Re: [PATCH v22 3/4] qcow2: add zstd cluster compression

2020-05-04 Thread Max Reitz
On 30.04.20 15:56, Denis Plotnikov wrote: > > > On 30.04.2020 14:47, Max Reitz wrote: >> On 30.04.20 11:48, Denis Plotnikov wrote: >>> >>> On 30.04.2020 11:26, Max Reitz wrote: On 29.04.20 15:02, Vladimir Sementsov-Ogievskiy wrote: > 29.04.2020 15:17, Max Reitz wrote: >> On 29.04.20

Re: [PATCH v22 3/4] qcow2: add zstd cluster compression

2020-04-30 Thread Denis Plotnikov
On 30.04.2020 14:47, Max Reitz wrote: On 30.04.20 11:48, Denis Plotnikov wrote: On 30.04.2020 11:26, Max Reitz wrote: On 29.04.20 15:02, Vladimir Sementsov-Ogievskiy wrote: 29.04.2020 15:17, Max Reitz wrote: On 29.04.20 12:37, Vladimir Sementsov-Ogievskiy wrote: 29.04.2020 13:24, Max

Re: [PATCH v22 3/4] qcow2: add zstd cluster compression

2020-04-30 Thread Max Reitz
On 30.04.20 11:48, Denis Plotnikov wrote: > > > On 30.04.2020 11:26, Max Reitz wrote: >> On 29.04.20 15:02, Vladimir Sementsov-Ogievskiy wrote: >>> 29.04.2020 15:17, Max Reitz wrote: On 29.04.20 12:37, Vladimir Sementsov-Ogievskiy wrote: > 29.04.2020 13:24, Max Reitz wrote: >> On

Re: [PATCH v22 3/4] qcow2: add zstd cluster compression

2020-04-30 Thread Denis Plotnikov
On 30.04.2020 11:26, Max Reitz wrote: On 29.04.20 15:02, Vladimir Sementsov-Ogievskiy wrote: 29.04.2020 15:17, Max Reitz wrote: On 29.04.20 12:37, Vladimir Sementsov-Ogievskiy wrote: 29.04.2020 13:24, Max Reitz wrote: On 28.04.20 22:00, Denis Plotnikov wrote: zstd significantly reduces

Re: [PATCH v22 3/4] qcow2: add zstd cluster compression

2020-04-30 Thread Max Reitz
On 29.04.20 15:02, Vladimir Sementsov-Ogievskiy wrote: > 29.04.2020 15:17, Max Reitz wrote: >> On 29.04.20 12:37, Vladimir Sementsov-Ogievskiy wrote: >>> 29.04.2020 13:24, Max Reitz wrote: On 28.04.20 22:00, Denis Plotnikov wrote: > zstd significantly reduces cluster compression time.

Re: [PATCH v22 3/4] qcow2: add zstd cluster compression

2020-04-29 Thread Eric Blake
On 4/29/20 8:02 AM, Vladimir Sementsov-Ogievskiy wrote: +    /* + * The compressed stream from the input buffer may consist of more + * than one zstd frame. Can it? If not, we must require it in the specification. Actually, now that you mention it, it would make sense anyway to

Re: [PATCH v22 3/4] qcow2: add zstd cluster compression

2020-04-29 Thread Vladimir Sementsov-Ogievskiy
29.04.2020 15:17, Max Reitz wrote: On 29.04.20 12:37, Vladimir Sementsov-Ogievskiy wrote: 29.04.2020 13:24, Max Reitz wrote: On 28.04.20 22:00, Denis Plotnikov wrote: zstd significantly reduces cluster compression time. It provides better compression performance maintaining the same level of

Re: [PATCH v22 3/4] qcow2: add zstd cluster compression

2020-04-29 Thread Max Reitz
On 29.04.20 12:38, Denis Plotnikov wrote: > > > On 29.04.2020 13:24, Max Reitz wrote: >> On 28.04.20 22:00, Denis Plotnikov wrote: >>> zstd significantly reduces cluster compression time. >>> It provides better compression performance maintaining >>> the same level of the compression ratio in

Re: [PATCH v22 3/4] qcow2: add zstd cluster compression

2020-04-29 Thread Max Reitz
On 29.04.20 12:37, Vladimir Sementsov-Ogievskiy wrote: > 29.04.2020 13:24, Max Reitz wrote: >> On 28.04.20 22:00, Denis Plotnikov wrote: >>> zstd significantly reduces cluster compression time. >>> It provides better compression performance maintaining >>> the same level of the compression ratio

Re: [PATCH v22 3/4] qcow2: add zstd cluster compression

2020-04-29 Thread Denis Plotnikov
On 29.04.2020 13:24, Max Reitz wrote: On 28.04.20 22:00, Denis Plotnikov wrote: zstd significantly reduces cluster compression time. It provides better compression performance maintaining the same level of the compression ratio in comparison with zlib, which, at the moment, is the only

Re: [PATCH v22 3/4] qcow2: add zstd cluster compression

2020-04-29 Thread Vladimir Sementsov-Ogievskiy
29.04.2020 13:24, Max Reitz wrote: On 28.04.20 22:00, Denis Plotnikov wrote: zstd significantly reduces cluster compression time. It provides better compression performance maintaining the same level of the compression ratio in comparison with zlib, which, at the moment, is the only compression

Re: [PATCH v22 3/4] qcow2: add zstd cluster compression

2020-04-29 Thread Max Reitz
On 28.04.20 22:00, Denis Plotnikov wrote: > zstd significantly reduces cluster compression time. > It provides better compression performance maintaining > the same level of the compression ratio in comparison with > zlib, which, at the moment, is the only compression > method available. > > The

Re: [PATCH v22 3/4] qcow2: add zstd cluster compression

2020-04-28 Thread Eric Blake
On 4/28/20 3:00 PM, Denis Plotnikov wrote: zstd significantly reduces cluster compression time. It provides better compression performance maintaining the same level of the compression ratio in comparison with zlib, which, at the moment, is the only compression method available. The performance