On Sun, Dec 6, 2009 at 9:04 AM, Greg Smith <g...@2ndquadrant.com> wrote: > And that won't work at all. "Buffer" is a structure, not an integer. You > need to wait until it's been locked, then save the same data as on the read > side (relation and block number) from inside the structure. You probably > want to hook FlushBuffer to do that job. In fact, there's already a DTrace > probe in there you could easily use to collect the data you want without > even touching the source code if you can get a DTrace capable system. Note > the following code in bufmgr.c FlushBuffer:
Apropos DTrace: I have just today compiled Postgres 8.3 with --enable-dtrace on an Ubuntu 9.10 machine with no issues or workarounds. I just had to install the package systemtap-sdt-dev. I haven't tried to do anything with it just yet though... fdr -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
