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2013 Jul 31
4
[LLVMdev] [Proposal] Speculative execution of function calls
Hello,
Chris requested I start a fresh discussion on this, so, here goes. The previous iterations can be found here (and in follow-ups):
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20130722/182590.html
http://lists.cs.uiuc.edu/pipermail/llvmdev/2013-July/064047.html
Cutting to the chase, the goal is to enhance llvm::isSafeToSpeculativelyExecute() to support call instructions.
isSafeToSpeculativelyExecute() is a query that, basically, determines whether it is safe to move an instruction that...
2010 Jul 21
6
[Fwd: XCP - extreme high load on pool master]
Good day.
We trying to test XCP cloud under some product-like load (4 hosts, each with 24Gb mem and 8 cores)
But with just about 30-40 virtual machines I got an extreme load on dom0
on pool master host: LA is about 3.5-6, and most time are used by xapi
and stunnel processes.
It''s really bother me: what happens on higher load with few thousands of
VMs with about 10-16 hosts in pool...