Messages in this thread | | | Subject | RE: MTRR & HT | Date | Tue, 4 Mar 2003 08:01:48 -0800 | From | "Nakajima, Jun" <> |
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MTRRs must always be set properly, and they need to be consistent among the CPUs (and E820 info). For HT, they are shared between the two logical processors in a processor package. So you just set them once per processor package. Wrong MTTR setups (e.g. set UC for WB) can easily cause performance problems.
Jun
> -----Original Message----- > From: Reed, Timothy A [mailto:timothy.a.reed@lmco.com] > Sent: Tuesday, March 04, 2003 3:37 AM > To: Linux Kernel ML (E-mail) > Subject: MTRR & HT > > Morning all, > > Quick question about MTRR and Hyper-Threading, should I be using > MTRR in conjuction with HT? Are there any performance reasons to use or > not > use MTRR with HT? > > TIA > Timothy Reed > Software Engineer \ Systems Administrator > Lockheed Martin - NE & SS Syracuse > Email: timothy.a.reed@lmco.com > > There are 10 types of people in the world; those who understand binary and > those who don't > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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