System information

3-10
AlphaServer 800 Service Guide
3.2.5 memexer
The memexer command tests memory by running a specified number of memory
exercisers. The exercisers are run in the background and nothing is displayed unless
an error occurs. Each exerciser tests all available memory in twice the backup cache
size blocks for each pass.
To terminate the memory tests, use the kill command to terminate an individual
diagnostic or the kill_diags command to terminate all diagnostics. Use the
show_status display to determine the process ID when terminating an individual
diagnostic test.
Syntax
memexer [number]
Argument:
[number] Number of memory exercisers to start. The default is 1.
The number of exercisers, as well as the length of time for testing,
depends on the context of the testing. Generally, running three to five
exercisers for 15 minutes to 1 hour is sufficient for troubleshooting
most memory problems.
Examples
The following is an example with no errors.
>>> memexer 4
>>> show_status
ID Program Device Pass Hard/Soft Bytes Written Bytes Read
--- ------------ ------------ ------ --------- ----------
00000001 idle system 0 0 0 0 0
000000c7 memtest memory 3 0 0 635651584 62565154
000000cc memtest memory 2 0 0 635651584 62565154
000000d0 memtest memory 2 0 0 635651584 62565154
000000d1 memtest memory 3 0 0 635651584
62565154
>>> kill_diags
>>>