CLS-ZStd

[Razor12911]

Originally Posted by felice2011

-↓- [ CMD Bench.Test.Info v0.0.6c ] -↓- Compressed Archive Completed At -↓- 08/10/2016 13:54:37
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 ○ [ ALGORITHM ] ○ [ INPUT SIZE ] ○ [ OUTPUT SIZE ] ○ [ RATIO.% ] ○ [ ARCHIVED FILES ] ○ [ COMP.TIME ] ○ [ SYNTAX - OPTIONS - ARGUMENTS ] ○

        Arc+zstd          95,4°MB           26,2°MB       27,46 %              1°Files    00:00:44:940   a -ma9 -ds -lc1024 -ld1024 -ep1 -di -i2 -ed -r -s; -w"temp" -mzstd 
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-↓- [ CMD Bench.Test.Info v0.0.6c ] -↓- Compressed Archive Completed At -↓- 08/10/2016 13:56:59
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 ○ [ ALGORITHM ] ○ [ INPUT SIZE ] ○ [ OUTPUT SIZE ] ○ [ RATIO.% ] ○ [ ARCHIVED FILES ] ○ [ COMP.TIME ] ○ [ SYNTAX - OPTIONS - ARGUMENTS ] ○

Arc+zstd32_gcc620         95,4°MB           26,2°MB       27,46 %              1°Files    00:00:43:959   a -ma9 -ds -lc1024 -ld1024 -ep1 -di -i2 -ed -r -s; -w"temp" -mzstd 
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-↓- [ CMD Bench.Test.Info v0.0.6c ] -↓- Compressed Archive Completed At -↓- 08/10/2016 13:59:05
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 ○ [ ALGORITHM ] ○ [ INPUT SIZE ] ○ [ OUTPUT SIZE ] ○ [ RATIO.% ] ○ [ ARCHIVED FILES ] ○ [ COMP.TIME ] ○ [ SYNTAX - OPTIONS - ARGUMENTS ] ○

Arc+zstd64_gcc620         95,4°MB           26,2°MB       27,46 %              1°Files    00:00:43:956   a -ma9 -ds -lc1024 -ld1024 -ep1 -di -i2 -ed -r -s; -w"temp" -mzstd 
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-↓- [ CMD Bench.Test.Info v0.0.6c ] -↓- Compressed Archive Completed At -↓- 08/10/2016 14:09:55
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 ○ [ ALGORITHM ] ○ [ INPUT SIZE ] ○ [ OUTPUT SIZE ] ○ [ RATIO.% ] ○ [ ARCHIVED FILES ] ○ [ COMP.TIME ] ○ [ SYNTAX - OPTIONS - ARGUMENTS ] ○

Arc+pzstd_gcc620          95,4°MB           26,7°MB       27,99 %              1°Files    00:00:09:946   a -ma9 -ds -lc1024 -ld1024 -ep1 -di -i2 -ed -r -s; -w"temp" -mpzstd 
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All test ZSTD Same Options :

Level=19
ChunkSize=100M
Threads=2

Test PZSTD Options

pzstd -19 -f

felice, chunk size is set to 100m, input is less than 100m, obviously no comparison with pzstd here because cls-zstd was single threaded either way.

Chunk size works this way.

It feeds a specified chunk size to a thread.
If you have 4 threads for example, you set 100m chunk size on a 360mb input.
thread 1-3 will get 100mb
thread 4 will get 60mb
for your case, it really doesn't matter how many threads you set, compression will always be single threaded because chunk size is bigger than main input, all this just goes to 1 thread, all other threads have nothing to process.