Configuring the Number of I/O Operations Per SecondIn Parallels Cloud Server, you can limit the maximum number of disk input and output operations per second virtual machines and Containers are allowed to perform (known as the IOPS limit). You may consider setting the IOPS limit for virtual machines and Containers with high disk activities to ensure that they do not affect the performance of other virtual machines and Containers on the Node.
Note:
By default all I/O inside Containers is cached and the direct access flag (
By default, IOPS is not limited for newly created virtual machines and Containers. To set the IOPS limit, you can use the
# prlctl set 101 --iopslimit 100 # prlctl set MyVM --iopslimit 100
To ensure that the IOPS limit has been successfully applied to Container 101 and the
# pstat -A ST IOUSED IOWAIT IO IOPS NAME OK 0.00 0.00 0.0/---KB/s 0.0/100/s MyVM OK 0.00 0.00 0.0/---KB/s 0.0/100/s 101
The
IOPS
column shows the IOPS limits currently applied to Container 101 and the
At any time, you can remove the set IOPS limits by running these commands: # prlctl set 101 --iopslimit 0 # prlctl set MyVM --iopslimit 0 Setting the Direct Access Flag inside Containers
You can configure honoring of the
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