jm + page-cache   1

pcstat
get page cache statistics for files.
A common question when tuning databases and other IO-intensive applications is, "is Linux caching my data or not?" pcstat gets that information for you using the mincore(2) syscall. I wrote this is so that Apache Cassandra users can see if ssTables are being cached.
linux  page-cache  caching  go  performance  cassandra  ops  mincore  fincore 
september 2014 by jm

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