7-zip benchmark on ZenFone 2 (4G/64G) with chroot

7zb

cs8425@localhost:~$ 7z b

7-Zip [64] 9.20  Copyright (c) 1999-2010 Igor Pavlov  2010-11-18
p7zip Version 9.20 (locale=en_US.UTF-8,Utf16=on,HugeFiles=on,4 CPUs)

RAM size:    3907 MB,  # CPU hardware threads:   4
RAM usage:    850 MB,  # Benchmark threads:      4

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

22:    3798   317   1164   3694  |    81724   397   1856   7373
23:    3717   325   1166   3787  |    68856   348   1811   6301
24:    3681   355   1116   3958  |    46298   377   1140   4295
25:    2913   337    986   3326  |    46016   377   1148   4327
----------------------------------------------------------------
Avr:          333   1108   3691               375   1489   5574
Tot:          354   1298   4633

cpuinfo

cs8425@localhost:~$ cat /proc/cpuinfo 
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 90
model name	: Intel(R) Atom(TM) CPU  Z3580  @ 1.33GHz
stepping	: 0
microcode	: 0x34
cpu MHz		: 500.000
cache size	: 1024 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes rdrand lahf_lm 3dnowprefetch ida arat epb dtherm tpr_shadow vnmi flexpriority ept vpid tsc_adjust smep erms
bogomips	: 2662.40
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management: