seems more clear. See test details below OS in server is Centos 5 x86_64 kernel 2.6.18-92.1.22.el5
1Gb connection between machines File to test over NFS is a 1GB file. First of all I wanted to measure how the network alone performs while using NFS. So in the server side I run a "cat" command on the 1GB file to /dev/null. Please note that the disk read speed is about 98MBs. At this point the file system has the 1GB file cached in memory. In the client side a "cat" on the same file gives me a speed of about 113MBs. It seems then that the bottleneck in this instance is the network and it is very close to nominal speed. So the network performance is really good. (BTW I know that the server got that file from cache because a vmstat or iostat shows no disk activity.)
The second test is reading from disk with no caching involve. In the server I flushed the 1GB file from the memory. For instance by reading another 5GB file and I repeat the same thing as above in the client (a cat on the 1GB file). Now, the server has to go to disk.(vmstat or iostat shows the disk activity). However the performance, now, is about 20MBs, I was expecting something closer so 90MBs. (since the reading speed in the server in the first test showed 98MBs).
This second test was repeated for ext2, ext3, xfs with no significant differences. A similar test using a RH8 NFS server and client gets me close to 60MBs for a 1GB file not cache by the file system in the serverSince network speeds and disk read speeds are not the bottlenecks ... what or where is the limiting factor then?
Server :: Gnome Desktop Harming Server Performance?
Feb 4, 2010On my local apache web server I had installed gnome desktop, because I wanted it to use as a TV. But when I installed the gnome desktop, my requests for web pages became terribly slow (4-5 seconds!). When I deinstalled the gnome desktop, the request where fast again. But I still want to watch TV on my server, so I wander if people know why the gnome desktop harms the performance of the server?
PS. with gnome desktop, ping was <1 ms, samba server worked like charm, wget localhost was <1 ms, but for some reason, when tried to get a webpage from my webserver to a remote machine, it took seriously 4-5 seconds to load a page.
Ubuntu :: Ondemand Vs Performance - Increases The Clock Speed To Performance When The CPU Is Under Load
Jul 31, 2010I just wanted to know if having my laptop set to ondemand, will this affect performance in any way? I realize it increases the clock speed to performance when the CPU is under load, but does the time it take to go from ondemand to performance affect speed? Will there be any noticeable difference between the two setups? I have a dual core intel at 2.2GHz when in performance. When ondemand is set with no load it downclocks to 800Mhz.
View 7 Replies View RelatedServer :: Performance Of Apache Server On Centos5 ?
Oct 2, 2010I am hosting apache service on the CentOS5.4. I configure the Apache in default setting mostly. But keep getting complaints from others about the website download too slow, pdf cannot download at all, flash cannot play smoothly, etc.. But on my own machine, everything works fine. Is there any tool for analyzing this problem?
View 5 Replies View RelatedServer :: Node Failover And Another Node Take Over Resources On HA Cluster?
Oct 27, 2010I 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
View 2 Replies View RelatedServer :: Disk Encryption Vs Performance?
Jan 29, 2010how much of a performance impact full disk encryption (say, AES 256-bit) has on disk-related activities? On one particular project I'm involved in I am trying to weigh out security vs performance issues.
View 1 Replies View RelatedServer :: How To Optimize Samba Performance
Jan 4, 2011I have installed a linux server, centos gui server with Raid1, his role will be only a file server. I installed samba and configured it. The file system is EXT3. the server got 4 gigs of memory.There is a program in windows that writes files to the share.I searched and i found that there is some commands that you add and they boost the performance.
I got complains that the writes are not fast enough. Before me another IT guy configured the file server and it was faster, what he told my customer that he changed some command of cache but i dont know exactly what he did. I have been asked to find how to boost the performance.Please give me more commands to try to boost the performance of Samba or tell me if i need to change anything..
Slackware :: SSD - Trying To Boost Server Performance?
Jun 22, 2010Just want to know if solid state drive supported by slackware 13.1? Coz I want it to try to boost my server performance???
View 5 Replies View RelatedUbuntu :: Looking For Official IO Tuning Guide?
Jul 16, 2010We need an official IO tuning guide for ubuntu similar to the one given here [URL].
View 4 Replies View RelatedServer :: Improving Squid Proxy Performance?
Feb 4, 2010I am starting to get bottlenecks in the loading of webpages via squid. It is not the actual playback of video that has performance issues, this is very good. However, when a webpage is first requested, it is the initial response that takes more than a few seconds to load the page. I am wondering how to troubleshoot the issue as I don't know whether it is squid, the dns lookup, the number of users, RAM, or the bandwidth. Bandwidth seems to be the least likely since the server has a high bandwidth and video streaming appears to have no problems. I do not have caching turned on yet, which would certainly help because I do not want to cache flb, mp3, etc. files and the last time I turned on caching the performance was actually worse. The slow loading of pages has only just beguin to creep into the performance, it wasn't an issue before.
View 5 Replies View RelatedServer :: VirtualBox - RAID5 - Iscsitarget - And Performance ?
Jun 8, 2010I broke down and spent some $$ on a new server for home use. I mostly do technical research and testing, plus store movies and music. My interests are mainly in the IET iscsitarget performance.
Server system consists of an AMD Phenom II 550, 8GB RAM, 1x 80GB system partition, and a LVM-vg0 software raid5, running Ubuntu 10.04 server x64.
The vg0 consists of 3 x 500GB 7200RPM SATA drives (mdadm) sliced up with 100GB for VBox VMs, one slice is an iscsitarget for a Windows 2k3 server, and another slice iscsitarget for a desktop.
With this setup, the win2k3 server is booted from a .vdi image stored on the ext4 lvm raid5 vg0. Here are the DiskTT stats.
Code:
However, with the Win2k3 server and the MS iscsi initiator I get using DiskTT:
Code:
The speeds are incredibly slow considering a non iscsi connection is screaming fast in comparison. Any ideas?
All nics are 1GB.
Here is my ietd.conf
Code:
Server :: Poor Performance While Installing Enterprise 5.0
Mar 1, 2010I am installing Red Hat Linux enterprise 5.0 on HP proliant ML 110 G5 with X3330, 8 Gb 2 X 250gb SATA Config. Time required for full istallation is around 2hours 30 minutes. What could be the reason?
View 3 Replies View RelatedServer :: Software Raid 5 Write Performance
Nov 16, 2010I wasn't sure where to post this question so administrators, feel free to move it.I have a media server I set up running Ubuntu 10.4 Server, and I set up a software raid 5 using 5 Western Digital Caviar Green 2TB 7200RPM 64MB drives. Individually they benchmark (using the Ubuntu's mdadm GUI (pali?somthing...) at about 100-120mb/s read write.I set the raid 5 up with a stripe size of 256kb, and then I waited the 20 hours it took to synchronize. My read speeds in raid are up to 480mb/s, but my write max is just under 60mb/s. I knew my write performance would be quite a bit lower than my read, but I was also expecting at least single drive performance. I have seen other people online with better results in software, but have been unable to achieve the results they have gotten.
My bonnie++ results are more or less identical (I used mkfs.ext4 and set the stride and stripe-width).The PC has 2048mb of RAM and a 2.93Ghz Dual Core Pentium (Core 2 Architecture), so I doubt think that's the bottle neck. These drives are on the P55 (P45*) South Bridge SATA controller.