构架 xen
cpu Intel(R) Xeon(R) CPU E7- 4830 @ 2.13GHz 单核
mem 1.5G
disk 100G
os CentOS release 5.4
机房 四川电信
入口带宽 5.07 MB/s左右
出口带宽 2.70 MB/s左右
编译lnmp 27分钟
dd if=/dev/zero of=test bs=128k count=10k conv=fdatasync
154 MB/s
147 MB/s
174 MB/s
价格 https://service.ctyun.cn/cloudportal/doc/priceVmCloud.html
这只是测试账号只开了ssh端口，其他的需要备案才给开。
hostitek台湾的vps，SSD硬盘出问题，商家已换新的硬盘，我的数据估计全丢了，还好自己有备份。以前有人说过hostitek的vps丢过数据，我只喜欢他们的网速特好，主机性能也很好，想不到悲剧发生了，他们也没有备份，如果他们有备份，不超售，那就是非常好的vps。如果openVZ的VPS不超售，性能肯定比XEN的强。为什么linux主机的硬盘这么容易坏呢？？？
博客只好搬到diahosting的美国主机，diahosting很久以前用过，硅谷机房延迟低，网速不错，且RAID10。
wordprees的优化有两篇文章非常好，本人就在用。
凌云1型云主机配置详情
操作系统: Windows2003 / CentOS 5.6 / Ubuntu12.4
CPU: Intel XEON E5620 2.40GHz 四核至强 x 四核
内存配额: 2GB DDRIII
硬盘容量: 160G SAS（系统盘15G） + 160G SATA 备份
独立IP地址: 1个(可增值)
带宽: 5MB独享（BGP多线 千兆光纤）
[root@localhost ~]# cat /proc/cpuinfo
Intel(R) Xeon(R) CPU E5620 @ 2.40GHz
bogomips : 4800.17
分配四核
[root@localhost ~]# free -m
Mem: 2010 762 1247 0 172 464
Swap: 3039 0 3039
[root@localhost ~]# dd if=/dev/zero of=test bs=64k count=4k oflag=dsync
268435456 bytes (268 MB) copied, 6.08845 seconds, 44.1 MB/s
268435456 bytes (268 MB) copied, 5.01624 seconds, 53.5 MB/s
268435456 bytes (268 MB) copied, 8.13692 seconds, 33.0 MB/s
三次结果
[root@localhost ~]# wget http://cachefly.cachefly.net/100mb.test
2012-07-12 15:44:25 (5.55 MB/s) - `100mb.test' saved [104857600/104857600]
下载没有限死5M
安装lnmp
real 43m38.374s
user 30m43.729s
sys 5m5.279s
==============================================================
BYTE UNIX Benchmarks (Version 4.1-wht.2)
System -- Linux localhost.localdomain 2.6.18-238.el5 #1 SMP Thu Jan 13 15:51:15 EST 2011 x86_64 x86_64 x86_64 GNU/Linux
17171932 4009788 12275772 25% /
Start Benchmark Run: Thu Jul 12 21:55:32 CST 2012
21:55:32 up 12 min, 1 user, load average: 0.00, 0.12, 0.19
End Benchmark Run: Thu Jul 12 22:06:01 CST 2012
22:06:01 up 22 min, 1 user, load average: 16.32, 6.74, 3.02
INDEX VALUES
TEST BASELINE RESULT INDEX
Dhrystone 2 using register variables 376783.7 9483854.6 251.7
Double-Precision Whetstone 83.1 984.6 118.5
Execl Throughput 188.3 4854.7 257.8
File Copy 1024 bufsize 2000 maxblocks 2672.0 128499.0 480.9
File Copy 256 bufsize 500 maxblocks 1077.0 37479.0 348.0
File Read 4096 bufsize 8000 maxblocks 15382.0 803257.0 522.2
Pipe-based Context Switching 15448.6 398829.5 258.2
Pipe Throughput 111814.6 1579872.6 141.3
Process Creation 569.3 15029.2 264.0
Shell Scripts (8 concurrent) 44.8 1023.7 228.5
System Call Overhead 114433.5 1387549.9 121.3
=========
FINAL SCORE 243.6
华北节点其实就是北京的BGP五线（电信、联通、铁通、移动、教育网）机房。试用的是 小型主机 CPU独享型 计算能力: 4 ECU 单核: 4 ECU/核 内存: 2G 硬盘: 30G 带宽5M。
[root@SNDA-172-17-10-133 ~]# 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, 3.35783 s, 79.9 MB/s
[root@SNDA-172-17-10-133 ~]# 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, 3.36813 s, 79.7 MB/s
上传下载限死5M
2012-06-08 19:01:05 (574 KB/s) - ?.00mb.test?.saved [104857600/104857600]
Intel(R) Xeon(R) CPU E5645 @ 2.40GHz
安装LNMP 50分钟
ping
http://www.17ce.com/site/ping/25bd22c594d36f1bd2d91d36cb173907.html
Get
http://www.17ce.com/site/http/5397b3ed72556375f6b30439c69bec47.html
YUNVM VPS的提供试用一天。我选的是VM2048 2G内存 双核 80G 3M 上海电信。个人估计是KVM技术的。
[root@localhost ~]# 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, 12.8157 s, 20.9 MB/s
[root@localhost ~]# 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, 12.6073 s, 21.3 MB/s
上传下载都限制在3M左右
[root@localhost ~]# wget http://cachefly.cachefly.net/100mb.test
--2012-06-07 23:47:16-- http://cachefly.cachefly.net/100mb.test
Resolving cachefly.cachefly.net... 204.93.150.150
Connecting to cachefly.cachefly.net|204.93.150.150|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 104857600 (100M) [application/octet-stream]
Saving to: ?.00mb.test?
100%[====================================================================================================================>] 104,857,600 361K/s in 4m 46s
2012-06-07 23:52:02 (359 KB/s) - ?.00mb.test?.saved [104857600/104857600]
BYTE UNIX Benchmarks (Version 4.1-wht.2)的跑分
INDEX VALUES
TEST BASELINE RESULT INDEX
Dhrystone 2 using register variables 376783.7 16810439.2 446.2
Double-Precision Whetstone 83.1 1881.7 226.4
Execl Throughput 188.3 5729.0 304.2
File Copy 1024 bufsize 2000 maxblocks 2672.0 245679.0 919.5
File Copy 256 bufsize 500 maxblocks 1077.0 77435.0 719.0
File Read 4096 bufsize 8000 maxblocks 15382.0 1914439.0 1244.6
Pipe-based Context Switching 15448.6 402481.2 260.5
Pipe Throughput 111814.6 2609051.3 233.3
Process Creation 569.3 14290.3 251.0
Shell Scripts (8 concurrent) 44.8 801.7 179.0
System Call Overhead 114433.5 3145555.2 274.9
=========
FINAL SCORE 372.2
cpu
model name : Intel(R) Xeon(R) CPU E5649 @ 2.53GHz