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Improve logging of autovacuum I/O activity

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This adds some I/O stats to the logging of autovacuum (when the
operation takes long enough that log_autovacuum_min_duration causes it
to be logged), so that it is easier to tune.  Notably, it adds buffer
I/O counts (hits, misses, dirtied) and read and write rate.

Authors: Greg Smith and Noah Misch
This commit is contained in:
Alvaro Herrera
2011-11-25 12:10:46 -03:00
parent 877b67c38b
commit 9d3b502443
5 changed files with 54 additions and 9 deletions
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4
src/include/miscadmin.h
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@@ -230,6 +230,10 @@ extern int VacuumCostPageDirty;
extern int VacuumCostLimit;
extern int VacuumCostDelay;
extern int VacuumPageHit;
extern int VacuumPageMiss;
extern int VacuumPageDirty;
extern int VacuumCostBalance;
extern bool VacuumCostActive;