We can improve apache web server performance tuning using optimization parameters in Linux. Configure MPM Prefork. One of the poor performance of the Apache webserver is having trouble in load the web page and then the MPM module can help you to enhance performance.

This sets if the server allows more than one request per connection. By default, this is disabled. This tells us the maximum number of requests to the server on a TCP connection.

The recommended value of MaxKeepAliveRequest is KeepAliveTime Out. This is a parameter that defines the number of seconds before closing a connection that means the maximum number of seconds Apache will wait to new request before closing the connection. DNS lookups. Sign in Join.

5 Tips to Boost the Performance of Your Apache Web Server

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Notify of. Aryan Sharma - May 30, 0.According to a recent report by Netcraft a well-known Internet company that provides among other services web browser usage statisticsApache continues to be the most widely used web server among sites and Internet-facing computers.

Additionally, Apache keeps experiencing the largest growth among the top web servers, followed by Nginx and IIS. In this article we will discuss a few tips that will help you ensure that Apache will run smoothly and be able to handle the number of requests you are expecting from remote clients.

However, please keep in mind that Apache was not designed with the objective of setting benchmark records — but, even so, it is still capable of providing high performance in almost any usage case you can possibly think of.

It goes without saying that having the latest version of Apache installed is probably one of the first things you need to consider. However, there may be a recent improvement or a bug fix that has been added to a newly-released stable version, which is then made available to download and install from source.

centos 7 slow performance

As a rule of thumb, stick with the update method provided by the package manager of your chosen distribution yum update httpd or aptitude safe-upgrade apache2for CentOS or Debian, respectively unless there is no other way. Kernel versions 2. That, in turn, facilitates high performance network file transfers which are desired in the context of web server-client communications and enables Apache to deliver static content faster and with lower CPU utilization by performing simultaneous read and send operations.

Although it is a process not intended for beginners, upgrading your kernel is an interesting exercise to learn more about the internals of Linux. In practice, MPMs extend the modular functionality of Apache by allowing you to decide how to configure the web server to bind to network ports on the machine, accept requests from clients, and use children processes and threads, alternatively to handle such requests.

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Beginning with version 2. Note : To make the event MPM work in Debian, you may have to install the libapache2-mod-fastcgi package from the non-free repositories. Last, but not least, restart the web server and the newly installed php-fpm or php5-fpm service:. Although you can set Apache to use a specific MPM, that configuration can be overridden on a per-virtual host basis in the same fashion as indicated earlier.

Finally, please note that regardless of your chosen distribution, php-fpm relies on the implementation of FastCGIwhich is the reason why I recommended the additional package installations earlier. For more details and examples on php-fpm and how it can along with the event MPM increase the performance of Apache, you should refer to the official documentation. This is what I see after changing the default MPM from prefork to event in the same box shown in the previous image:.

In CentOS 7you will need to make sure that the http and https services are enabled through the firewall, and that the network interface s are properly added to the default zone. As a basic test I am sure you can think of more complicated or stressful onesI will create a php file that checkes the existence of another file named test.To maximize the end-to-end performance of services, applications and databases on a server, system administrators usually carry out custom performance tunning, using various tools, both generic operating system tools as well as third-party tools.

Tuned is a powerful daemon for dynamically auto-tuning Linux server performance based on information it gathers from monitoring use of system components, to squeeze maximum performance out of a server. It does this by tuning system settings dynamically on the fly depending on system activity, using tuning profiles.

Tuning profiles include sysctl configs, disk-elevators configs, transparent hugepages, power management options and your custom scripts. By default tuned will not dynamically adjust system settings, but you can modify how the tuned daemon operates and allow it to dynamically alter settings based on system usage. You can use the tuned-adm command-line tool to manage the daemon once it is running.

Now you can control tuned using the tunde-adm tool. There are a number of predefined tuning profiles already included for some common use cases. You can check the current active profile with following command. From the output of the above command, the test system which is a Linode VPS is optimized for running as a virtual guest. To switch to any of the available profiles for example throughput-performance — a tuning which results into excellent performance across a variety of common server workloads.

You can also create new profiles, we will create a new profile called test-performance which will use settings from an existing profile called latency-performance. Switch into the path which stores sub-directories for all tuning profiles, create a new sub-directory called test-performance for your custom tuning profile there.

If you run the tuned-adm list command again, the new tuning profile should exist in the list of available profiles. For more information and further tinkering options, see the tuned and tuned-adm man pages. Tuned is a daemon that monitors usage of system components and dynamically auto-tunes a Linux server for maximum performance. If you have any questions or thoughts to share, use the feedback form below to reach us. TecMint is the fastest growing and most trusted community site for any kind of Linux Articles, Guides and Books on the web.

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We are thankful for your never ending support. Tags: CentOS Tips linux server monitoring. View all Posts.Tuned is a daemon that can monitors and collects data on the system load and activity, by default tuned won't dynamically change settings, however you can modify how the tuned daemon behaves and allow it to dynamically adjust settings on the fly based on activity.

I prefer to leave the dynamic monitoring disabled and just use tuned-adm to set the profile once and be done with it. By using the latency-performance profile, tuned can significantly improve performance on CentOS 6 and CentOS 7 servers.

You can install tuned on a CentOS 6. For CentOS 7tuned is installed and activated by default. To activate the latency-performance profile, you can use the "tuned-adm" command to set the profile.

Personally I've found that latency-performance is one of the best profile to use if you want high disk IO and low latency. Who doesn't want better performance? To check what tuned profile is currently in use you can use the "active" option which lists the active tuned profile. This means that each CPU in the system had more or less the same access to available memory. These connections were known as Parallel Buses.

Newer systems have many more CPUs and multiple cores per CPUso giving them all the same access to memory can be expensive in terms of space needed to draw all the physical connections.

A unit of execution is known as a thread. The issue with this is that the OS could decide to start a thread on a CPU that does not have the process's Memory in it's local bank, which means that there is latency involved, which ca n reduce performance. An interrupt known as IRQ can impact an applications performance. The OS handles these events, and are used by peripherals to signal the arrival of data or the completion of an operation. IRQs don't effect the applications functionality, however they can cause performance issues.

The local bank includes the RAM, along with a built in memory manager. This is not optimal because there are two times as many steps involved to access this RAM. Having to make additional hops causes latency, which is bad. You can see that there are extra steps involved, which can really add up over time and slow down performance.

This utility can be used to retrieve and set CPU affinity of a running process. You can also use this utility to launch a process on specific CPUs. However, this command will not ensure that local memory is used by whatever CPU is set.

CPU affinity is represented as a bitmask. The lowest order bits represent the first logical CPU, and the highest order bits would represent the last logical CPU. The Linux scheduler has a few different policies that it uses to determine where, and for how long a thread will run. Realtime threads are scheduled first, and normal threads are scheduled to run after realtime threads.

This policy defines a fixed priority for each thread 1 - The scheduler scans the list of these threads and run t he highest priority threads first. The threads then run until they are blocked, exit or another thread comes along tha t has a higher priority to run.Apache is one of the most popular and powerful web servers. And of course, it is open source. It is also known as httpd server.

Apache web servers are designed to provide a balance of portability, flexibility, and high performance. Optimizing Apache plays a crucial role in determining the overall performance of the system. Apache is easy to configure and provides simple performance tuning options, which we will discuss in detail today.

The installation will take some time. After the installation, you will be able to see a message on the console as shown below. The main configuration file httpd. The httpd.

You can also add your own parameters based on your requirements. KeepAliveTimeout is a parameter that defines the number of seconds before closing a connection. This is the maximum seconds Apache will wait for a new request before closing the connection. This parameter can be set to a very low value, between 1 and 5.

To make this change you can edit the httpd. This will allow you to limit the number of allowed connections and will help in effective utilization of network bandwidth, without causing traffic congestion.

This is a numeric value which when set to 0, will allow unlimited requests. The recommended value here is To add this parameter you will have to edit the httpd. KeepAlive is a parameter which determines whether more than one request per connection is allowed or not.

By default, this parameter is disabled in CentOS 7. If you expect Apache to be getting multiple requests from different IPs at once, then this should be turned ON.

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This can be edited in the httpd. In order to turn on this parameter, you can add the following line- KeepAlive On. One of the reasons for slow performance in Apache can be its inability to deal with load. In such cases, a multi-processing module will help.

centos 7 slow performance

For better performance, you can also use Apache MPM prefork module. This can be set in the httpd. However, if this is included within a simple directory tag then it will open an.The main factors include:. In this article, we illustrate how to tune and optimize performance of MySQL 8. Tuning Primer is a shell script that obtains information from MySQL server internals and makes recommendations on adjustments of the server variables. You can comment out the default variable values and increase the variable values to twice the default value.

Actually, it may take a few days to come up with the best values for your server. Special Note: If it fails to restart, go back and comment out the new values and start adjusting one by one and see which variable adjustment causes the server failure. If server successfully reloads, rerun mysqltuner and see if there are any more recommendations concerning the variable values adjustment. Adjust the file's variable according to the recommendations. You can comment out the default variable values and adjust the variable values as suggested in the recommendations.

If server successfully restarts, rerun tuneprimer and see if there are any more recommendations concerning the variable values adjustment. It is very important to note that the tuning tools mysqltuner or tuning-primer are not the solutions to poorly performing MySQL server, but rather scripts to guide you to fine tune the MySQL server.

It is highly recommended to regularly run mysqltuner or tuning-primer tool over 48 hr span after restarting MySQL server, so as to obtain meaningful usage statistic. It was interpreted as a "" or a 0, but maybe it was a mistake. To suppress this warning assign a defined value to your variables. To help you figure out what was undefined, perl will try to tell you the name of the variable if any that was undefined.

How to Speed Up Windows 7

In some cases it cannot do this, so it also tells you what operation you used the undefined value in. Note, however, that perl optimizes your program anid the operation displayed in the warning may not necessarily appear literally in your program. Create a backup of the mysql configuration file and edit the actual configuration file. After making the changes, restart mysql server. Do similar process for tuning primer. You have 0 out of 25 that take longer than Conclusion It is very important to note that the tuning tools mysqltuner or tuning-primer are not the solutions to poorly performing MySQL server, but rather scripts to guide you to fine tune the MySQL server.

Consider upgrading hardware of the physical server for better performance and optimize MySQL configurations based on the hardware specifications. Check out these top 3 MySQL hosting services:. Reliability 9. Pricing 9.Why upgrade CentOS from the stock 3. Performanceespecially if you use KVM. This performance boost comes from the newish blk-mq update to the Linux block device subsystem.

To upgrade CentOS from Kernel 3.

centos 7 slow performance

Get the key and install the repo so we can has the access to latest centos kernels. You should make sure there isn't a newer version of elrepo before you copypasta these commands. That should help to ensure you always get the latest kernel for CentOS 7. Keep in mind that removing the stock kernel will set you adrift from the rest of the boring and slow CentOS world, which is ok with me, but it might not be ok with your boss so I'm just giving you a fair warning.

I don't really suggest doing this on a production server, at least until you have finalized everything and are happy with the results. You already knew that though, right? Update Yum so that CentOS 7 pulls the newer 3. Install the new 3. Verify the latest kernel is available by running the following command which will parse grub2. If the CentOS kernel version 3.

You might want to leave some of the older 3. Reboot the server and cross your fingers! If all goes well the server should come back online and boot CentOS 7 with the 3.

I found that the 3. The Linux 4. Update Yum so that CentOS 7 pulls the newer 4. Install the new 4. If the CentOS kernel version 4. If all goes well the server should come back online and boot CentOS 7 with the 4. Tuned should already be installed for Cent 7, and the default profile is balanced. Depending on what you are doing, you may see better performance by changing the profile to "latency-performance".


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