compile transmission from source code.Can't multi threads

[littlema]

I compile the tr from source code,and Ifind that when I download many bt torrents.It only use 1 cpu(I have 6).
When I use the old version from apt, I find the multi threads work.
My computer is arm64 rk3399 NanoPi 4with armbian(base on debian).
where is the problem?
the old version in apt is 2.9.2
I compile in 2.9.4

[Igor]

4 hours ago, littlema said:

where is the problem?

https://github.com/transmission/transmission/issues