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Re: how to test and compare performance of bullseye for i386 and amd64

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On Tue 25 Jan 2022 at 01:37:29 (-0500), a wrote:
> Thank David and Polyna-Maude!
> 
> it's surprising that "The x64 binary are also somewhat larger than the
> i386 binaries"
> 
> i compare some packages of bullseye for both arch, they happen to be
> contrary
> 
> though difference is small and IMO has little impact on performance
> 
> firefox-esr for i386: size= 58465416
> 
> firefox-esr for amd64: size= 55451188
> 
> gcc-10 for i386: size= 18097884
> 
> gcc-10 for amd64: size=  16990272

Well, we've gone from ISOs containing different inventories to sizes
of packages. I still don't see how that affects performance.

All I did was to type ls -l /usr/bin for the two architectures into
two xterms in two viewports, and blink-compare them. Some binaries
were larger and some were smaller.

But let's try running them. I happen to have two freshly installed
bullseyes, and neither has run the installed FF before. Their dotfiles
in my home directories are close to identical, and their starting
pages are blank.

i386:

   VSZ   RSZ %MEM      PID STAT   CMD
1200184 176396 34.9   1603 Sl+    firefox-esr
477488 50140  9.9     1880 Sl+    /usr/lib/firefox-esr/firefox-esr -contentproc -ch>
467760 34188  6.7     1821 Sl+    /usr/lib/firefox-esr/firefox-esr -contentproc -ch>
455296 27436  5.4     1958 Sl+    /usr/lib/firefox-esr/firefox-esr -contentproc -ch>

amd64:

   VSZ   RSZ %MEM        PID STAT   CMD
3082424 408156  2.5     2538 Sl+    firefox-esr
2446004 146664  0.9     2662 Sl+    /usr/lib/firefox-esr/firefox-esr -contentproc ->
2417628 117508  0.7     2694 Sl+    /usr/lib/firefox-esr/firefox-esr -contentproc ->
2403264 108072  0.6     2603 Sl+    /usr/lib/firefox-esr/firefox-esr -contentproc ->

The difference is larger than I thought it would be. Others would
have to interpret the actual numbers. The main difference that
/I/ notice is the speed, but it would be an unfair comparison,
pitching 1.5GHz/512MB with 1GB encrypted swap on 2004-era rust
against a multi-core 2.7GHz/16GB with a 2017-era SSD (but no swap).
Starting times come out at 3 minutes vs perhaps one second.

Cheers,
David.

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how to test and compare performance of bullseye for i386 and amd64 a <loushanguan2015@sina.com> - 2022-01-25 02:40 +0100
  Re: how to test and compare performance of bullseye for i386 and  amd64 David Wright <deblis@lionunicorn.co.uk> - 2022-01-25 04:10 +0100
    Re: how to test and compare performance of bullseye for i386 and  amd64 Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2022-01-25 05:00 +0100
      Re: how to test and compare performance of bullseye for i386 and  amd64 a <loushanguan2015@sina.com> - 2022-01-25 07:40 +0100
        Re: how to test and compare performance of bullseye for i386 and  amd64 <tomas@tuxteam.de> - 2022-01-25 15:40 +0100
          Re: how to test and compare performance of bullseye for i386 and  amd64 Greg Wooledge <greg@wooledge.org> - 2022-01-25 15:50 +0100
            Re: how to test and compare performance of bullseye for i386 and amd64 Stefan Monnier <monnier@iro.umontreal.ca> - 2022-01-25 19:00 +0100
          Re: how to test and compare performance of bullseye for i386 and amd64 Stefan Monnier <monnier@iro.umontreal.ca> - 2022-01-25 18:50 +0100
        Re: how to test and compare performance of bullseye for i386 and amd64 Stefan Monnier <monnier@iro.umontreal.ca> - 2022-01-25 15:40 +0100
        Re: how to test and compare performance of bullseye for i386 and  amd64 David Wright <deblis@lionunicorn.co.uk> - 2022-01-26 01:40 +0100
          Re: how to test and compare performance of bullseye for i386 and  amd64 Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2022-01-26 11:50 +0100
            Re: how to test and compare performance of bullseye for i386 and  amd64 David Wright <deblis@lionunicorn.co.uk> - 2022-01-26 17:50 +0100
            Re: how to test and compare performance of bullseye for i386 and  amd64 a <loushanguan2015@sina.com> - 2022-01-26 23:10 +0100
            Re: how to test and compare performance of bullseye for i386 and  amd64 a <loushanguan2015@sina.com> - 2022-01-27 07:20 +0100
              Re: how to test and compare performance of bullseye for i386 and  amd64 a <loushanguan2015@sina.com> - 2022-01-27 11:00 +0100
  Re: how to test and compare performance of bullseye for i386 and  amd64 Andy Smith <andy@strugglers.net> - 2022-01-25 13:00 +0100
    Re: how to test and compare performance of bullseye for i386 and amd64 Stefan Monnier <monnier@iro.umontreal.ca> - 2022-01-25 15:40 +0100

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