Exer - Compaq ES40CSLP Installation, User & Service Manual

6.6.2.6 exer

The exer command exercises one or more devices by performing specified read, write, and
compare operations.
•
A read operation reads from a device that you specify into a buffer.
•
A write operation writes from a buffer to a device that you specify.
•
A compare operation compares the contents of the two buffers.
The exer command uses two buffers to carry out the operations, buffer1 and buffer2. A read or
write operation can be performed using either buffer; a compare operation uses both buffers.
You can use options to specify the following:
•
An address range to test within the test device(s).
•
The packet size (or I/O size) which is the number of bytes read or written in one I/O
operation.
•
The number of passes to run.
•
How many seconds to run for a sequence of individual operations performed on the test
devices. The qualifier used to specify this is called the action string qualifier.
Syntax
Exer ([-sb <start_block>] [-eb <end_block>] [-p <pass_count>]
[-l <blocks>] [-bs <block_size>] [-bc <blocks_per_io>]
[-d1 <buf1_string>] [-d2 <buf2_string>] [-a <action_string>]
[-sec <seconds>] [-m] [-v] [-delay <milliseconds>] <device_name>...)
Arguments:
<device_name>...
Options
-sb <start_block>
-eb <end_block>
-p <pass_count>
-l <blocks>
-bs <block_size>
-bc <block_per_io>
-d1 <buf1_string>
-d2 <buf2_string>
Specifies the names of the devices or filestreams to be exercised.
Specifies the starting block number (hex) within filestream. The default is
0.
Specifies the ending block number (hex) within filestream. The default is 0
Specifies the number of passes to run the exerciser. If 0, then run
continuously or until Ctrl/C is pressed. The default is 1.
Specifies the number of blocks (hex) to exercise. l has precedence over eb.
If only reading, then specifying neither l nor eb defaults to read until eof. If
writing, and neither l nor eb is specified, then exer writes for the size of the
device. The default is 1.
Specifies the block size (hex) in bytes. The default is 200 (hex).
Specifies the number of blocks (hex) per I/O. On devices without length
(tape), use the specified packet size or default to 2048. The maximum block
size allowed with variable length block reads is 2048. The default is 1.
String arg for eval to gen buffer1 data pattern from buffer1 is initialized
only once and that is before any I/O occurs. Default = all bytes set to hex
5A's.
String arg for eval to gen buffer2 data pattern from buffer2 is initialized
only once and that is before any I/O occurs. Default = all bytes set to hex
5A's.
Compaq ES40CSLP Rackmount System Installation/User/Service Guide 6–29
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