By default, the Block Storage API service runs in one process. This limits the number of API requests that the Block Storage service can process at any given time. In a production environment, you should increase the Block Storage API throughput by allowing the Block Storage API service to run in as many processes as the machine capacity allows.
The Block Storage API service is named
the following distributions: CentOS, Fedora, openSUSE, Red Hat
Enterprise Linux, and SUSE Linux Enterprise. In Ubuntu and Debian
distributions, the Block Storage API service is named
To do so, use the Block Storage API service option
This option allows you to specify the number of API service workers
(or OS processes) to launch for the Block Storage API service.
To configure this option, open the
configuration file and set the
key to the number of CPU cores/threads on a machine.
On distributions that include
openstack-config, you can configure
this by running the following command instead:
# openstack-config --set /etc/cinder/cinder.conf \ DEFAULT osapi_volume_workers CORES
CORES with the number of CPU cores/threads on a machine.