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Jared Brandt's questions

Martin Hope
Jared Brandt
Asked: 2019-05-09 22:58:50 +0800 CST
  • 0

According to the libvirt documentation:

A VM configured with value 2048 will get twice as much CPU time as a VM configured with value 1024.

I have also heard it said that a VM with 2 vCPUs would have twice as much CPU time as a VM with one vCPU. Is this correct? And then, does the "shares" element take that into account as well?

For example, which of these two scenarios would be correct?

  • 1 vCPU x 10 Shares = 10 Units of CPU time
  • 2 vCPU x 10 Shares = 20 Units of CPU time
  • 1 vCPU x 20 Shares = 20 Units of CPU time
  • 2 vCPU x 20 Shares = 40 Units of CPU time

Or:

  • 1 vCPU x 10 Shares = 10 Units of CPU time
  • 2 vCPU x 10 Shares = 10 Units of CPU time
  • 1 vCPU x 20 Shares = 20 Units of CPU time
  • 2 vCPU x 20 Shares = 20 Units of CPU time

Thank you for reading!

kvm-virtualization
Martin Hope
Jared Brandt
Asked: 2019-02-11 09:48:49 +0800 CST
  • 1

I was wondering if it is possible to have nginx rewrite a URL to point to the most recent (last naturally sorted) version of a file? Basically, I have a directory full of revisions of a file, like this:

/var/files/file-5.6.10.3.txt
/var/files/file-5.6.10.12.txt
/var/files/file-5.6.10.20.txt
/var/files/file-5.6.12.1.txt
...

And I would like to rewrite a request for "file.txt" to the most recent version of that file. This is kind of what I want to do:

root /var/files;
rewrite file.txt $(ls -v /var/files | tail -1);

Or a 302 would be good too!

location file.txt {
    return 302 $(ls -v /var/files | tail -1);
}

Please also note that symlinking is not an option :( I would like to have this handled by nginx, or some extension to nginx.

nginx