Ramhost KVM VPS 初试用感受

上周闲逛ramhost的销售页面的时候,突然发现最低配置的那款KVM还有一个空余,大喜过望,赶紧抢了回来。熟悉VPS市场的人都知道,ramhost是评价非常好的一家,而且基本一有货就被抢购一空。

Ramhost的这款KVM位于大家都喜欢的西海岸Los Angeles,256MB RAM, 7GB HDD, 月流量200GB,按季付费$15。

花了4天(!!!)才被email通知VPS已经上线,这一点也是ramhost的特色啊……去年买tinyvz的时候也是将近3个工作日才拿到。顺便一提,tinyvz虽然有一些配置上的不足,但是作为一款Low End Box,性价比还是非常高的,当然现在也是缺货 :-)

附上UnixBench的结果:

1 CPU in system; running 1 parallel copy of tests

Dhrystone 2 using register variables       19608315.5 lps   (10.0 s, 7 samples)
Double-Precision Whetstone                     3336.0 MWIPS (10.1 s, 7 samples)
Execl Throughput                               5558.8 lps   (29.8 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks        791898.7 KBps  (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks          215293.9 KBps  (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks       2109799.4 KBps  (30.0 s, 2 samples)
Pipe Throughput                             1166903.4 lps   (10.0 s, 7 samples)
Pipe-based Context Switching                 256525.5 lps   (10.0 s, 7 samples)
Process Creation                              20489.5 lps   (30.0 s, 2 samples)
Shell Scripts (1 concurrent)                   3838.5 lpm   (60.0 s, 2 samples)
Shell Scripts (8 concurrent)                    561.8 lpm   (60.1 s, 2 samples)
System Call Overhead                        1158814.1 lps   (10.0 s, 7 samples)

System Benchmarks Index Values               BASELINE       RESULT    INDEX
Dhrystone 2 using register variables         116700.0   19608315.5   1680.2
Double-Precision Whetstone                       55.0       3336.0    606.5
Execl Throughput                                 43.0       5558.8   1292.8
File Copy 1024 bufsize 2000 maxblocks          3960.0     791898.7   1999.7
File Copy 256 bufsize 500 maxblocks            1655.0     215293.9   1300.9
File Copy 4096 bufsize 8000 maxblocks          5800.0    2109799.4   3637.6
Pipe Throughput                               12440.0    1166903.4    938.0
Pipe-based Context Switching                   4000.0     256525.5    641.3
Process Creation                                126.0      20489.5   1626.2
Shell Scripts (1 concurrent)                     42.4       3838.5    905.3
Shell Scripts (8 concurrent)                      6.0        561.8    936.4
System Call Overhead                          15000.0    1158814.1    772.5
                                                                   ========
System Benchmarks Index Score                                        1189.0

根据其他人的结果,据说能达到1300。之前提到的Hostigation KVM,和这个比起来简直弱爆了!

硬盘I/O也很给力,这是我看到的最接近Kiloserve的I/O了(Kiloserve的I/O太霸道):

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, 4.47957 s, 240 MB/s

和国内的网速也很快,我用VNC安装Linux,感觉比Hostigation的那个画面延迟小很多。早上运行超级ping的结果:

$5每月,能有这样的VPS,怪不得ramhost的口碑这么好。

本文为悠然居(https://wordpress.youran.me/)的原创文章,转载请注明出处!

One thought on “Ramhost KVM VPS 初试用感受”

  1. Ramhost的KVM有他们独有的,很蛋疼的I/O调控体制。如果你的VPS一直没有什么I/O,然后突然有了很大的I/O比如dd,那么首次dd的结果是只有杯具的几M/s,但是如果你坚持不懈地dd,会发现I/O慢慢恢复到正常水平了。具体情况可以参考他们论坛的告示贴:
    https://forum.ramhost.us/bbs/viewtopic.php?id=649

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