昨天prometeus发布其新品牌XenPower，今天本人为大家送上简单的测评。先说下我的个人感受：意大利嘛，速度有点慢，不太适合针对国内用户；基于XEN PV，1G内内存，120G硬盘，2T流量起步，月付5.7刀，性价比非常高，几乎目前还找不到超过的；从I/O性能来看着实不错...要尼玛在美国的话那就无敌了，期待prometeus早点上美国数据中心的iwstack！

root@gongyi:~# free -m
total used free shared buffers cached
Mem: 1007 187 819 0 20 144
-/+ buffers/cache: 23 984
Swap: 511 0 511

top - 23:30:52 up 8:21, 1 user, load average: 0.00, 0.01, 0.05
Tasks: 53 total, 1 running, 52 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 0.2 sy, 0.0 ni, 99.8 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 1031640 total, 192724 used, 838916 free, 20728 buffers
KiB Swap: 524284 total, 0 used, 524284 free, 148020 cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1 root 20 0 2288 736 628 S 0.0 0.1 0:02.00 init
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root 20 0 0 0 0 S 0.0 0.0 0:00.10 ksoftirqd/0
4 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0
5 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kworker/u:0
6 root rt 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
7 root rt 0 0 0 0 S 0.0 0.0 0:00.24 watchdog/0
8 root rt 0 0 0 0 S 0.0 0.0 0:00.00 migration/1
9 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kworker/1:0
10 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/1
11 root rt 0 0 0 0 S 0.0 0.0 0:00.20 watchdog/1
12 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 cpuset
13 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 khelper
14 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kdevtmpfs
15 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 netns
16 root 20 0 0 0 0 S 0.0 0.0 0:00.00 xenwatch
17 root 20 0 0 0 0 S 0.0 0.0 0:00.00 xenbus
18 root 20 0 0 0 0 S 0.0 0.0 0:00.12 sync_supers
19 root 20 0 0 0 0 S 0.0 0.0 0:00.00 bdi-default
20 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kintegrityd
21 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kblockd
22 root 20 0 0 0 0 S 0.0 0.0 0:01.04 kworker/0:1
23 root 20 0 0 0 0 S 0.0 0.0 0:01.29 kworker/1:1
24 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khungtaskd
25 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kswapd0
26 root 25 5 0 0 0 S 0.0 0.0 0:00.00 ksmd
27 root 20 0 0 0 0 S 0.0 0.0 0:00.00 fsnotify_mark
28 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 crypto
32 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khvcd
88 root 20 0 0 0 0 S 0.0 0.0 0:00.06 kjournald
97 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kworker/u:1
231 root 20 0 2604 1084 764 S 0.0 0.1 0:00.03 udevd
286 root 20 0 2600 776 456 S 0.0 0.1 0:00.00 udevd
287 root 20 0 2600 776 456 S 0.0 0.1 0:00.00 udevd

大母鸡的U啊，忒不喜欢：Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz

root@gongyi:~# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz
stepping : 4
microcode : 0x415
cpu MHz : 2099.998
cache size : 15360 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 39
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 sep cmov pat clflush mmx fxsr sse sse2 ss ht nx constant_tsc nonstop_tsc pni pclmulqdq ssse3 pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes avx f16c rdrand hypervisor
bogomips : 4199.99
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz
stepping : 4
microcode : 0x415
cpu MHz : 2099.998
cache size : 15360 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 39
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 sep cmov pat clflush mmx fxsr sse sse2 ss ht nx constant_tsc nonstop_tsc pni pclmulqdq ssse3 pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes avx f16c rdrand hypervisor
bogomips : 4199.99
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

root@gongyi:~# df -lh
Filesystem Size Used Avail Use% Mounted on
rootfs 119G 978M 112G 1% /
udev 10M 0 10M 0% /dev
tmpfs 101M 80K 101M 1% /run
/dev/xvda1 119G 978M 112G 1% /
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 304M 0 304M 0% /run/shm

本人下载cachefly和linode的几个数据中心的文件来测试一下带宽问题：

root@gongyi:~# wget http://cachefly.cachefly.net/100mb.test
--2013-12-24 23:32:12-- http://cachefly.cachefly.net/100mb.test
Resolving cachefly.cachefly.net (cachefly.cachefly.net)... 158.58.172.129
Connecting to cachefly.cachefly.net (cachefly.cachefly.net)|158.58.172.129|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 104857600 (100M) [application/octet-stream]
Saving to: `100mb.test'

100%[=========================================>] 104,857,600 47.9M/s in 2.1s

2013-12-24 23:32:14 (47.9 MB/s) - `100mb.test' saved [104857600/104857600]

root@gongyi:~# wget http://speedtest.london.linode.com/100MB-london.bin
--2013-12-24 23:32:26-- http://speedtest.london.linode.com/100MB-london.bin
Resolving speedtest.london.linode.com (speedtest.london.linode.com)... 2a01:7e00::4b, 176.58.107.39
Connecting to speedtest.london.linode.com (speedtest.london.linode.com)|2a01:7e00::4b|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 104857600 (100M) [application/octet-stream]
Saving to: `100MB-london.bin'

100%[=========================================>] 104,857,600 11.2M/s in 9.2s

2013-12-24 23:32:36 (10.9 MB/s) - `100MB-london.bin' saved [104857600/104857600]

root@gongyi:~# wget http://speedtest.tokyo.linode.com/100MB-tokyo.bin
--2013-12-24 23:33:01-- http://speedtest.tokyo.linode.com/100MB-tokyo.bin
Resolving speedtest.tokyo.linode.com (speedtest.tokyo.linode.com)... 2400:8900::4b, 106.187.96.148
Connecting to speedtest.tokyo.linode.com (speedtest.tokyo.linode.com)|2400:8900::4b|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 104857600 (100M) [application/octet-stream]
Saving to: `100MB-tokyo.bin'

100%[=========================================>] 104,857,600 256K/s in 7m 32s

2013-12-24 23:40:33 (227 KB/s) - `100MB-tokyo.bin' saved [104857600/104857600]

root@gongyi:~# wget http://speedtest.newark.linode.com/100MB-newark.bin
--2013-12-24 23:41:15-- http://speedtest.newark.linode.com/100MB-newark.bin
Resolving speedtest.newark.linode.com (speedtest.newark.linode.com)... 2600:3c03::4b, 50.116.57.237
Connecting to speedtest.newark.linode.com (speedtest.newark.linode.com)|2600:3c03::4b|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 104857600 (100M) [application/octet-stream]
Saving to: `100MB-newark.bin'

100%[=========================================>] 104,857,600 605K/s in 2m 30s

2013-12-24 23:43:45 (681 KB/s) - `100MB-newark.bin' saved [104857600/104857600]

root@gongyi:~# wget http://speedtest.atlanta.linode.com/100MB-atlanta.bin
--2013-12-24 23:44:06-- http://speedtest.atlanta.linode.com/100MB-atlanta.bin
Resolving speedtest.atlanta.linode.com (speedtest.atlanta.linode.com)... 2600:3c02::4b, 50.116.39.117
Connecting to speedtest.atlanta.linode.com (speedtest.atlanta.linode.com)|2600:3c02::4b|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 104857600 (100M) [application/octet-stream]
Saving to: `100MB-atlanta.bin'

100%[=========================================>] 104,857,600 2.74M/s in 38s

2013-12-24 23:44:44 (2.65 MB/s) - `100MB-atlanta.bin' saved [104857600/104857600]

root@gongyi:~# wget http://speedtest.dallas.linode.com/100MB-dallas.bin
--2013-12-24 23:45:02-- http://speedtest.dallas.linode.com/100MB-dallas.bin
Resolving speedtest.dallas.linode.com (speedtest.dallas.linode.com)... 2600:3c00::4b, 50.116.25.154
Connecting to speedtest.dallas.linode.com (speedtest.dallas.linode.com)|2600:3c00::4b|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 104857600 (100M) [application/octet-stream]
Saving to: `100MB-dallas.bin'

100%[=========================================>] 104,857,600 2.41M/s in 43s

2013-12-24 23:45:45 (2.34 MB/s) - `100MB-dallas.bin' saved [104857600/104857600]

root@gongyi:~# wget http://speedtest.fremont.linode.com/100MB-fremont.bin
--2013-12-24 23:46:35-- http://speedtest.fremont.linode.com/100MB-fremont.bin
Resolving speedtest.fremont.linode.com (speedtest.fremont.linode.com)... 2600:3c01::4b, 50.116.14.9
Connecting to speedtest.fremont.linode.com (speedtest.fremont.linode.com)|2600:3c01::4b|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 104857600 (100M) [application/octet-stream]
Saving to: `100MB-fremont.bin'

100%[=========================================>] 104,857,600 1.95M/s in 53s

2013-12-24 23:47:28 (1.88 MB/s) - `100MB-fremont.bin' saved [104857600/104857600]

DD啊，这个买VPS最看重的就是I/O性能了吧？
root@gongyi:~# dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB) copied, 2.38735 s, 450 MB/s

用一下老外的脚本再全面跑一下网络带宽测试和DD测试：
root@gongyi:~# dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB) copied, 2.38735 s, 450 MB/s
root@gongyi:~#
root@gongyi:~# wget freevps.us/downloads/bench.sh -O - -o /dev/null|bash
CPU model : Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz
Number of cores : 2
CPU frequency : 2099.998 MHz
Total amount of ram : 1007 MB
Total amount of swap : 511 MB
System uptime : 8:45,
Download speed from CacheFly: 55.8MB/s
Download speed from Coloat, Atlanta GA: 2.97MB/s
Download speed from Softlayer, Dallas, TX: 2.29MB/s
Download speed from Linode, Tokyo, JP: 207KB/s
Download speed from i3d.net, Rotterdam, NL: 15.4MB/s
Download speed from Leaseweb, Haarlem, NL: 17.6MB/s
Download speed from Softlayer, Singapore: 1.16MB/s
Download speed from Softlayer, Seattle, WA: 1.86MB/s
Download speed from Softlayer, San Jose, CA: 1.80MB/s
Download speed from Softlayer, Washington, DC: 3.04MB/s
I/O speed : 436 MB/s