How Many Resources Will Be Used for a Linux Block-Level Migration?

There are six data cache nodes configured by the Agent on a source server. The default size of a single cache node is 4 MB.

The details about the CPU usage during a Linux block-level migration are as follows.

Number of CPUs	CPU Usage (%) Before the Agent Starts (n)	Default Compression Threads Configured by the Agent	CPU Usage After the Agent Starts
1	-	0. Data compression is disabled by default.	< n + 10%
2	n ≥ 50%	0. Data compression is disabled by default.	< n + 10%
2	n < 50%	1	< n + 50%
4	n ≥ 75%	0. Data compression is disabled by default.	< n + 4%
4	50% ≤ = n ≤ 75%	1	< n + 25%
4	25% ≤ n < 50%	2	< n + 50%
4	n < 25%	3	< n + 75%
8	n ≥ 87%	0. Data compression is disabled by default.	< n + 3%
8	75% ≤ n < 87%	1	< n + 13%
8	62% ≤ n < 75%	2	< n + 25%
8	n < 62%	3	< n + 38%
16	n ≥ 93%	0. Data compression is disabled by default.	< n + 1%
16	87% ≤ n < 93%	1	< n + 6%
16	82% ≤ n < 87%	2	< n + 13%
16	n < 82%	3	< n + 17%
≥ 32	-	3	< n + 10%

If data compression is enabled, the formula for calculating the CPU usage after the Agent starts is as follows:
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in which, c indicates the number of CPUs, p indicates the number of compression threads, and n indicates the CPU usage before the Agent starts.
If data compression is disabled, the Agent occupies less than 10% of memory. The formula for calculating the CPU usage is as follows:
$\text{[math]}$

By default, data compression is enabled for Linux block migrations. To disable this function, see How Do I Disable Data Compression When the CPU Usage Is Too High During a Linux Block-level Migration?