<div>Kir,</div><div><br></div>I'll send you the dbench scripts and output if you want - I'll even give you remote access to my test system if you want to take a look.<div><br></div><div>Joe<br><br><div class="gmail_quote">
On Mon, Mar 26, 2012 at 9:45 PM, Kirill Korotaev <span dir="ltr"><<a href="mailto:dev@parallels.com">dev@parallels.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
:)))<br>
Actually, this can't be true, cause simfs overhead is naturally 0%. It intercepts only statfs() to fix df output, all the rest calls are native. So it's statistical deviation if you see simfs to be slower then native.<br>
<br>
And, yes, ploop was designed to have near 0% overhead as well (unlike Linux loopback). It bypasses FS layer and works directly with block layer on fast paths.<br>
<br>
Thanks,<br>
Kirill<br>
<div><div class="h5"><br>
<br>
On Mar 27, 2012, at 04:01 , jjs - mainphrame wrote:<br>
<br>
> I'm happy to report that the ploop-based CT under 042stab053.4 finishes a punishing dbench run with no problems. I was curious to see what performance would be like, and the dbench results from the ploop-based CT are actually closer to the host performance than the simfs-based CT is.<br>
><br>
> Joe<br>
><br>
> On Mon, Mar 26, 2012 at 7:05 AM, Kir Kolyshkin <<a href="mailto:kir@openvz.org">kir@openvz.org</a>> wrote:<br>
> OpenVZ project has released a new RHEL6 based testing kernel. Read below<br>
> for more information. Everyone using this kernel branch is advised to<br>
> upgrade.<br>
><br>
> NOTE this is a *testing* kernel, not recommended for production.<br>
><br>
><br>
> Changes<br>
> =======<br>
> (since 042stab053.3)<br>
> * Fixes in UBC, CPT, ploop<br>
><br>
><br>
> Compatibility<br>
> =============<br>
> No new issues<br>
><br>
><br>
> Download<br>
> ========<br>
> <a href="http://wiki.openvz.org/Download/kernel/rhel6-testing/042stab053.4" target="_blank">http://wiki.openvz.org/Download/kernel/rhel6-testing/042stab053.4</a><br>
><br>
><br>
> Bug reporting<br>
> =============<br>
> Use <a href="http://bugzilla.openvz.org/" target="_blank">http://bugzilla.openvz.org/</a> to report any bugs found.<br>
><br>
><br>
> Other sources of info on updates<br>
> ================================<br>
> See <a href="http://wiki.openvz.org/News" target="_blank">http://wiki.openvz.org/News</a> to view all the news (including updates)<br>
> online. There you can also find RSS/Atom feed links.<br>
><br>
><br>
> Best regards,<br>
> OpenVZ team.<br>
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</div></div>> <ATT00001.c><br>
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