Re: [Pharo-users] Speed up JPG images loading
--- Begin Message --- Hi Sven, my test are close to yours, so there's nothing wrong with my image. [ Form fromFileNamed: 'pharo.png' ] benchFor: 10 seconds. "a BenchmarkResult(708 iterations in 10 seconds 4 milliseconds. 70.772 per second)" In case, I'll follow your hint to resort to Fuel. BTW I'm using Pharo5.0, Latest update: #50761, on a Linux machine Thanks, Matteo -- View this message in context: http://forum.world.st/Speed-up-JPG-images-loading-tp4921772p4922093.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. --- End Message ---
Re: [Pharo-users] Speed up JPG images loading
What does the Time Profiler show? Can you link to a sample picture? cheers -ben On Sat, Nov 5, 2016 at 11:11 PM, Matteo via Pharo-users wrote: > > > -- Forwarded message -- > From: Matteo > To: "Pharo is welcome (ML)" > Cc: > Date: Sat, 5 Nov 2016 16:10:45 +0100 > Subject: Speed up JPG images loading > Dears, > I'm loading a lot of pictures (70) through the method > "ImageReadWriter>>formFromFileNamed:". > The method is very slow, with images bigger than 5MB. > > Is there a way to improve the pictures speed loading? > > > Thanks > Matteo > >
Re: [Pharo-users] Speed up JPG images loading
I found a reference to a similar discussion from the past: https://pharo.fogbugz.com/f/cases/17403/Creating-Forms-from-PNGs-is-very-slow Matteo, This is part of what I wrote (for a smaller PNG): 'http://pharo.org/files/pharo.png' asZnUrl saveContentsToFile: 'pharo.png'. 'pharo.png' asFileReference size. "34696" [ Form fromFileNamed: 'pharo.png' ] benchFor: 10 seconds. "a BenchmarkResult(615 iterations in 10 seconds 14 milliseconds. 61.414 per second)" "0.016282926s per execution" FLSerializer serialize: (Form fromFileNamed: 'pharo.png') toFileNamed: 'pharo.form.fuel'. [ FLMaterializer materializeFromFileNamed: 'pharo.form.fuel' ] benchFor: 10 seconds. "a BenchmarkResult(16,443 iterations in 10 seconds 2 milliseconds. 1,644 per second)" "0:00:00:00.000608283s per execution" Sven > On 5 Nov 2016, at 19:23, Sven Van Caekenberghe wrote: > > Hi Matteo, > >> On 5 Nov 2016, at 16:11, Matteo via Pharo-users >> wrote: >> >> >> From: Matteo >> Subject: Speed up JPG images loading >> Date: 5 November 2016 at 16:10:45 GMT+1 >> To: "Pharo is welcome (ML)" >> >> >> Dears, >> I'm loading a lot of pictures (70) through the method >> "ImageReadWriter>>formFromFileNamed:". >> The method is very slow, with images bigger than 5MB. >> >> Is there a way to improve the pictures speed loading? >> >> >> Thanks >> Matteo > > I think we'll need more details. > > Here is what I tried: > > (ImageReadWriter formFromFileNamed: > '/Users/sven/Desktop/audio359-main-1600.jpg') asMorph openInWindow. > > This is a 319K JPG 1600x2263 (Form's Bitmap length is 3620800). > > [ ImageReadWriter formFromFileNamed: > '/Users/sven/Desktop/audio359-main-1600.jpg' ] bench. > > '2.788 per second' > > 2 to 3 per second is not very fast, but you create forms of 3.5M - In this > case the PluginBasedJPEGReadWriter is used, which should be faster then any > of the other formats. > > What you can do is store a FUEL version of the Form on file, that will be > (much) faster (but much larger, it is basically a non-compressed version). > > Sven >
Re: [Pharo-users] Speed up JPG images loading
Hi Matteo, > On 5 Nov 2016, at 16:11, Matteo via Pharo-users > wrote: > > > From: Matteo > Subject: Speed up JPG images loading > Date: 5 November 2016 at 16:10:45 GMT+1 > To: "Pharo is welcome (ML)" > > > Dears, > I'm loading a lot of pictures (70) through the method > "ImageReadWriter>>formFromFileNamed:". > The method is very slow, with images bigger than 5MB. > > Is there a way to improve the pictures speed loading? > > > Thanks > Matteo I think we'll need more details. Here is what I tried: (ImageReadWriter formFromFileNamed: '/Users/sven/Desktop/audio359-main-1600.jpg') asMorph openInWindow. This is a 319K JPG 1600x2263 (Form's Bitmap length is 3620800). [ ImageReadWriter formFromFileNamed: '/Users/sven/Desktop/audio359-main-1600.jpg' ] bench. '2.788 per second' 2 to 3 per second is not very fast, but you create forms of 3.5M - In this case the PluginBasedJPEGReadWriter is used, which should be faster then any of the other formats. What you can do is store a FUEL version of the Form on file, that will be (much) faster (but much larger, it is basically a non-compressed version). Sven
[Pharo-users] Speed up JPG images loading
--- Begin Message --- Dears, I'm loading a lot of pictures (70) through the method "ImageReadWriter>>formFromFileNamed:". The method is very slow, with images bigger than 5MB. Is there a way to improve the pictures speed loading? Thanks Matteo --- End Message ---
