Re: [Qemu-devel] [PATCH v6 1/3] migration: do not flush_compressed_data at the end of iteration

[Juan Quintela]

address@hidden wrote:
> From: Xiao Guangrong <address@hidden>
>
> flush_compressed_data() needs to wait all compression threads to
> finish their work, after that all threads are free until the
> migration feeds new request to them, reducing its call can improve
> the throughput and use CPU resource more effectively
>
> We do not need to flush all threads at the end of iteration, the
> data can be kept locally until the memory block is changed or
> memory migration starts over in that case we will meet a dirtied
> page which may still exists in compression threads's ring
>
> Signed-off-by: Xiao Guangrong <address@hidden>


Reviewed-by: Juan Quintela <address@hidden>