[Monetdb-developers] do_not_use_posix_fadvise

Stefan de Konink stefan at konink.de
Mon Mar 23 10:03:09 CET 2009


Hi,


What is the rationale to enable or disable fadvise explicitly?

do_not_use_posix_fadvise = uname(&ubuf) == 0 && strcmp(ubuf.sysname, 
"Linux") == 0 && strncmp(ubuf.release, "2.4", 3) <= 0;


Answers as "it doesn't work" will not satisfy my hunger to this answer; 
because I do see a completely different performance upon manual changing 
this variable.


Stefan




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