<div dir="ltr">You know the saying, "when something seems too good to be true"...<div><br></div><div>I just installed centos 6.5 and openvz on an older machine, and when I built an ubuntu 12.04 CT I noticed that ploop is now the default layout. Cool. So I built another ubuntu12.04 CT, identical in every way except that I specified smifs, so I could do a quick performance comparison.</div>
<div><br></div><div>First I did a quick timed dd run, then I ran dbench with varying numbers of clients.</div><div><br></div><div>The simfs CT showed performance roughly similar to the host, which was not too surprising.</div>
<div>What did surprise me was that the ploop CT showed performance which was significantly better than the host, in both the dd test and the dbench tests.</div><div><br></div><div>I know someone will tell me "dbench is a terrible benchmark" but it's also a standard. Of course, if anyone knows a "better" benchmark, I'd love to try it.</div>
<div><br></div><div>Regards,</div><div><br></div><div>J J</div></div>