mirror of
https://github.com/postgres/postgres.git
synced 2025-07-07 00:36:50 +03:00
96f052613f
Historically, the statistics of the checkpointer have been always part of pg_stat_bgwriter. This commit removes a few columns from pg_stat_bgwriter, and introduces pg_stat_checkpointer with equivalent, renamed columns (plus a new one for the reset timestamp): - checkpoints_timed -> num_timed - checkpoints_req -> num_requested - checkpoint_write_time -> write_time - checkpoint_sync_time -> sync_time - buffers_checkpoint -> buffers_written The fields of PgStat_CheckpointerStats and its SQL functions are renamed to match with the new field names, for consistency. Note that background writer and checkpointer have been split into two different processes in commits806a2aee37andbf405ba8e4. The pgstat structures were already split, making this change straight-forward. Bump catalog version. Author: Bharath Rupireddy Reviewed-by: Bertrand Drouvot, Andres Freund, Michael Paquier Discussion: https://postgr.es/m/CALj2ACVxX2ii=66RypXRweZe2EsBRiPMj0aHfRfHUeXJcC7kHg@mail.gmail.com
# Generating dummy probes If Postgres isn't configured with dtrace enabled, we need to generate dummy probes for the entries in probes.d, that do nothing. This is accomplished in Unix via the sed script `Gen_dummy_probes.sed`. We used to use this in MSVC builds using the perl utility `psed`, which mimicked sed. However, that utility disappeared from Windows perl distributions and so we converted the sed script to a perl script to be used in MSVC builds. We still keep the sed script as the authoritative source for generating these dummy probes because except on Windows perl is not a hard requirement when building from a tarball. So, if you need to change the way dummy probes are generated, first change the sed script, and when it's working generate the perl script. This can be accomplished by using the perl utility s2p. s2p is no longer part of the perl core, so it might not be on your system, but it is available on CPAN and also in many package systems. e.g. on Fedora it can be installed using `cpan App::s2p` or `dnf install perl-App-s2p`. The Makefile contains a recipe for regenerating Gen_dummy_probes.pl, so all you need to do is once you have s2p installed is `make Gen_dummy_probes.pl` Note that in a VPATH build this will generate the file in the vpath tree, not the source tree.