KVMLA凤凰城IOF机房1G Xen VPS测评
KVMLA是一家国人开办的vps主售美国vps，最新上线凤凰城IOF机房，给到2款特价VPS，512M Xen VPS只需49元，1G Xen VPS只需98元。手上拿到1G这款，分享下这款VPS的一些测试数据，仅供大家参考，总体来看性能非常给力，值得购买。1、安装lnmp只花了19分钟，以下是安装lnmp后的内存情况。
# free -m
total used free shared buffers cached
Mem: 1024 111 912 0 3 41
-/+ buffers/cache: 66 957
Swap: 511 0 511
2、网络带宽测试：(速度很不错，G口的带宽)
命令：wget http://cachefly.cachefly.net/100mb.test
# wget http://cachefly.cachefly.net/100mb.test
--2013-05-27 18:15:36--http://cachefly.cachefly.net/100mb.test
Resolving cachefly.cachefly.net... 205.234.175.175
Connecting to cachefly.cachefly.net|205.234.175.175|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 104857600 (100M)
Saving to: `100mb.test'
100%[======================================>] 104,857,600 21.3M/s in 5.0s
3、硬盘IO测试（测试3次，结果都很给力。）
命令：dd if=/dev/zero of=test bs=64k count=4k oflag=dsync
# dd if=/dev/zero of=test bs=64k count=4k oflag=dsync
4096+0 records in
4096+0 records out
268435456 bytes (268 MB) copied, 3.10333 seconds, 86.5 MB/s
# dd if=/dev/zero of=test bs=64k count=4k oflag=dsync
4096+0 records in
4096+0 records out
268435456 bytes (268 MB) copied, 3.1448 seconds, 85.4 MB/s
# dd if=/dev/zero of=test bs=64k count=4k oflag=dsync
4096+0 records in
4096+0 records out
268435456 bytes (268 MB) copied, 3.27616 seconds, 81.9 MB/s
4、CPU信息（这款1G内存给到了4核心，cpu是E3-1240）
命令：cat /proc/cpuinfo
# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Xeon(R) CPU E3-1240 V2 @ 3.40GHz
stepping : 9
cpu MHz : 3400.054
cache size : 8192 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu de tsc msr pae cx8 apic cmov pat clflush acpi mmx fxsr sse
sse2 ss ht nx constant_tsc ida arat pni ssse3 sse4_1 sse4_2 popcnt
bogomips : 8547.52
5、unixbench综合测试：（分数高达1261.5）
总分情况，低于400的就算性能低下；600-800是属于正常VPS水准；超过1000分性能就算给力。
命令：wget http://www.CTOHome.com/linux-vps-pack/unixbench.sh;sh ./unixbench.sh;
4 CPUs in system; running 4 parallel copies of tests
Dhrystone 2 using register variables 70376929.2 lps (10.1 s, 7 samp
Double-Precision Whetstone 12489.7 MWIPS (10.0 s, 7 samp
Execl Throughput 9961.3 lps (30.0 s, 2 samp
File Copy 1024 bufsize 2000 maxblocks 92378.5 KBps(30.0 s, 2 samp
File Copy 256 bufsize 500 maxblocks 23122.1 KBps(30.0 s, 2 samp
File Copy 4096 bufsize 8000 maxblocks 333241.4 KBps(30.0 s, 2 samp
Pipe Throughput 1093549.5 lps (10.0 s, 7 samp
Pipe-based Context Switching 330081.5 lps (10.0 s, 7 samp
Process Creation 19108.1 lps (30.1 s, 2 samp
Shell Scripts (1 concurrent) 14558.4 lpm (60.0 s, 2 samp
Shell Scripts (8 concurrent) 2410.1 lpm (60.1 s, 2 samp
System Call Overhead 2701794.8 lps (10.1 s, 7 samp
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 70376929.2 6030.6
Double-Precision Whetstone 55.0 12489.7 2270.9
Execl Throughput 43.0 9961.3 2316.6
File Copy 1024 bufsize 2000 maxblocks 3960.0 92378.5 233.3
File Copy 256 bufsize 500 maxblocks 1655.0 23122.1 139.7
File Copy 4096 bufsize 8000 maxblocks 5800.0 333241.4 574.6
Pipe Throughput 12440.0 1093549.5 879.1
Pipe-based Context Switching 4000.0 330081.5 825.2
Process Creation 126.0 19108.1 1516.5
Shell Scripts (1 concurrent) 42.4 14558.4 3433.6
Shell Scripts (8 concurrent) 6.0 2410.1 4016.8
System Call Overhead 15000.0 2701794.8 1801.2
========
System Benchmarks Index Score 1261.5
6、测试速度，chinaz Ping检测的速度还是不错的！
测试ip：192.30.137.163
出处：优优VPS
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