Re: [PATCH 3/3] qcow2: handle_dependencies(): relax conflict detection

2021-08-23 Thread Vladimir Sementsov-Ogievskiy
20.08.2021 16:21, Hanna Reitz wrote: On 24.07.21 15:38, Vladimir Sementsov-Ogievskiy wrote: There is no conflict and no dependency if we have parallel writes to different subclusters of one cluster when cluster itself is already allocated. So, relax extra dependency. Measure performance:

Re: [PATCH 3/3] qcow2: handle_dependencies(): relax conflict detection

2021-08-20 Thread Hanna Reitz
On 24.07.21 15:38, Vladimir Sementsov-Ogievskiy wrote: There is no conflict and no dependency if we have parallel writes to different subclusters of one cluster when cluster itself is already allocated. So, relax extra dependency. Measure performance: First, prepare build/qemu-img-old and

Re: [PATCH 3/3] qcow2: handle_dependencies(): relax conflict detection

2021-08-19 Thread Eric Blake
On Sat, Jul 24, 2021 at 04:38:46PM +0300, Vladimir Sementsov-Ogievskiy wrote: > There is no conflict and no dependency if we have parallel writes to > different subclusters of one cluster when cluster itself is already when the cluster itself > allocated. So, relax extra dependency. > > Measure

[PATCH 3/3] qcow2: handle_dependencies(): relax conflict detection

2021-07-24 Thread Vladimir Sementsov-Ogievskiy
There is no conflict and no dependency if we have parallel writes to different subclusters of one cluster when cluster itself is already allocated. So, relax extra dependency. Measure performance: First, prepare build/qemu-img-old and build/qemu-img-new images. cd scripts/simplebench