Counters of logical volume

[Marcelo De Florio_1]

Anybody knows what is the meaning of this counters ?

psl_rxfer; /* # of reads */
psl_rcount; /* # of bytes read */
psl_wxfer; /* # of writes */
psl_wcount; /* # of bytes written */

MDF

[Jayesh shah]

psl_rxfer refers to the no of read requests to logical volume
psl_rcount refers to the no. of bytes read from logical volume
psl_wxfer refers to the no of write requests to logical volume
psl_wcount refers to the no of bytes written to logical volume

[Marcelo De Florio_1]

Hi, Jayesh

And then, How can i get this counters (physicall read and wirtes ?

MDF

[Alan Riggs]

If you have measurewear you can track them using eiher an extract command (which has a helpful guided mode) or with perfView if you have paid for that product.

If you have glance, you can track it interactively by looking at I/O by logical volume.

[Marcelo De Florio_1]

Sorry, so this counters shows me physical read/write.

MDF

[Alan Riggs]

measurewear has counters for both logical and physical I/O. Use the guided menus of the extract command to generate a global file with all available metrics.

Glance I/O by lvol will show logical I/O. I/O by disk will show physical I/O. I/O by file systetem will show both.