Thanks Devon, I am doing exactly that now... will report if I see any change. I'm running a top to see if background processes are making it slower etc.
Could you also give me an idea on the 2nd point? How much does the suspend time depend on I/O happening in the container. Going by traditional papers on migration high I/O will impact the performance because it increases "delta pages" after initial rsync.? I would like to get an idea that typically how much I/O can it support? In my case for write intensive application.. the suspend time increases to several minutes for even 500 Kbps. Thanks Nipun On Sat, Nov 22, 2014 at 12:50 PM, Devon B. <[email protected]> wrote: > Suspend/dump shouldn't have anything to do with the disk size of the > container AFAIK. That should only be dumping the memory of the system. > Have you tested multiple times? Maybe a process hung during the suspend? > It might also be useful for you to track the size of the dump file. > > Nipun Arora <[email protected]> > Saturday, November 22, 2014 12:09 PM > Hi All, > > I was wondering if anyone can suggest what is the most optimal way to do > the following > > 1. Can anyone clarify if ploop is the best layout for minimum suspend time > during live migration? > > 2. I tried migrating a ploop device where I increased the --diskspace to > 5G, and found that the suspend time taken by live migration increased to 57 > seconds (mainly undump and restore increased)... whereas a 2G diskspace was > taking 2-3 seconds suspend time... Is this expected? > > 3. I tried running a write intensive workload, and found that beyond > 100-150Kbps, the suspend time during live migration rapidly increased? Is > this an expected trend? > > I am using vzctl 4.7, and ploop 1.11 in centos 6.5 > > Thanks > Nipun > _______________________________________________ > Users mailing list > [email protected] > https://lists.openvz.org/mailman/listinfo/users > > > _______________________________________________ > Users mailing list > [email protected] > https://lists.openvz.org/mailman/listinfo/users > >
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