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Re: TSC is not constant on multi-core X86

From: Andrei Borzenkov
Subject: Re: TSC is not constant on multi-core X86
Date: Sat, 25 Oct 2014 09:08:31 +0400

В Fri, 24 Oct 2014 16:31:14 -0400
Michael Gilbert <address@hidden> пишет:

> We are using an Atom D410 CPU (single core). We intend to upgrade to an 
> Atom D510 (dual core). On the same system, the D510 takes about 60 
> seconds longer to exit GRUB.

What "exit GRUB" means? Could you explain in some more details?

> I thought the issue might be the TSC being unreliable in the dual core 
> CPU but they (D410/D510) both have the "constant_tsc" flag set in 
> /proc/cpuinfo.
> Does anyone have any information that might help me figure out what's 
> going on?
> Thanks,
> Mike
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