openstack/rally-openstack
Code Issues Proposed changes

VMTasks.dd_load: No random input for write test

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For a dd write test it does not matter whether input data comes from
/dev/random or from /dev/zero.
To speed up the creation of test data this patch replaces /dev/random as
write test source with /dev/zero.

Co-Authored-By: Daniel Haupt <daniel.haupt@sap.com>

Change-Id: I3bcb25ec82920fa340e1bbe08e2d6f473de5c5bd
This commit is contained in:
Daniel Gonzalez 2017-10-09 17:44:34 +03:00 committed by Andrey Kurilin
parent a913477f2b
commit a615e8ae13
1 changed files with 1 additions and 1 deletions
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2
rally/plugins/openstack/scenarios/vm/vmtasks.py
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@ -438,7 +438,7 @@ EOF
additive_dd() { additive_dd() {
local c=${1:-50} # Megabytes local c=${1:-50} # Megabytes
local file=/tmp/dd_test.img local file=/tmp/dd_test.img
local write=$(get_seconds "dd if=/dev/urandom of=${file} bs=1M count=${c}") local write=$(get_seconds "dd if=/dev/zero of=${file} bs=1M count=${c}")
local read=$(get_seconds "dd if=${file} of=/dev/null bs=1M count=${c}") local read=$(get_seconds "dd if=${file} of=/dev/null bs=1M count=${c}")
local gzip=$(get_seconds "gzip ${file}") local gzip=$(get_seconds "gzip ${file}")
rm ${file}.gz rm ${file}.gz