Gerrit, Chandra,
we have a number of questions regarding CKRM code - first of all, what
is the right place to ask them?
we looked through the code available at SF and basically while there is
a job to be done it does look like both CKRM and OpenVZ-UBC projects
(http://openvz.org) can benefit from each other and it is possible to
make both projects mergeable. Our questions mainly concerns what
populates the framework itself:
1. what is the base kernel version used for CKRM? And what version is
recommended to use/investigate/study?
On the site I can see that most part of the code is available in
krm-old branch only. Is it for 2.6.8 kernel?
2. CPU scheduler
- Do you have any benchmarks of CKRM CPU scheduler?
For example, Java Volano benchmark? What is the overhead of CKRM CPU
scheduler on SMP system compared to native Linux CPU scheduler?
- Is CKRM CPU scheduler SMP-scalable? Do you have any benchmark results
available?
3. Why have you started implementing your own I/O scheduler? Is there
something wrong with recent CFQ Linux I/O scheduler? With CFQv2?
4. Memory accounting. Do you plan to improve handling of shared pages?
Do you have any roadmap available? Right now the sum of memory
consumption of classses can exceed physical memory available which is
very confusing... Do you plan to account/limit any other kernel objects
(slabs, page tables, etc.)?
and frankly there is a feeling that many code at SF is kind of obsolete.
Can we get a "real" patch? i mean current one if it is available, or for
any version kernel which you think is complete?
Thank you,
OpenVZ kernel leader,
Kirill Korotaev
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