2011

Table Of Contents
The behavior of disk I/O tests is controlled by the following sub-options:
Mode
Size
Blocks
Queue
mode=<ro|wo|rw> where ro indicates that only read performance is
measured, rw indicates that both read and write performance is measured and
wo that only writing performance is measured. The default mode is ro.
time=<s> where <s> is the number of seconds devoted to each transfer test.
The default is 5. For each of read and write, performance measurements will
be accumulated over <s> seconds.
size=<s> where <s> is the number of kilobytes of each file used for testing
I/O performance. The default size is 4096.
blocks=<s> where <s> is the size of I/O blocks, in kilobytes used for testing
I/O performance. I/O will be performed in blocks of this size. The default will
be 512.
queue=<q> where <q> is the number of outstanding requests. The default
will be 32.
Memory
The memory performance tests are controlled by the -mem switch. Using this
switch will cause memory-to-memory transfers to be measured for performance.
The goal of these tests is to allow the FSB to be used during disk and cache
tests so that FSB contention can be detected.
The behavior of memory tests is controlled by the following sub-options:
Time
Blocks
Memory
time=<s> where <s> is the number of seconds devoted to the memory tests.
The default is 5. Performance numbers will be accumulated over <s> seconds.
Memory | 865