Marcus,

Thank you for sending these. I made up two images (based on #1059) with and without these changes and measured performance on the A-test board. Here are the numbers from three measurements each:

without: '#1059 memory=19310712 display=1012x700x16 painter=1483.2 viewer=1802.4 scriptor=1487.2 category=2628.8 ' '#1059 memory=19228056 display=1012x700x16 painter=1478.4 viewer=1796.8 scriptor=1470.4 category=2625.2 ' '#1059 memory=19022612 display=1012x700x16 painter=1565.2 viewer=1803.8 scriptor=1468.4 category=2627.0 '

with: '#1059 memory=19322540 display=1012x700x16 painter=1540.2 viewer=1701.4 scriptor=1428.8 category=2449.2 ' '#1059 memory=19239884 display=1012x700x16 painter=1523.2 viewer=1691.2 scriptor=1411.2 category=2446.8 ' '#1059 memory=19030604 display=1012x700x16 painter=1605.8 viewer=1701.4 scriptor=1401.6 category=2460.8 '

Other than "painter", we get several percent points improvement. Pretty good.

I'm a bit puzzled to see the performance degragation in "painter"... Probably I should try different combinations of these changes, but at this piont, I'd push all to the update stream.

Thank you so much!

-- Yoshiki

Thanks very very much Marcus!

Cheers,

Alan

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At 07:07 AM 10/13/2006, Marcus Denker wrote:

Hi,

attached are some changeset that are in 3.9 which might help a little with perfomance...

I have no idea how to properly benchmark this... but starting up the image, run the eToy macrobenchmark. Then I filed in all the changesets and ran the benchmarks again.

Result (MacBook pro, Squeak 3.8.12beta5U):

Before: #960 memory=20464928 display=1012x700x16 painter=214.8 viewer=186.4 scriptor=139.4 category=232.6 After: #960 memory=22901456 display=1012x700x16 painter=185.4 viewer=173.4 scriptor=132.8 category=214.8

The changesets have been checked and fixed against OLPC-Squeak- latest.zip as downloaded today.

More to come later...

Marcus

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