Re: Athlon and fast_page_copy: What's it worth ? :)

In article <[EMAIL PROTECTED]> you wrote: > Hi, > Before I go any further with this investigation, I'd like to get an > idea > of how much of a performance improvement the K7 fast_page_copy will give > me. > Can someone suggest the best benchmark to test the speed of this > routine?

Re: Athlon and fast_page_copy: What's it worth ? :)

In article [EMAIL PROTECTED] you wrote: Hi, Before I go any further with this investigation, I'd like to get an idea of how much of a performance improvement the K7 fast_page_copy will give me. Can someone suggest the best benchmark to test the speed of this routine?

Re: Athlon and fast_page_copy: What's it worth ? :)

At 3:41 pm +0100 5/5/2001, Alan Cox wrote: >> My wild guess is that with the "faster" code, the K7 is avoiding loading >> cache lines just to write them out again, and is just writing tons of data. >> The PPC G4 - and perhaps even the G3 - performs a similar trick >> automatically, without

Re: Athlon and fast_page_copy: What's it worth ? :)

> My wild guess is that with the "faster" code, the K7 is avoiding loading > cache lines just to write them out again, and is just writing tons of data. > The PPC G4 - and perhaps even the G3 - performs a similar trick > automatically, without special assembly... X86 has done that since the K5

Re: Athlon and fast_page_copy: What's it worth ? :)

At 7:20 am +0100 5/5/2001, Mark Hahn wrote: >On Fri, 4 May 2001, Seth Goldberg wrote: > >> Hi, >> >> Before I go any further with this investigation, I'd like to get an >> idea >> of how much of a performance improvement the K7 fast_page_copy will give >> me. >> Can someone suggest the best

Re: Athlon and fast_page_copy: What's it worth ? :)

Mark Hahn wrote: > > On Fri, 4 May 2001, Seth Goldberg wrote: > > > Hi, > > > > Before I go any further with this investigation, I'd like to get an > > idea > > of how much of a performance improvement the K7 fast_page_copy will give > > me. > > Can someone suggest the best benchmark to test

Re: Athlon and fast_page_copy: What's it worth ? :)

> Before I go any further with this investigation, I'd like to get an > idea > of how much of a performance improvement the K7 fast_page_copy will give > me. > Can someone suggest the best benchmark to test the speed of this > routine? About 30% on page copies. Its impact in real world is very

Re: Athlon and fast_page_copy: What's it worth ? :)

On Fri, 4 May 2001, Seth Goldberg wrote: > Hi, > > Before I go any further with this investigation, I'd like to get an > idea > of how much of a performance improvement the K7 fast_page_copy will give > me. > Can someone suggest the best benchmark to test the speed of this > routine? Arjan

Re: Athlon and fast_page_copy: What's it worth ? :)

On Fri, 4 May 2001, Seth Goldberg wrote: Hi, Before I go any further with this investigation, I'd like to get an idea of how much of a performance improvement the K7 fast_page_copy will give me. Can someone suggest the best benchmark to test the speed of this routine? Arjan van de

Re: Athlon and fast_page_copy: What's it worth ? :)

Before I go any further with this investigation, I'd like to get an idea of how much of a performance improvement the K7 fast_page_copy will give me. Can someone suggest the best benchmark to test the speed of this routine? About 30% on page copies. Its impact in real world is very

Re: Athlon and fast_page_copy: What's it worth ? :)

Mark Hahn wrote: On Fri, 4 May 2001, Seth Goldberg wrote: Hi, Before I go any further with this investigation, I'd like to get an idea of how much of a performance improvement the K7 fast_page_copy will give me. Can someone suggest the best benchmark to test the speed of this

Re: Athlon and fast_page_copy: What's it worth ? :)

At 7:20 am +0100 5/5/2001, Mark Hahn wrote: On Fri, 4 May 2001, Seth Goldberg wrote: Hi, Before I go any further with this investigation, I'd like to get an idea of how much of a performance improvement the K7 fast_page_copy will give me. Can someone suggest the best benchmark to test

Re: Athlon and fast_page_copy: What's it worth ? :)

My wild guess is that with the faster code, the K7 is avoiding loading cache lines just to write them out again, and is just writing tons of data. The PPC G4 - and perhaps even the G3 - performs a similar trick automatically, without special assembly... X86 has done that since the K5 era.

Re: Athlon and fast_page_copy: What's it worth ? :)

At 3:41 pm +0100 5/5/2001, Alan Cox wrote: My wild guess is that with the faster code, the K7 is avoiding loading cache lines just to write them out again, and is just writing tons of data. The PPC G4 - and perhaps even the G3 - performs a similar trick automatically, without special

Athlon and fast_page_copy: What's it worth ? :)

Hi, Before I go any further with this investigation, I'd like to get an idea of how much of a performance improvement the K7 fast_page_copy will give me. Can someone suggest the best benchmark to test the speed of this routine? Thanks, Seth - To unsubscribe from this list: send the line

Athlon and fast_page_copy: What's it worth ? :)

Hi, Before I go any further with this investigation, I'd like to get an idea of how much of a performance improvement the K7 fast_page_copy will give me. Can someone suggest the best benchmark to test the speed of this routine? Thanks, Seth - To unsubscribe from this list: send the line