Category: performance management

Useful Linux Memory Calculation Commands

Calculate total memory used by apps To free pagecache: To free dentries and inodes: To free pagecache, dentries and inodes: dd physical memory being used by a user, in this it’s user daemon see how many processes are using swap: list the top 10…

TCP/IP Tuning

Improving Network Performance When it comes to network performance, unless there is an explicit problem, leave the network optimization to the kernel. If you see a network problem, then study the problem in detail and come up with a solution for that problem, and…

Filesystem Tuning

Tips for RedHat filesystem tuning. – Optimize file system block size. Block size is selected at mkfs time. If you plan on storing mostly smaller or larger files than the default block size, then decrease or increase the block size of the filesystem during…

Load Balancing Algorithms

Load balancers use a number of algorithms to direct traffic. Some of the most common algorithms are listed below. 1)Random: Using a random number generator, the load balancer directs connections randomly to the web servers behind it. This type of algorithm may be used…

CentOS CPU Scaling

CPU Scaling allows the processor to adjust speed on demand. CPUfreq governor defines the speed and power usage of a processor. The different types of governors are: cpufreq_performance – for heavy workloads, always uses the highest cpu frequency, cost is power cpufreq_powersave – uses…

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