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Published on 2010-06-09T03:32:20Z
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2010/06/09
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How can I dtrace a particular php script which I would like to know what happen inside it? eg. myphpscript.php
It's hard to trace using PID as it does not run in background.
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I have been trying to resolve my issue of spiking cpu caused by php-fpm processes. I've reduced the php-fpm config settings to:
pm = ondemand
pm.max_children = 12
pm.start_servers = 2
pm.min_spare_servers = 2
pm.max_spare_servers = 10
pm.max_requests = 500
php_admin_value[memory_limit] = 128M
Problem…
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[root@ip ~]# yum install php-pear*
Reducing CentOS-5 Testing to included packages only
Finished
Setting up Install Process
Package 1:php-pear-1.8.1-2.el5.centos.noarch already installed and latest versio …
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I am taking over an application server and discover that it contain the following settings:
AddType text/html php
Although it works, but my understanding is that it should set as following:
AddType application/x-httpd-php php .php
What are the key differences between the two settings?…
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Hello.
I have a server with VBulletin forum (working under Apache 2.2, CentOS). The default settings for it in .htaccess are as follows:
RewriteEngine on
RewriteCond %{HTTP_HOST} ^gsmforum\.ru
RewriteRule (.*) http://www.gsmforum.ru/$1 [R=301,L]
# If you are having problems or are using VirtualDocumentRoot…
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I have installed memcached fine, and now I will need to install PECL extension memcache. Im running RedHat x86_64 es5. The installation gives me this:
downloading memcache-2.2.6.tgz ...
Starting to download memcache-2.2.6.tgz (35,957 bytes)
..........done: 35,957 bytes
11 source files, building
running:…
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One key measure to use when assessing TCP throughput is assessing the amount of unacknowledged data in the pipe. This is sometimes termed the Bandwidth Delay Product (BDP) (note that BDP is often used more generally as the product of the link capacity and the end-to-end delay). In DTrace terms, the…
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How can I dtrace a particular php script which I would like to know what happen inside it?
eg. myphpscript.php
It's hard to trace using PID as it does not run in background.
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How do I enable users to use dtrace on Mac OS X. I am trying to do the equivalent of strace on Linux, and I don't like running applications with elevated privileges.
UPDATE
Ok, the best I can tell. The only way to keep a nefarious application from ruining the system by debugging it is to.
Attach…
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DTrace is impressive, powerful tracing system originally from Solaris, but it is ported to FreeBSD and Mac OSX.
DTrace uses a high-level language called D not unlike AWK or C. Here is an example:
io:::start
/pid == $1/
{
printf("file %s offset %d size %d block %llu\n", args[2]->fi_pathname…
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???Solaris DTrace??????????????Linux??? 3????????????????????????Project News: DTrace - oss.oracle.com2012.10.01: DTrace 0.3.1????????????????????????????????????????????????? DTrace update to 0.2 (Wim Coekaerts Blog)on Feb 22, 2012We just put an updated version of DTrace on ULN. This is version…
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