HP 3PAR OS 3.1.3 CLI Administrator's Manual

Avg Average IOPS over all iterations of the statqos command so
far
Max Maximum IOPS over all iterations of the statqos command
so far
Kbytes_per_second IOPS cap, set by the userQt
Cur Current IOPS
Avg Average IOPS over all iterations of the statqos command so
far
Max Maximum IOPS over all iterations of the statqos command
so far
Svt_ms Total service time of I/Os processed by QoS (including wait time and
the real service time)
Wtt_ms Wait time of I/Os delayed by QoS
IOSz_KB I/O block size in KB (1 KB = 1000 bytes)
Rej Accumulated number of I/Os rejected by QoS
WQlen Instantaneous average number of I/Os delayed by QoS
Qlen Instantaneous average number of I/Os processed by QoS (including
the number of I/Os delayed by QoS and number of I/Os processed
by QoS without delay)
You can filter by VVset by using the srstatvlun command. This can be useful in determining
which VVs in a given VVset contribute the most in reaching the QoS limit.
Using the statqos interface, the On-Node tool in HP 3PAR System Reporter samples QoS statistics
periodically, and stores this information for all active QoS rules. The srstatqos command will
report the statistics for the QoS rules for one or more VVsets for any desired time window. The
high resolution sampling extracts QoS statistics data in 5–minute periods. srstatqos options
mirror the options of other srstat commands.
Event Management
There is no mechanism to alert storage administrators of rejected I/O requests. Instead, monitor
the QoS rules as described in “Reporting” (page 159). The debug event logs will show QFULL
messages for rejected I/O requests if they occur. To display the debug event log, issue the following
HP 3PAR CLI command:
# showeventlog –debug –msg Qfull
The following example shows a rejected I/O request:
Time : 2013-06-03 14:04:23 CEST
Severity : Debug
Type : Host error
Message : Port 0:1:1 -- SCSI status 0x28 (Qfull) Host:ireland.bel.hp.com (WWN
50060B0000C26612) LUN:2 LUN WWN:60002AC000000000000000AC000009AD VV:0
CDB:28002552AA4000002000 (Read10) Skey:0x00 (No sense) asc/q:0x00/00 (No additional
sense information) VVstat:0x00 (TE_PASS -- Success) after 0.000s (-) toterr:9720,
lunerr:2
160 HP Priority Optimization