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悠尚数据是国人VPS服务商，采用Xen架构，新增数据中心洛杉矶webnx（国内速度优秀），终生6折优惠码：vpsmmlos购买linux256方案仅 ￥58元/月（购买链接）配置如下：

• 256MB guaranteed memory
• 10GB storage on Raid10
• 300GB/month data transfer on 50Mbps
• Xen/XenSystem

延伸阅读《悠尚数据 - 59元 XEN 512M 10G 500G 凤凰城》

测试IP：173.231.48.176 - 100mb - php探针 - info探针

free -m
             total       used       free     shared    buffers     cached
Mem:           256        232         23          0         29        149
-/+ buffers/cache:         53        202
Swap:          255          0        255

cat /proc/cpuinfo
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 42
model name	: Intel(R) Xeon(R) CPU E31230 @ 3.20GHz
stepping	: 7
cpu MHz		: 3192.746
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 nonstop_tsc pni ssse3 sse4_1 sse4_2 popcnt [8]
bogomips	: 7984.30

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 42
model name	: Intel(R) Xeon(R) CPU E31230 @ 3.20GHz
stepping	: 7
cpu MHz		: 3192.746
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 up nonstop_tsc pni ssse3 sse4_1 sse4_2 popcnt [8]
bogomips	: 7984.30

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 42
model name	: Intel(R) Xeon(R) CPU E31230 @ 3.20GHz
stepping	: 7
cpu MHz		: 3192.746
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 up nonstop_tsc pni ssse3 sse4_1 sse4_2 popcnt [8]
bogomips	: 7984.30

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 42
model name	: Intel(R) Xeon(R) CPU E31230 @ 3.20GHz
stepping	: 7
cpu MHz		: 3192.746
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 up nonstop_tsc pni ssse3 sse4_1 sse4_2 popcnt [8]
bogomips	: 7984.30

[root@MyVPS ~]# 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, 5.78906 seconds, 46.4 MB/s
[root@MyVPS ~]# 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, 5.34013 seconds, 50.3 MB/s
[root@MyVPS ~]# 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, 6.17193 seconds, 43.5 MB/s

wget http://cachefly.cachefly.net/100mb.test
--2012-02-29 12:56:41--  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) [application/octet-stream]
Saving to: `100mb.test'
100%[=============================>] 104,857,600 11.2M/s   in 9.2s   
2012-02-29 12:56:50 (10.9 MB/s) - `100mb.test' saved [104857600/104857600]

Benchmark Run: Wed Feb 29 2012 12:59:33 - 13:27:46
4 CPUs in system; running 1 parallel copy of tests

Dhrystone 2 using register variables       16053767.8 lps   (10.0 s, 7 samples)
Double-Precision Whetstone                     2777.1 MWIPS (10.0 s, 7 samples)
Execl Throughput                               1995.2 lps   (30.0 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks        568481.0 KBps  (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks          151063.7 KBps  (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks       1686651.9 KBps  (30.0 s, 2 samples)
Pipe Throughput                              826879.4 lps   (10.0 s, 7 samples)
Pipe-based Context Switching                 131052.7 lps   (10.0 s, 7 samples)
Process Creation                               5700.7 lps   (30.0 s, 2 samples)
Shell Scripts (1 concurrent)                   5763.8 lpm   (60.0 s, 2 samples)
Shell Scripts (8 concurrent)                   1608.5 lpm   (60.0 s, 2 samples)
System Call Overhead                         586646.8 lps   (10.0 s, 7 samples)

System Benchmarks Index Values               BASELINE       RESULT    INDEX
Dhrystone 2 using register variables         116700.0   16053767.8   1375.6
Double-Precision Whetstone                       55.0       2777.1    504.9
Execl Throughput                                 43.0       1995.2    464.0
File Copy 1024 bufsize 2000 maxblocks          3960.0     568481.0   1435.6
File Copy 256 bufsize 500 maxblocks            1655.0     151063.7    912.8
File Copy 4096 bufsize 8000 maxblocks          5800.0    1686651.9   2908.0
Pipe Throughput                               12440.0     826879.4    664.7
Pipe-based Context Switching                   4000.0     131052.7    327.6
Process Creation                                126.0       5700.7    452.4
Shell Scripts (1 concurrent)                     42.4       5763.8   1359.4
Shell Scripts (8 concurrent)                      6.0       1608.5   2680.9
System Call Overhead                          15000.0     586646.8    391.1
                                                                   ========
System Benchmarks Index Score                                         863.8

------------------------------------------------------------------------
Benchmark Run: Wed Feb 29 2012 13:27:46 - 13:56:02
4 CPUs in system; running 4 parallel copies of tests

Dhrystone 2 using register variables       56728590.7 lps   (10.0 s, 7 samples)
Double-Precision Whetstone                    10412.4 MWIPS (9.9 s, 7 samples)
Execl Throughput                               9929.3 lps   (30.0 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks        358926.9 KBps  (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks           99376.9 KBps  (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks       1522969.3 KBps  (30.0 s, 2 samples)
Pipe Throughput                             2822443.6 lps   (10.0 s, 7 samples)
Pipe-based Context Switching                 469602.4 lps   (10.0 s, 7 samples)
Process Creation                              18918.4 lps   (30.0 s, 2 samples)
Shell Scripts (1 concurrent)                  13821.2 lpm   (60.0 s, 2 samples)
Shell Scripts (8 concurrent)                   2245.7 lpm   (60.0 s, 2 samples)
System Call Overhead                        2058293.6 lps   (10.0 s, 7 samples)

System Benchmarks Index Values               BASELINE       RESULT    INDEX
Dhrystone 2 using register variables         116700.0   56728590.7   4861.1
Double-Precision Whetstone                       55.0      10412.4   1893.2
Execl Throughput                                 43.0       9929.3   2309.1
File Copy 1024 bufsize 2000 maxblocks          3960.0     358926.9    906.4
File Copy 256 bufsize 500 maxblocks            1655.0      99376.9    600.5
File Copy 4096 bufsize 8000 maxblocks          5800.0    1522969.3   2625.8
Pipe Throughput                               12440.0    2822443.6   2268.8
Pipe-based Context Switching                   4000.0     469602.4   1174.0
Process Creation                                126.0      18918.4   1501.5
Shell Scripts (1 concurrent)                     42.4      13821.2   3259.7
Shell Scripts (8 concurrent)                      6.0       2245.7   3742.8
System Call Overhead                          15000.0    2058293.6   1372.2
                                                                   ========
System Benchmarks Index Score                                        1886.6

测试IP：173.231.48.176 - 100mb - php探针 - info探针