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A comment on Are spot instances killing the performance of Amazon EC2?. Parent comment

Re:Are spot instances killing the performance of Amazon EC2? by lallysingh on Friday January 15, 2010 @02:37PM (#1055679)
I don't know the virtualization system they're using. Could some of the (partially virtual) network stack be software based, and thusly respond to memory pressure?
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Re:Are spot instances killing the performance of Amazon EC2? by timdorr on Friday January 15, 2010 @04:28PM (#1055925)
They use Xen. No idea on the network architecture, though.
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