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  #1  
Old 03-03-2010
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Join Date: Feb 2010
Posts: 149
System Performance Testing and Analysis in linux

Hi all,

I am using Linux. Main problem is most of the hardware performance and CPU, disk, memory related, has not encountered since the development of language operating efficiency of the overall application performance impact, while the defects in application design and database queries far the most common abuse of contrary performance issues. So i want to know that how to check System Performance Testing and Analysis in Linux. Please suggest. Thanks in advance.
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  #2  
Old 03-03-2010
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Join Date: Apr 2008
Posts: 1,948
System Performance Testing and Analysis in linux

In most cases, although the performance bottleneck is the cause of poor application performance or the out of memory or disk bottlenecks for various reasons, but in the end result is a CPU shown depletion of high system load in response to slow , and even temporary loss of response, so we observe the situation of the server, the first to look at is the system load and CPU idle degrees. When you are finished reading it all over the document systematic analysis of the future will have an idea. Check and reply.
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  #3  
Old 03-03-2010
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Join Date: Apr 2008
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System Performance Testing and Analysis in linux

The purpose of performance analysis is to identify system performance bottlenecks. There are different, Just check below:
(1) Hardware bottlenecks
(2) Software Bottleneck
It is provide performance-optimized programs
(1) Upgrade hardware
(2) Improve the system architecture
(3) To achieve a reasonable hardware and software configuration
(4) Make the system achieve a balanced use of resources.
All the best.
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  #4  
Old 03-03-2010
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Join Date: Jan 2008
Posts: 1,515
System Performance Testing and Analysis in linux

You can also check Hardware Resources like
# CPU
(1) whether the use of SMP.
(2) single-CPU performance of CPU-dependent effects of certain applications very serious, such as a database query processing.
# Memory
(1) Physical Memory- Will be used when physical memory is not enough to exchange the memory.
(2) Exchange of memory- The use of the exchange of memory will bring the cost of disk IO and CPU increase.
# Storage System
# SCSI Disk
# ATA / SATA disks
# RAID disk array (RAID0, RAID1, RAID5, RAID0 +1)

Check and reply.
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  #5  
Old 03-03-2010
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Join Date: Oct 2005
Posts: 2,389
System Performance Testing and Analysis in linux

A typical application of the system characterized by the use of resources that is dynamic content-based Web Applications
(1) frequent enforcement procedures, such as Perl, PHP, Java, etc., consume CPU seriously.
(2) to provide concurrent user access, so the number of multi-system processes, consuming more memory, when memory, the use of the exchange of memory will increase the CPU overhead.
(3) the disk IO to write more frequent (mainly random write), such as generating cache files, update the session files.
(4) The memory is sufficient to read the contents of the cache can be to live, cache hit rate and inversely proportional to the frequency of file updates, disk read IO is relatively small. Check and reply.
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  #6  
Old 03-03-2010
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Join Date: May 2008
Posts: 2,383
System Performance Testing and Analysis in linux

The system and optimize the use of the principles of like System Monitoring and Data Usage of resources for long-term monitoring and data collection
# Snmp + MRTG (network traffic monitoring)
# Sar (system data monitoring and collection)
# Restrict the use of system resources
# To avoid the unrestricted use of system resources
The services set quotas for the use of resources, such as Apache, MySQL, PHP, etc.

check that and reply
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