Using The Cli Performance Monitor - Dell PowerVault MD3000i Tuning Manual

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices
Figure 10: Second Generation Firmware - Write Algorithms
Volume 1 Attributes:
Volume Type:
User Label:
...
BlockSize:
LargeIoSize:
...
Perf. Stats:
Reads
Writes
Large Reads
Large Writes
Total
...
*** Performance stats ***
Cluster Reads
Stripe Writes
RPA Requests
Full Writes
No Parity Writes

4.8 Using the CLI Performance Monitor

The CLI Performance Monitor is a command line scripting utility that provides
access to all functions of PowerVault Storage Manager and some additional
performance statistics. In Microsoft Windows, the scripting utility is named
smcli.exe and is located by default in the c:\program files\Dell\MD
Storage Manage\client directory. The complete reference guide Command
Line Interface Guide for the MD3000/3000i is located on Dell's support website at
http://support.dell.com/manuals.
The following are examples of CLI commands.
The command to run the CLI Performance Monitor is:
SMcli -n ArrayName -c "set session performanceMonitorInterval=5
performanceMonitorIterations=30;save storageArray performanceStats
file=\"performance.csv\";"
December 2008 – Revision A01
RAIDVolume
MyRAID5vd
512 bytes
4096 blocks
Requests
577761063 1155647889
82542765
660303828 1331335766
Cluster Writes
6252626 3015009
Cache Hits
2040493 4685032
RPA Width
982036 3932113
Partial Writes
653386
Fast Writes
0
Blocks Avg. Blks
175687877
0 0
0 0
Stripe Reads
5334257
Cache Hit Blks
737770040
RPA Depth
418860162
RMW Writes
29 328612
Full Stripe WT
0
IO Percent
2 87.50%
2 12.50%
0 0.00%
0 0.00%
2 100.00%
0
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