# time /bin/true

real    0m0.031s
user    0m0.000s
sys     0m0.028s
# time qemu-x86_64-static true

real    0m0.114s
user    0m0.056s
sys     0m0.052s



# 7zr b

7-Zip (a) [64] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21
p7zip Version 16.02 (locale=C,Utf16=off,HugeFiles=on,64 bits,4 CPUs LE)

LE
CPU Freq: - - - - 128000000 - 512000000 - -

RAM size:   16024 MB,  # CPU hardware threads:   4
RAM usage:    882 MB,  # Benchmark threads:      4

                       Compressing  |                  Decompressing
Dict     Speed Usage    R/U Rating  |      Speed Usage    R/U Rating
         KiB/s     %   MIPS   MIPS  |      KiB/s     %   MIPS   MIPS

22:       5436   301   1755   5289  |      97337   391   2122   8304
23:       5398   303   1816   5500  |      97765   399   2122   8459
24:       5496   317   1863   5909  |      95842   398   2112   8414
25:       5449   316   1971   6222  |      94282   397   2112   8391
----------------------------------  | ------------------------------
Avr:             309   1851   5730  |              396   2117   8392
Tot:             353   1984   7061

# qemu-x86_64-static 7z b

7-Zip [64] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21
p7zip Version 16.02 (locale=C,Utf16=off,HugeFiles=on,64 bits,4 CPUs QEMU Virtual CPU version 2.5+ (663),ASM)

QEMU Virtual CPU version 2.5+ (663)
CPU Freq: 703296 64000000 64000000 64000000 128000000 256000000 - 1024000000 2048000000

RAM size:   16024 MB,  # CPU hardware threads:   4
RAM usage:    882 MB,  # Benchmark threads:      4

                       Compressing  |                  Decompressing
Dict     Speed Usage    R/U Rating  |      Speed Usage    R/U Rating
         KiB/s     %   MIPS   MIPS  |      KiB/s     %   MIPS   MIPS

22:        634   277    223    617  |      16525   398    354   1410
23:        633   277    233    646  |      16283   394    357   1409
24:        639   279    246    687  |      16197   395    360   1422
25:        638   280    261    729  |      16103   395    363   1433
----------------------------------  | ------------------------------
Avr:             278    241    670  |              396    358   1418
Tot:             337    300   1044


# time sha1sum zero
2a492f15396a6768bcbca016993f4b4c8b0b5307  zero

real    0m4.826s
user    0m4.520s
sys     0m0.276s

# time qemu-x86_64-static sha1sum zero
2a492f15396a6768bcbca016993f4b4c8b0b5307  zero

real    0m25.971s
user    0m25.232s
sys     0m0.624s



# time xzcat linux-5.9.11.tar.xz >/dev/null 

real    0m12.793s
user    0m12.504s
sys     0m0.200s

# time qemu-x86_64-static xzcat linux-5.9.11.tar.xz >/dev/null

real    0m43.766s
user    0m43.108s
sys     0m0.276s