Re: MTRR survey: better X performance on systems with 3G or more RAM

2009-04-18 Thread D. Hugh Redelmeier
| From: D. Hugh Redelmeier h...@mimosa.com | | From: Bob Marcan bob.mar...@gmail.com | I'm quite surprised at your observations. | (The other thing I noticed is that your glxgears performance is very | very good. This may indicate that something else is going on. | Perhaps the intel driver now

Re: MTRR survey: better X performance on systems with 3G or more RAM

2009-04-13 Thread Bob Marcan
On Sun, 12 Apr 2009 23:58:38 -0400 (EDT) D. Hugh Redelmeier h...@mimosa.com wrote: == What I'd like to know about your system: Computer brand and model (or motherboard info): Supermicro C2SBA motherboard, Intel(R) Core(TM)2 Quad CPUQ9400 @ 2.66GHz video

Re: MTRR survey: better X performance on systems with 3G or more RAM

2009-04-13 Thread D. Hugh Redelmeier
| From: Bob Marcan bob.mar...@gmail.com Thanks very much for trying this. I'm quite surprised at your observations. It looks to me as if your video card's buffer needed to be uncovered but the performance you observed didn't improve significantly. I've never seen that before. I'm wondering if

Re: MTRR survey: better X performance on systems with 3G or more RAM

2009-04-13 Thread Frantisek Hanzlik
D. Hugh Redelmeier wrote: == What I'd like to know about your system: Computer brand and model (or motherboard info): video controller: X video driver: RAM: distro: MTRR problem: Fix: glxgears performance change: I tried it on HW: Asus P5E-VM HDMI MB with G35

MTRR survey: better X performance on systems with 3G or more RAM

2009-04-12 Thread D. Hugh Redelmeier
MTRRs are still not handled well in X. I suspect this shows up in a lot of machines with 3G or more of memory. I'd like to know how common this is. I'd like affected people to answer my informal survey. In return, I will suggest how you can speed up your system. MTRRs control how memory is