cpu

/proc/cpuinfo has the info you need to identify the number of processors, cores and threads.

To get the total number of processors/cpu cores:

Total number of physical cpus:

Number of cores per cpu:

To check if hyperthreading is enabled:

If siblings is a multiple of cores then hyperthreading is enabled.

Below is command to run process with the least CPU and IO priority.

You could also include the same in the beginning of the script:

References:

• Using ionice
  
• Avoid Sudden I/O Outburst

You can try this to find out if your CPU/Processor is 32 bit or 64 bit:

lm means Long Mode = 64 bit CPU

Also:

Should display 32 or 64.

Can anybody help me?
Basically my app is for an email marketing, so using a while statement its reads from a db (mysam) and make updates

Thank in advance!!

This is the info about my VPS (when typing )
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
Mem: 1206272 kB
OS: CentOS release 5.3 (Final)
Mysql: 5.0.45-log

This is my my.cnf:
[client]
port = 3306
socket = /var/lib/mysql/mysql.sock

###The MySQL server
[mysqld]
set-variable=local-infile=0

If the below produces lm (long mode) flags, then the cpu has support for x86_64 architecture.

I have seen quite a few dedicated servers with support for x86_64 architecture, but i386 installed instead.

When doing a `uname -a`, the output misleads you to think that x86_64 is not supported. Such machines do not fully utilize the hardware resources and decreases performance of you box.