From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dave Winchell <dwinchell@virtualiron.com>
Subject: Re: Re: Fix for get_s_time()
Date: Tue, 29 Apr 2008 10:21:54 -0400
Message-ID: <48172F02.6000600@virtualiron.com>
References: <C43C8971.17F6A%keir.fraser@eu.citrix.com>
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To: Keir Fraser <keir.fraser@eu.citrix.com>
Cc: Dave Winchell <dwinchell@virtualiron.com>, "dan.magenheimer@oracle.com" <dan.magenheimer@oracle.com>, "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>, Ian Pratt <Ian.Pratt@eu.citrix.com>, "Tian, Kevin" <kevin.tian@intel.com>
List-Id: xen-devel@lists.xenproject.org

Yes. Its an AMD Warthog. I'll try some other platforms when I get a chance.

-Dave

Keir Fraser wrote:

>So does the below indicate that 92529 of your HPET accesses took between 0
>and 63 cycles? That seems rather short for an access off-chip and to the
>southbridge.
>
> -- Keir
>
>On 28/4/08 19:40, "Dave Winchell" <dwinchell@virtualiron.com> wrote:
>
>  
>
>>read_64_main_counter() On stime:
>>
>>(VMM)  cycles per bucket 64
>>(VMM)
>>(VMM)  0: 0 78795 148271 21173 15902 47704 89195 121962
>>(VMM)  8: 83632 51848 17531 12987 10976 8816 9120 8608
>>(VMM)  16: 5685 3972 3783 2518 1052 710 608 469
>>(VMM)  24: 277 159 83 46 34 23 19 16
>>(VMM)  32: 9 6 7 3 4 8 5 6
>>(VMM)  40: 9 7 14 13 17 25 22 29
>>(VMM)  48: 25 19 35 27 30 26 21 23
>>(VMM)  56: 17 24 12 27 22 18 10 22
>>(VMM)  64: 19 16 16 16 28 18 23 16
>>(VMM)  72: 22 22 12 14 21 19 17 19
>>(VMM)  80: 18 14 10 14 11 12 8 18
>>(VMM)  88: 16 10 17 14 10 8 11 11
>>(VMM)  96: 10 10 0 175
>>
>>read_64_main_counter() Going to the hardware:
>>
>>(VMM)  cycles per bucket 64
>>(VMM)
>>(VMM)  0: 92529 148423 27850 12532 28042 43336 60516 59011
>>(VMM)  8: 36895 14043 8162 6857 7794 7401 5099 2986
>>(VMM)  16: 1636 1066 796 592 459 409 314 248
>>(VMM)  24: 206 195 138 97 71 45 35 34
>>(VMM)  32: 33 36 40 40 25 26 25 26
>>(VMM)  40: 37 23 18 30 27 30 34 44
>>(VMM)  48: 38 19 25 23 23 25 21 27
>>(VMM)  56: 28 24 43 80 220 324 568 599
>>(VMM)  64: 610 565 611 699 690 846 874 788
>>(VMM)  72: 703 542 556 613 605 603 559 500
>>(VMM)  80: 485 493 512 578 561 594 575 614
>>(VMM)  88: 759 851 895 856 807 770 719 958
>>(VMM)  96: 1127 1263 0 18219
>>
>>    
>>
>
>
>  
>