#!/usr/sbin/dtrace -qs #pragma D option strsize=8192 pid$3::*mysql_parse*:entry { self->a=1; self->query=copyinstr(arg1); self->count=0; } pid$3::*mysql_parse*:return / self->a && self->count > $2 / { printf(\"### write() count: %d ###\\n%s\\n\\n\", self->count, self->query); self->a=0; self->query=0; } pid$3::*mysql_parse*:return / self->a / { self->a=0; self->query=0; } syscall::*write*:entry / self->a / { self->count++; } tick-$1 { exit(0); }
Showing posts with label mysql tmp tables solaris dtrace. Show all posts
Showing posts with label mysql tmp tables solaris dtrace. Show all posts
Wednesday, April 14, 2010
Which sql query you think is the worst for disks ...
Based on milek.blogspot.com
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