主机测评前天买了一款crowncloud的VPS【crowncloud-2g内存KVM/8核/30g硬盘/3T流量/月付7美元】，简单的做个测评，希望对打算购买的朋友做个指导。具体服务器在洛杉矶的webnx机房，每个VPS都是百兆共享， CPU型号 [8核] QEMU Virtual CPU version (cpu64-rhel6) | 频率:2400.084 | 二级缓存:4096 KB | Bogomips:4800.16 ×8。

root@fuck:~# wget http://cachefly.cachefly.net/100mb.test
--2013-08-14 23:04:00-- http://cachefly.cachefly.net/100mb.test
Resolving cachefly.cachefly.net (cachefly.cachefly.net)... 205.234.175.175
Connecting to cachefly.cachefly.net (cachefly.cachefly.net)|205.234.175.175|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 104857600 (100M) [application/octet-stream]
Saving to: `100mb.test'

100%[=============================================>] 104,857,600 11.0M/s in 9.2s

2013-08-14 23:04:10 (10.9 MB/s) - `100mb.test' saved [104857600/104857600]

root@fuck:~# dd if=/dev/zero of=test bs=64k count=16k oflag=dsync
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB) copied, 32.9332 s, 32.6 MB/s

BYTE UNIX Benchmarks (Version 5.1.2)

System: fuck: GNU/Linux
OS: GNU/Linux -- 3.2.0-4-686-pae -- #1 SMP Debian 3.2.46-1
Machine: i686 (unknown)
Language: en_US.utf8 (charmap="UTF-8", collate="UTF-8")
CPU 0: QEMU Virtual CPU version (cpu64-rhel6) (4800.2 bogomips)
Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSCALL/SYSRET
CPU 1: QEMU Virtual CPU version (cpu64-rhel6) (4800.2 bogomips)
Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSCALL/SYSRET
CPU 2: QEMU Virtual CPU version (cpu64-rhel6) (4800.2 bogomips)
Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSCALL/SYSRET
CPU 3: QEMU Virtual CPU version (cpu64-rhel6) (4800.2 bogomips)
Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSCALL/SYSRET
CPU 4: QEMU Virtual CPU version (cpu64-rhel6) (4800.2 bogomips)
Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSCALL/SYSRET
CPU 5: QEMU Virtual CPU version (cpu64-rhel6) (4800.2 bogomips)
Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSCALL/SYSRET
CPU 6: QEMU Virtual CPU version (cpu64-rhel6) (4800.2 bogomips)
Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSCALL/SYSRET
CPU 7: QEMU Virtual CPU version (cpu64-rhel6) (4800.2 bogomips)
Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSCALL/SYSRET
23:05:27 up 1:39, 1 user, load average: 0.43, 0.18, 0.10; runlevel 2

------------------------------------------------------------------------
Benchmark Run: Wed Aug 14 2013 23:05:27 - 23:33:42
8 CPUs in system; running 1 parallel copy of tests

Dhrystone 2 using register variables 13862042.6 lps (10.0 s, 7 samples)
Double-Precision Whetstone 2770.1 MWIPS (10.1 s, 7 samples)
Execl Throughput 2138.3 lps (29.7 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 531514.2 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 141339.0 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 1265830.1 KBps (30.0 s, 2 samples)
Pipe Throughput 860882.5 lps (10.0 s, 7 samples)
Pipe-based Context Switching 203167.8 lps (10.0 s, 7 samples)
Process Creation 4098.1 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 4560.4 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 2932.1 lpm (60.0 s, 2 samples)
System Call Overhead 1049410.8 lps (10.0 s, 7 samples)

System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 13862042.6 1187.8
Double-Precision Whetstone 55.0 2770.1 503.7
Execl Throughput 43.0 2138.3 497.3
File Copy 1024 bufsize 2000 maxblocks 3960.0 531514.2 1342.2
File Copy 256 bufsize 500 maxblocks 1655.0 141339.0 854.0
File Copy 4096 bufsize 8000 maxblocks 5800.0 1265830.1 2182.5
Pipe Throughput 12440.0 860882.5 692.0
Pipe-based Context Switching 4000.0 203167.8 507.9
Process Creation 126.0 4098.1 325.2
Shell Scripts (1 concurrent) 42.4 4560.4 1075.6
Shell Scripts (8 concurrent) 6.0 2932.1 4886.9
System Call Overhead 15000.0 1049410.8 699.6
========
System Benchmarks Index Score 907.7

------------------------------------------------------------------------
Benchmark Run: Wed Aug 14 2013 23:33:42 - 00:02:04
8 CPUs in system; running 8 parallel copies of tests

Dhrystone 2 using register variables 96002139.2 lps (10.0 s, 7 samples)
Double-Precision Whetstone 20987.3 MWIPS (10.0 s, 7 samples)
Execl Throughput 18136.0 lps (30.0 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 363278.2 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 96533.6 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 1089238.2 KBps (30.0 s, 2 samples)
Pipe Throughput 6186359.5 lps (10.0 s, 7 samples)
Pipe-based Context Switching 1144881.5 lps (10.0 s, 7 samples)
Process Creation 37026.3 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 33133.8 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 4888.4 lpm (60.1 s, 2 samples)
System Call Overhead 5450425.7 lps (10.0 s, 7 samples)

System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 96002139.2 8226.4
Double-Precision Whetstone 55.0 20987.3 3815.9
Execl Throughput 43.0 18136.0 4217.7
File Copy 1024 bufsize 2000 maxblocks 3960.0 363278.2 917.4
File Copy 256 bufsize 500 maxblocks 1655.0 96533.6 583.3
File Copy 4096 bufsize 8000 maxblocks 5800.0 1089238.2 1878.0
Pipe Throughput 12440.0 6186359.5 4973.0
Pipe-based Context Switching 4000.0 1144881.5 2862.2
Process Creation 126.0 37026.3 2938.6
Shell Scripts (1 concurrent) 42.4 33133.8 7814.6
Shell Scripts (8 concurrent) 6.0 4888.4 8147.3
System Call Overhead 15000.0 5450425.7 3633.6
========
System Benchmarks Index Score 3229.6