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CLEAR
Topics
On this page
-
- Getting Started
- Git and File-System Layout (non-default setup)
- Version Constraints
- Managing Themes and Plugins (for entire WordPress site)
- Updating Themes and Plugins (for entire WordPress site)
- Adding Composer Support to Your Own Themes and Plugins (for developers)
- Using Composer to Manage Own Theme/Plugin Dependencies (for developers)
-
- Assigning Multiple IP Addresses to Single LAN Card
- Disable IPv6 on Ubuntu 12.04
- dsh – distributed shell
- fdupes – find & replace duplicate files with hardlinks
- GPG Keys Cheatsheet
- Increase "Open Files Limit"
- kill all php, nginx, mysql or any kind of processes
- Passwordless Authentication for SSH
- Screen
- search replace in multiple files useing grep xargs sed
- Setup sftp
- sysctl.conf
- Timezone Sync
- Using Google Public DNS on Ubuntu Server
- Using openssl to match private key, cerificate and CSR
- Configure Postfix to Use Gmail SMTP on Ubuntu
- Logrotate Example for Custom Logs
- PHP 5.5, MySQL, Postfix, Nginx and WordPress on Ubuntu
- Serverdensity
- Upgrade Ubuntu 10.04 to 12.04
- Using find and sed to replace strings in multiple files
- Webmin
-
- .my.cnf – mysql user & password
- Analyse slow-query-log using Anemometer
- Improving MySQL Query Cache
- MySQL Query Profiling
- Reset MySQL root password
- tuning-primer.sh – an alternative for mysqltuner
- Using MariaDB 10
- Install/Upgrade to MySQL 5.6 on Ubuntu 12.04 LTS
- Change WordPress Domain Name
- Character Sets and Collations
- Enable innodb_file_per_table
- Enable Remote Access (Grant)
- Installing Percona Toolkit
- Using tmpfs for temporary folder creation
- YARPP and InnoDB
- Convert MyISAM to InnoDB
- Using tmpfs for mysqldump & mysqlimport
- Convert from INNODB to MYISAM
- Analyse slow-query-log using mysqldumpslow & pt-query-digest
- mysqlcheck with cron to optimize automatically
- Using MySQLTuner to Optimize MySQL configuration
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- Directly connect to PHP-FPM
- Generating core-dump for php5-fpm
- GeoIP
- Having php5 and php7 on same system.
- Install Xdebug and configure it with webgrind
- Installation of PHP Code Review Tools
- memcache
- PHP's Zend Opcache Config & Web Viewer
- Setting Sqlite support with PHP
- Using HHVM with PHP-FPM Fallback
- Using Redis for PHP Sessions on Ubuntu Server
- Installing PhpMyAdmin Quickly
- Moving PHP's session storage to tmpfs
- Install Xdebug and configure it with Netbeans
- Nginx – Enable PHP-FPM Status Page
- PHP-FPM: Socket vs TCP/IP and sysctl tweaking
- APC Cache Optimization & Monitoring Using Web Interface
- Checking if PHP/WordPress can send mails
- Debugging PHP Scripts Using slow_log and more
- Increase file upload size limit in PHP-Nginx
- Increase PHP script execution time with Nginx
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- Performance Optimization
- Remove Query string of css/js files
- Setup ElasticSearch with ElasticPress
- Using Redis for WordPress Object-Cache
- WooCommerce Window Shopping Caching Technique
- Moving WordPress To New Server (Faster)
- Better wp-cron using linux's crontab
- 404 error- Page not Found!!!
- Debugging WordPress with Nginx
Installation
Verify Build
Run
Output
Interpretation
Resources:
httperf
Installation
apt-get install httperf
Ubuntu builtin package results in following warning:
httperf: warning: open file limit > FD_SETSIZE; limiting max. # of open files to FD_SETSIZE
We patched httpref source code on our end to fix that warning. Run following commands to install httperf:
wget https://github.com/rtCamp/httperf/archive/master.zip
unzip master.zip
cd httperf-master
autoreconf -i
mkdir build
cd build
../configure
make
make install
Verify Build
Run following command:
httperf -v | grep open
It will show something like:
httperf: maximum number of open descriptors = 500000
Where 500000 is open file limit. It should be high enough. You can increase if by following this guide.
Run
httperf --server example.com --port 80 --num-conns 1000 --rate 1000
You can add --hog parameter as well. This will try to use as many TCP connection as possible from host machine.
Output
Below is sample output
httperf --client=0/1 --server=rtcamp.com --port=80 --uri=/ --rate=1000 --send-buffer=4096 --recv-buffer=16384 --num-conns=1000 --num-calls=1
Maximum connect burst length: 3
Total: connections 1000 requests 1000 replies 1000 test-duration 1.337 s
Connection rate: 747.9 conn/s (1.3 ms/conn, <=203 concurrent connections)
Connection time [ms]: min 5.9 avg 115.8 max 438.5 median 97.5 stddev 81.3
Connection time [ms]: connect 0.8
Connection length [replies/conn]: 1.000
Request rate: 747.9 req/s (1.3 ms/req)
Request size [B]: 68.0
Reply rate [replies/s]: min 0.0 avg 0.0 max 0.0 stddev 0.0 (0 samples)
Reply time [ms]: response 105.0 transfer 10.1
Reply size [B]: header 498.0 content 107982.0 footer 2.0 (total 108482.0)
Reply status: 1xx=0 2xx=1000 3xx=0 4xx=0 5xx=0
CPU time [s]: user 0.05 system 1.26 (user 3.9% system 94.2% total 98.1%)
Net I/O: 79282.9 KB/s (649.5*10^6 bps)
Errors: total 0 client-timo 0 socket-timo 0 connrefused 0 connreset 0
Errors: fd-unavail 0 addrunavail 0 ftab-full 0 other 0
Interpretation
Most important is “Reply status” line:
Reply status: 1xx=0 2xx=1000 3xx=0 4xx=0 5xx=0
As you can see we received 2xx i.e. OK status for all requests.
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