the thing is ZSTD use only one core so FastBackup always would be more faster because use all the cores. so in this case of speed compression, i choose speed instead compression ratio. Fastbackup have perfect balance in Speed/Compession.
FastBackup
Code:
FreeArc 0.67 (September 13 2014) creating archive: srep_fbm4.arc
Compressing 2,209 files, 2,434,938,849 bytes. Processed
Compressed 2,209 files, 2,434,938,849 => 712,621,630 bytes. Ratio 29.27%
Compression time: cpu 27.50 sec/real 697.49 sec = 4%. Speed 3.49 mB/s
All OK
Compressing 2,434,938,849 bytes with srep -m3f -d1g -a2 $$arcdatafile$$.tmp $$arcpackedfile$$.tmp
Errorlevel=0
Compressing 1,726,505,451 bytes with fb009.exe a $$arcpackedfile$$.tmp $$arcdatafile$$.tmp -i2 -m4
Errorlevel=0
Timer 3.01 Copyright (c) 2002-2003 Igor Pavlov 2003-07-10
Kernel Time = 30.794 = 00:00:30.794 = 4%
User Time = 27.986 = 00:00:27.986 = 4%
Process Time = 58.781 = 00:00:58.781 = 8%
Global Time = 699.555 = 00:11:39.555 = 100%
ZSTD 5.1
Code:
FreeArc 0.67 (September 13 2014) creating archive: zstd.arc
Compressing 2,209 files, 2,434,938,849 bytes. Processed
Compressed 2,209 files, 2,434,938,849 => 777,677,800 bytes. Ratio 31.94%
Compression time: cpu 62.46 sec/real 1833.23 sec = 3%. Speed 1.33 mB/s
All OK
Compressing 2,434,938,849 bytes with srep -m3f -d1g -a2 $$arcdatafile$$.tmp $$arcpackedfile$$.tmp
Errorlevel=0
Compressing 1,726,505,451 bytes with zstd -f -21 $$arcdatafile$$.tmp $$arcpackedfile$$.tmp
Errorlevel=0
Timer 3.01 Copyright (c) 2002-2003 Igor Pavlov 2003-07-10
Kernel Time = 30.435 = 00:00:30.435 = 1%
User Time = 62.790 = 00:01:02.790 = 3%
Process Time = 93.226 = 00:01:33.226 = 5%
Global Time = 1834.073 = 00:30:34.073 = 100%