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ememos / GiantVM

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Support receiving signals when connecting to RDMA #21

Open YWHyuk opened 3 years ago

YWHyuk commented 3 years ago

This patch make signal works during the connection of RDMA. It is implemented by moving "start_io_router" forward.

"start_io_router" function does

Those are quite position independent. So moving it forward will not make problems

Anyway, we can terminate the qemu by SIGINT(Ctrl+ c)🙌! Thank you!

ememos commented 3 years ago

I tested the revised version you suggested. As a result of the test, an abnormal symptom of frequent soft lockup occurred. When I revert to the original version, the soft lockup phenomenon disappears. In my test, I made a total of 20 vCPUs on two nodes, and I booted guest os. I tested memcpy benchmark.

The following is a screenshot of guest booting. image

image

YWHyuk commented 3 years ago

@ememos

I tested the revised version you suggested. As a result of the test, an abnormal symptom of frequent soft lockup occurred. When I revert to the original version, the soft lockup phenomenon disappears. In my test, I made a total of 20 vCPUs on two nodes, and I booted guest os. I tested memcpy benchmark.

Hmm.... It is strange😭. I tested it just a minute ago. But it works well.. My result is this.

  • Left top terminal: Guest OS's top
  • Left bottom terminal: memcpy benchmark on the Guest OS(By ssh)
  • Right terminal: the other node log

memcpy My environment is 8 vCPUS. At the upper left terminal, I can see that all vCPU is utilized..

I don't know what's the reason for soft-lockup.