Apache :: Reducing TTFB (Linux LAMP Server)
Mar 1, 2015
I've just switched my Apache and PHP config over to linux(ubuntu 14.10).
Apache 2.4.12 is using the mpm-event worker and PHP 5.6 is running in FastCGI/fpm mode.
I'm running MariaDB 10.0.17
I'd like to reduce the time to first byte even more, its currently 80 ms for static files and 110ms for PHP generated pages.
1. 80 ms seems like a lot, since the ping to the server is <15ms
How can I reduce this? Are there some tweaks for the Linux networking stack or Apache that I can apply?
I'm also using SSL, I remember it could be tweaked to improve its performance but I don't remember how..
I currently enabled the following in my main apache config:
Code:
ServerSignature Off
ServerTokens Prod
TraceEnable off
EnableMMAP on
EnableSendfile on
UseCanonicalName On
2. Is there a mod_spdy for Apache 2.4? what about http 2.0?
3. Can I tell PHP to make use of unix sockets to connect to the database server? (I heard unix sockets is faster)
4. I've installed memcached for PHP, can I also use this for Apache?
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Feb 21, 2015
I am just trying to understand what I am doing wrong when I try to set up a second server with LAMP. I already have a working server with LAMP but i didn't set that one up. Now I am trying to add additional machine and I am trying to figure out what else do i have to do so the machine will work as virtual server for my webpage(s).
Like I said, on a new server i already installed Lamp, forwarded ports 80, 22, 442 ....to correct LAN IP, and added an entry under apache2 sites-available like this:
"<VirtualHost *:80>
ServerName test.com
ServerAlias www.test.com
ServerAdmin info@test.com
DocumentRoot /media/BigBoy/www/test
ErrorLog ${APACHE_LOG_DIR}/test_error.log
CustomLog ${APACHE_LOG_DIR}/test_access.log combined
</VirtualHost>"
Than i connected a new domain to my main IP but it automaticly connects to the old server that is already running in my home network. So the question is what do i have to do, for my new server to run the webpages i want to? Do i have to add a specific command on old server or something else i forgot?
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May 24, 2007
My load average seems a bit high considering how few processes are running:
[url]
Is there anything I can do to reduce the load generated by Apache?
You can see the Apache2 server status info here:
[url]
It's serving 20-25 requests per second, which are mostly these tiny requests to tracker.php which issues a database query and returns an image. The relevant httpd.conf settings:
Code:
Timeout 120
KeepAlive Off
MaxKeepAliveRequests 100
KeepAliveTimeout 15
<IfModule prefork.c>
StartServers 8
MinSpareServers 5
MaxSpareServers 20
ServerLimit 512
MaxClients 256
MaxRequestsPerChild 4000
</IfModule>
This is a dual Opteron 2212 server (4 cores total) with 4GB RAM.
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Jan 2, 2013
I'm going to use my apache server to host files(it works with a php script so we can't use FTP for now...) so I was wondering if I could limit this virtual host's bandwidth per second so the websites on the other virtual hosts still load properly. Any module for apache on windows which can do this?
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May 1, 2013
I'm trying to improve the performance of my website and noticed that https pages take really long to load:
[URL] ....
[URL] ....
It appears this problem is caused by using https, because when I open my site without https it loads pretty quickly.
[URL] ....
From what I can see it appears that the main problem is the time to first byte, so my question is how can I reduce this?
My virtualhost for SSL is set like this:
Quote:
<VirtualHost 46.249.47.12:443>
DocumentRoot "C:Program Files (x86)Apache Software FoundationApache24htdocssite 2"
ServerName www.elitegameservers.net
ServerAlias elitegameservers.net
ErrorLog "logs/xgclan.com-error.log"
[Code] ....
I have replaced the real paths with "PATH" for security reasons. How to reduce the time to first byte in general. I tried setting up memcache to accomplish this but I didn't notice any changes...
This is my mem cache config:
Quote:
<IfModule mod_mem_cache.c>
CacheEnable mem /
MCacheSize 10000000
MCacheMaxObjectCount 100000
MCacheMinObjectSize 1
MCacheMaxObjectSize 262144
</IfModule>
Update: Just ran the openssl speed command [URL] ....
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Feb 16, 2008
What are the best ways to reduce server power consumption?
I have a Dell Poweredge 860 (2.4ghz QC, 5GB RAM, 2 HDs) and it uses 0.46AMPs when running normally. The problem is at boot up it spikes for a few seconds here and there to about 0.6 and this is a real problem as I only have a 0.5AMP allowance.
Should I underclock it? Remove the CD Drive?
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Jul 18, 2013
We are getting infinite loops due to the user requesting the same page continuously , even if apache sends a 200. It is happening randomly once every two or three weeks for different users.This issue is not confined to one browser it is happening with firefox 21, firefox 5, ie 8, etc. It is not happening to the same user again.
It is a PHP based website with custom CMS.We are never able to replicate this issue.Is this something related to a plugin installed on a browser ?
PHP Version 5.3.8
Mysql
Apache 2.0
SUSE
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Jan 8, 2015
I have a LAMP server at home and in my website I added a php form using gmail smtp but Im not receiving any emails from the form. Do I need to add something to my server? Im using the free contact form from this website [URL]....
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Mar 21, 2008
We have a spare powerconnect server in work and i was looking to set it up as a web server for a company intranet - more to gain experience in configuring a web server than anything else.
I decided to go with Fedora 8 as i'd used fedora previously and followed the LAMP tutorial on HowToForge.
However i've come across a problem which i just can't seem to resolve (after pretty intensive searching). So, i guess this post is in 2 parts.
Firstly, the error i'm getting is with mysql only. The error message is:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
I understand this may be a generic error but i'm not sure what other information would be useful.
Secondly, as this is my first web server - have I made the correct choice in terms of linix release or would something like CentOS be more suitable? I'd like to get this right from the start now that i have the chance.
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Dec 8, 2008
under your experiences which is the configuration recommended for a LAMP server? safe mode, phpsuexec, php version...
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Nov 20, 2007
to set up a little server that will have LAMP installed on it. All it will do is host a small program that runs on PHP and mySQL and will only be used on an office network with about 50 employees.
How well would this server run if the hardware was rather modest (667Mhz, 128mb RAM, 10GB HDD)?
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May 21, 2009
Because of the security issues inherent in controlling DNS servers on other VPS/servers that run other processes, host websites and store mission-critical data and for other reasons related to control, we want to keep our DNS server separate from our other servers and our own desktops. Therefore, we're going to get a small VPS for this purpose.
We won't totally cheap out on this so we'll be getting a quality VPS from a good provider. But, we probably don't need more than 5 or 10G of HD space but we wonder how much RAM and bandwidth we need to run something like MyDNS with MyDNSConfig with a MySQL backend.
Also, what's the best Linux distro for this kind of thing? We use CentOS with facility but are not afraid to try a new one if it's a better choice for this purpose.
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Jan 23, 2008
For a LAMP server user, is there a general consensus that everyone should pretty much install and run ModSecurity? Is there ever a good reason not too?
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Jul 19, 2008
How to install and configure memcached in LAMP server through easyapache or any other method.(cpanel installed server)
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Jul 18, 2007
I currently dev locally on a cobalt RAQ (ollld!) and would like to upgrade this setup.
I'm looking for a simple way of getting a linux system setup for internal dev work with the basics... mysql, apache, php5, and some kind of version control - subversion / cvs.
Are there any linux liveCDs that I could use to make something like this quite easily?
For our production server we use plesk, so a control panel similar to that for setting up new dev domains would be useful. Open source of couse tho.
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Oct 12, 2009
I want to make a Audio and Video Streaming Server using LAMP. I am running Redhat and have latest version of PHP, MySQL and Apache.
what i need to make such a server? I dont want to buy anything all things should be OpenSource.
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Apr 6, 2009
I built a web hosting server, the following is its state
Cent os 5
AMP server loaded updated (installed it as a complete suite during installation so it was all set to go with php mysql modules loaded)
webmin
usermin virtualmin
created 2 named based hosts.
now when i load up wordpress in a site and try to run install.php
the following pops up
"Sorry, I can't write to the directory. You'll have to either change the permissions on your WordPress directory or create your wp-config.php manually."
I had this issue before and research said to redo the entire server (tried everything and was fed up had fedora then"
you can have a look at www.itgrunts.com just click create config file and the errror pops up.
The php and mysql db work great on simple scripts but i dont know why this happens.
i worked with assigning the users and apache user to the directory and everything, no joy.
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Feb 20, 2008
I have a HUGE blog with over 15,000 posts that constantly runs the mysql database like NONE other.
I am just wondering, is there a way to reduce load? I am top 100,000 in Alexa and I get over 2,000 uniques / day. What can I do about this?
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Jun 19, 2008
I am having some trouble with getting 'include' working. I have a new dedicated server running Apache 2.0.63 and PHP 5.2.6. Local includes on the same domain are running ok, but remote includes are throwing a problem. On the many sites we plan to host on this servber we use a central 'webmaster' page called as an include from a specific site (also on the same server).
I need to edit the PHP.ini and /or recompile the PHP with the appropriate modules to do one of the following...
1 (ideally) - allow includes from any site that is held on this dedicated server
2. allow includes from specified websites
3. simply allow remote includes
right settings to get one of these
options running and solve my problem?
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Apr 24, 2007
somebody know is possible on some way route traffic before come to web server (apache or lighttpd)?
I want to setup lighttpd on port 80 and apache on port 81 and I want visitors to go direct to apache or lighttpd without url:81 and that must work on this way if somebody visiting url1.domain.com that go to lighttpd on port 80 and if somebody visiting url2.domain.com that go to apache on port 81 and something must route it before lighttpd and apache (and get/post must work), is this possible on some way?
I know that lighttpd and apache can do it but I don`t need it on that way!
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Jul 26, 2007
one of my clients wanna run an ASP.NET script on his site but all of my servers runing Linux and Apache not Windows so it can't support ASP by default so i wanna know how to make it support ASP or what's the essential software to run it on my server to enable it support ASP.NET
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Jan 25, 2009
I'm making the switch from windows to linux for our company web server. We've been running IIS/MySQL/PHP for years and with the OS cost to upgrade the server switching to Linux seems an obvious choice. What frustrates me is that none of the Distros seem very quick to use the latest versions of the AMP components and compiliing from source seems an unnessary hassle. I've tried Ubuntu server so far which has Apache 2.2.9/Mysql 5.0.67/PHP 5.2.6 with no room to easily upgrade any of the components (our WIMP server uses the latest MySQL/PHP).
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Mar 15, 2008
information regarding any sites or books that discuss in detail the installation and troubleshooting of Apache,Mysql, PHP....and also DNS.
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Apr 1, 2008
I am trying to install LAMP on Ubuntu 7.1. However I installed apache2, php5 and mysql and it is not running properly. I would like to start from scratch. Could someone please tell me how to go about removing all three components and then installing all from scratch so that it will run properly?
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Dec 17, 2014
I tried to add ac new subscription and this failed.No I have an inconsistent subscription and get the following error: New configuration files for the Apache web server were not created due to the errors in configuration templates:
Template processing failed: file = /opt/psa/admin/ conf/ templates/ default/domainVhost.php,
error = Template_Exception: No data. file: /opt/psa/admin/plib/Template/Processor.php line: 28 code: 0
Previous error: Template_Variable_Exception: No data. file: /opt/psa/admin/plib/Template/Variable/AbstractCachedData.php line: 67 code: 0.
Detailed error descriptions were sent to you by email.click here to generate broken configuration files once again or here to generate all configuration files.
I have Plesk 12.0.18 on Ubuntu
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May 9, 2009
I'm setting up a VPS server on Slicehost, I've followed the guide on howtoforge for debian and have everything installed including ISPConfig3. Everything seems to work fine at the mo but when I check the memory usage, i see that I'm using around 490/500mb of my 512mb setup. Its a Xen setup so I understand this is real memory available but I'm not sure if this is enough.
I will ultimately be running around a dozen sites, some static and some dynamic. There's one Mambo and one Joomla site there but they don't update. The rest are all php/mysql sites that I've built myself but again, they don't change that much. None of the sites currently see more than a couple hundred uniques a day, and some only a handful, so usage is not high. Most of the domains have e-mail accounts attached, but its only moderate usage with around a dozen addys per domain max.
So, do I need more memory or will 512 be enough? Is there anything I can do to reduce the load and give myself some more room?
I'm moving from a shared hosting environment and while I'm comfortable setting up the server, I would rather have a simple mail manager that would give users more control over their accounts, change passwords etc, which I'm hoping ISPConfig3 will be able to help with, but thats probably best discussed in another post.
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Apr 9, 2009
All setup following various tutorials on lamp, but having issues trying to view site url.
here what i got via dig:-
; <<>> DiG 9.3.4-P1 <<>> mp3-dash.com ANY
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45634
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 2, ADDITIONAL: 0
;; QUESTION SECTION:
;mp3-dash.com. IN ANY
;; ANSWER SECTION:
mp3-dash.com. 14400 IN A 89.46.102.100
mp3-dash.com. 14400 IN SOA ns1.mp3-dash.com.mp3-dash.com. admin@mp3-dash.com. 2009040602 86400 7200 3600000 86400
mp3-dash.com. 14400 IN MX 0 website.com.
mp3-dash.com. 500 IN NS ns1.mp3-dash.com.
mp3-dash.com. 500 IN NS ns2.mp3-dash.com.
;; AUTHORITY SECTION:
mp3-dash.com. 500 IN NS ns2.mp3-dash.com.
mp3-dash.com. 500 IN NS ns1.mp3-dash.com.
;; Query time: 24 msec
;; SERVER: 69.42.208.19#53(69.42.208.19)
;; WHEN: Thu Apr 9 20:47:14 2009
;; MSG SIZE rcvd: 202
does that all look ok, i have even ran dns lookup
and here what i getting:-
Searching for mp3-dash.com. A record at G.ROOT-SERVERS.NET. [192.112.36.4] ...took 30 ms
Searching for mp3-dash.com. A record at F.GTLD-SERVERS.NET. [192.35.51.30] ...took 158 ms
Searching for mp3-dash.com. A record at ns2.mp3-dash.com. [89.46.102.75]
Query timed out (interrupted after 1,999 milliseconds)
Retrying...
Searching for mp3-dash.com. A record at ns1.mp3-dash.com. [89.46.102.74]
Query timed out (interrupted after 2,000 milliseconds)
Retrying...
Searching for mp3-dash.com. A record at ns2.mp3-dash.com. [89.46.102.75]
Query timed out (interrupted after 2,004 milliseconds)
Retrying...
Searching for mp3-dash.com. A record at ns1.mp3-dash.com. [89.46.102.74]
Query timed out (interrupted after 2,000 milliseconds)
None of the nameservers responded correctly.
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Apr 19, 2008
an example Anaconda file that I can use to silently setup CentOS 5 VM's (under Xen, also CentOS5).
Typically, I am looking for LAMP+standard tools, e.g. FTP, SSH, mail, etc.
I tried to create one myself, but the configurator seemed to ignore my specifics and install large groups of stuff anyway.
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Feb 15, 2008
I'm in the process of trying to document a process for setting up any new LAMP servers in our hosting environment and I was wondering if anyone had any input on software and best practices that they use in their environment and why. I.E.
PHP setup
Apache setup
Preferred Linux Distro
FTP program used
User creation guidelines
Default php.ini settings
Default site settings
etc.
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Feb 20, 2008
I have a cople of dedicated servers. Both run the same software, phpBB forums. However, with the top command I see one of them need as much as triple memory for every apache process than the other. Here are the details:
Server 1
Hardaware: Dual Opteron 2212 + 4 GB RAM + 2 SAS 146 GB drives. CentOS5 x64
uname -a
Linux s1.tp.netmanaged.net 2.6.18-53.1.13.el5 #1 SMP Tue Feb 12 13:02:30 EST 2008 x86_64 x86_64 x86_64 GNU/Linux
ps auxf
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 10316 684 ? Ss Feb14 0:03 init [3]
root 2 0.0 0.0 0 0 ? S Feb14 0:11 [migration/0]
root 3 0.0 0.0 0 0 ? SN Feb14 0:01 [ksoftirqd/0]
root 4 0.0 0.0 0 0 ? S Feb14 0:00 [watchdog/0]
root 5 0.0 0.0 0 0 ? S Feb14 0:25 [migration/1]
root 6 0.0 0.0 0 0 ? SN Feb14 0:02 [ksoftirqd/1]
root 7 0.0 0.0 0 0 ? S Feb14 0:00 [watchdog/1]
root 8 0.0 0.0 0 0 ? S Feb14 0:00 [migration/2]
root 9 0.0 0.0 0 0 ? SN Feb14 0:00 [ksoftirqd/2]
root 10 0.0 0.0 0 0 ? S Feb14 0:00 [watchdog/2]
root 11 0.0 0.0 0 0 ? S Feb14 0:00 [migration/3]
root 12 0.0 0.0 0 0 ? SN Feb14 0:00 [ksoftirqd/3]
root 13 0.0 0.0 0 0 ? S Feb14 0:00 [watchdog/3]
root 14 0.0 0.0 0 0 ? S< Feb14 0:00 [events/0]
root 15 0.0 0.0 0 0 ? S< Feb14 0:00 [events/1]
root 16 0.0 0.0 0 0 ? S< Feb14 0:00 [events/2]
root 17 0.0 0.0 0 0 ? S< Feb14 0:00 [events/3]
root 18 0.0 0.0 0 0 ? S< Feb14 0:00 [khelper]
root 55 0.0 0.0 0 0 ? S< Feb14 0:00 [kthread]
root 63 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kblockd/]
root 64 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kblockd/]
root 65 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kblockd/]
root 66 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kblockd/]
root 67 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kacpid]
root 180 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [cqueue/0]
root 181 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [cqueue/1]
root 182 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [cqueue/2]
root 183 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [cqueue/3]
root 186 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [khubd]
root 188 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kseriod]
root 279 0.0 0.0 0 0 ? S< Feb14 0:40 \_ [kswapd0]
root 280 0.0 0.0 0 0 ? S< Feb14 1:02 \_ [kswapd1]
root 281 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [aio/0]
root 282 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [aio/1]
root 283 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [aio/2]
root 284 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [aio/3]
root 436 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kpsmouse]
root 497 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [scsi_eh_]
root 503 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [ata/0]
root 504 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [ata/1]
root 505 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [ata/2]
root 506 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [ata/3]
root 507 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [ata_aux]
root 513 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [scsi_eh_]
root 514 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [scsi_eh_]
root 515 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [scsi_eh_]
root 516 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [scsi_eh_]
root 517 0.2 0.0 0 0 ? S< Feb14 17:38 \_ [kjournal]
root 549 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kauditd]
root 1184 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kedac]
root 1700 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kmpathd/]
root 1701 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kmpathd/]
root 1702 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kmpathd/]
root 1703 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kmpathd/]
root 1734 0.0 0.0 0 0 ? S< Feb14 0:03 \_ [kjournal]
root 1736 0.0 0.0 0 0 ? S< Feb14 0:00 \_ [kjournal]
root 3220 0.0 0.0 0 0 ? SN Feb14 1:59 \_ [kipmi0]
root 5770 0.0 0.0 0 0 ? S 00:15 0:02 \_ [pdflush]
root 12519 0.0 0.0 0 0 ? S 00:48 0:02 \_ [pdflush]
root 583 0.0 0.0 13480 1624 ? S<s Feb14 0:00 /sbin/udevd -d
root 2272 0.0 0.3 23588 13780 ? Ss Feb14 0:00 /usr/sbin/rest
root 2287 0.0 0.0 81800 772 ? S<sl Feb14 0:03 auditd...
Do you realise that the x64 Opteron is needing an avarage 1.7 %MEM for each Apache process while the Xeon just needs 0.5 %MEM?
Since both use the same version of phpBB and the same version of CentOS5, while the only difference is one is x64 and the other i686, I wonder if this has to do with the way memory is handled by the x64 CentOS5.
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