资 源 简 介
DD TESTSUITE
This package contains a set of scripts which can be used to perform dd-based
I/O tests. These tests will conduct simultaneous read and write requests in a
ratio of 2:1 using 2GiB files by default.
First, in order to perform read tests an initial set of input files needs to be
set up. The create_inputfiles.sh script does this. The usage is as follows:
create_inputfiles.sh
The script doing the reads will pick one of these files at random.
The idea is that initially a fairly large number of files are created that will
be used for the read test. During the test, read processes will pick one of these
files at random. We have selected a file size of 2GiB since this is a typical file
size in use with our users. The total size of all of these files combined should
be equal to or greater than 25 times the total amount of memory on the host where
the test is run which gives an indication on how many files should be created.
