Thank you for visiting this page, this page has been update in another link How to know a file or a process bufferred in OS cache
Noticed it when I was looking into postgreSQL buffering I improved it a bit more, now it's able to tell you that how much data buffered in cache by a or more processes. More easier to check memory taken by processes which open uncertain files.https://sites.google.com/site/itmyshare/database-tips-and-examples/postgresql-buffering. Fincore is David Plonka's work, available at http://net.doit.wisc.edu/~plonka/fincore/It's a utility to tell you how much a file cached in the kernel's buffer. It was a C code, but implemented in perl INLINE module. Here is its usage Usage: fincore [options] <-stdin | file [...]> Options: -help - brief help message -man - full documentation -summary - report summary statistics for the files -justsummarize - just report summary statistics for the files -process - report summary statistics for the files opened by processes -verbose - verbose output -stdin - read file names from standard inputHere is an example of my desktop's firefox memory status in OS. ./fincore -process 10213 18658page size: 4096 bytesprocessing pid:'10213'processing pid:'18658'49495 pages, 193.3 Mbytes in core for 411 files; 120.43 pages, 481.7 kbytes per file. Total filesize 521.72 MbytesFor a single file ./fincore /usr/lib64/firefox/firefox -summarypage size: 4096 bytes23 pages, 92.0 kbytes in core for 1 file; 23.00 pages, 92.0 kbytes per file. Total filesize 104.96 kbytes |
