Configuring distribution algorithm and golden ratio for backup hosts
To enhance the backup performance, you can configure the distribution algorithm and golden ratio based on the tunable parameters. You can improve the backup performance by Performance fine tuning of these algorithms is possible via combination of distribution algorithm and golden ratio.
To decide the distribution algorithm and golden ratio, consider the following:
If you have
small number of large sized filesin your data set: Use distribution algorithm 1 and change in golden ratio is not honored.If you have
large number of small sized filesin your data set: Use distribution algorithm 2 and change in golden ratio is not honored.If you have
small number of very large sized files and large number of small sized filesin your data set: Use distribution algorithm 4 or 5 and golden ratio that fits your deployment. Golden ratio supported range is from 1 to 100. If not provided default is considered as 75.Note:
Adjusting this value can change performance drastically.
/usr/openv/var/global/To update the hadoop.conf file for configuring algorithm and golden ratio
- Update the
hadoop.conffile with the following parameters:{ "distro_algo": distribution_algorithm and "golden_ratio":godlen_ratio } - Copy this file to the following location on the backup host:
/usr/openv/var/global/