Database Reference
In-Depth Information
•
gpcheckperf
: It helps identify hardware issues. This must have a trusted
host setup between the hosts involved in the performance test. It calls to
gpssh
and
gpscp
, so these utilities must also be in our $PATH.
•
gpcheckperf
: It performs the following:
• Disk I/O test
• Memory bandwidth test (This utility uses the
STREAM
benchmark pro-
gram to measure sustainable memory bandwidth (in MB/s) and net-
work performance test (
gpnetbench
). This test is best used to val-
idate if the switch fabric can tolerate a full-matrix workload. For addi-
tionalinformationon
gpstate
and
gpcheckperf
refertotheGreen-
plum Database Utility guide.)
Note
gpcheckperf
puts considerable strain on a system and should not be
used on an active, production system.
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