[rrd-users] rrdtool cluster filesystem question

Simone Caruso info at simonecaruso.com
Thu Dec 29 12:03:54 CET 2011

>> What are the performance difference if i use MMAP or not ?
mmap is a kernel syscall that simply map a file into a single address space to
simplify programming (seek, r/w) into file. Generally mmap I/O is faster than
block reads. Mmap on NFS can give some problem, i don't know about mmap behavior
on clustered fs.

Simone Caruso
IT Consultant
+39 349 65 90 805

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