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Archive of posts tagged memory

Top – Linux System Metrics: Statistics And Interpretation

Background An important part of running Linux servers is to be able to identify and interpret the performance metrics the operating system provides.  It is usually easy (but not always) to identify performance bottlenecks.  Many a system administrator has gotten the monitoring alert that things are wrong.  With a bit of experience it should be […]

Endianness: Big Endian vs. Little Endian; Shifting and Casting Examples

Background I ran into a bug recently where I was trying to extract the lower 32 bits from a 64 bit pointer referencing two contiguous 32 bit variables in memory.   They were taken out opposite what was expected due to my confusion with the way data is stored.  There is a fairly good writeup […]