Re: [Qemu-devel] [PATCH v2 0/7] coroutine: optimizations

[Peter Lieven <pl@kamp.de>]

On 02.12.2014 12:05, Paolo Bonzini wrote:
> As discussed in the other thread, this brings speedups from
> dropping the coroutine mutex (which serializes multiple iothreads,
> too) and using ELF thread-local storage.
>
> The speedup in perf/cost is about 50% (190->125).  Windows port tested
> with tests/test-coroutine.exe under Wine.
>
> Paolo
>
> v1->v2: include the noinline attribute [many...]
> 	do not mention SwitchToFiber [Kevin]
> 	rename run_main_iothread_exit -> run_main_thread_exit
> 	leave personal opinions out of commit messages :) [Kevin]
> 	mention gain from patch 7 [Peter]
> 	change "alloc_pool_size +=" to "alloc_pool_size =" [Peter]
>
> Paolo Bonzini (7):
>    coroutine-ucontext: use __thread
>    qemu-thread: add per-thread atexit functions
>    test-coroutine: avoid overflow on 32-bit systems
>    QSLIST: add lock-free operations
>    coroutine: rewrite pool to avoid mutex
>    coroutine: drop qemu_coroutine_adjust_pool_size
>    coroutine: try harder not to delete coroutines
>
>   block/block-backend.c     |   4 --
>   coroutine-ucontext.c      |  64 +++++++---------------------
>   include/block/coroutine.h |  10 -----
>   include/qemu/queue.h      |  15 ++++++-
>   include/qemu/thread.h     |   4 ++
>   qemu-coroutine.c          | 104 ++++++++++++++++++++++------------------------
>   tests/test-coroutine.c    |   2 +-
>   util/qemu-thread-posix.c  |  37 +++++++++++++++++
>   util/qemu-thread-win32.c  |  48 ++++++++++++++++-----
>   9 files changed, 157 insertions(+), 131 deletions(-)
>

Whats the status of this series?

Peter