Database Reference
In-Depth Information
•
sample#index-cache-hit-rate
: The rate of the lookups index provided by the
shared buffer cache, rounded to 5 decimal points.
•
sample#table-cache-hit-rate
: The rate of table lookups provided by the shared
buffer cache, rounded to 5 decimal points.
•
sample#waiting-connections
: Connection numbers waiting to be purchased. If
many connections are waiting, this can be a sign of database concurrence mis-
treated.
•
sample#load-avg-1m
,
sample#load-avg-5m
and
sample#load-avg-15m
: The
system load average within 1 minute, 5 minutes, and 15 minutes, divided by the
number of available CPUs.
•
sample#read-iops
and
sample#writes-iops
: The number of reads and writes for
each block of 16 KB of I/O.
•
sample#memory-total
: Total available memory in KB.
•
sample#memory-free
: Total free memory in KB.
•
sample#memory-cached
: Total cache memory in KB.
•
sample#memory-postgres
: Approximate total of memory used by PostgreSQL
in KB.