Re: [Mono-devel-list] Mono ASP.NET is very slow with big html pages...
Hello, We've rewritten our programm without using any server side text-size calculation... I just use the client browser, (a table without any fixed width can adapt his size automatically) Now, my pages loads as fast as MS.NET But, the problem isn't here System.Drawing font measure function is incredibly slower and CPU intensive than MS.NET... I can do benchmarks if you want... (i've gentoo linux and WS2003 on the same machine) Le Jeudi 12 Mai 2005 19:50, Rafael Teixeira a écrit : Also, you can create that font only once (cache it by the Name and Size) and reuse in many pages, just beware o memory consumption, if you doesn't limit the choices for fonts and sizes. I also reiterate what Ben said, doesn't calculate things on the server, because things will go diferently on the client. To add another issue (besides user-chosen-css, installed fonts) the resolution may be different, what makes the same font render quite differently. HIH, On 5/12/05, Ben Maurer [EMAIL PROTECTED] wrote: On Thu, 2005-05-12 at 11:04 +0200, Hubert FONGARNAND wrote: I apologize, i've found my problem... This slowdown is due to System.Drawing Let me explain... Mono renders a page with more than 100 menu, for each menu, the largest item size is calculated by this function : SizeF size; float emSize = Convert.ToSingle(fontInfo.Size.Unit.Value); emSize = (emSize==0 ?8 :emSize); Font stringFont = new Font(fontInfo.Name, emSize); Graphics g=new Bitmap(1,1); size = g.MeasureString(text, stringFont); g.Dispose(); return size; After doing some tests, i've seen that the slowest line is : Font stringFont = new Font(fontInfo.Name, emSize); So the creation of this Font object (the font is Arial) is extremely slow comparing to MS.NET... If I remove this line, the page loads as fast as MS.NET (a little bit faster...) Is there a way to optimize System.Drawing for this problem; or is there a better way to measure a text string length (with variable font size) without using this very slow function... I'm not sure how much we can speed that up. I can take a look at how Cairo does the stuff. However, if I understand what you are doing correctly, you are trying to measure a string on the server and see how large it will be on the client. I am not sure how well that will work. On the client side, people might have different fonts installed, or might even use a user css sheet. Nonetheless, we should still try to be faster here. -- Ben ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list ___ Ce message et les éventuels documents joints peuvent contenir des informations confidentielles. Au cas où il ne vous serait pas destiné, nous vous remercions de bien vouloir le supprimer et en aviser immédiatement l'expéditeur. Toute utilisation de ce message non conforme à sa destination, toute diffusion ou publication, totale ou partielle et quel qu'en soit le moyen est formellement interdite. Les communications sur internet n'étant pas sécurisées, l'intégrité de ce message n'est pas assurée et la société émettrice ne peut être tenue pour responsable de son contenu. ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
Re: [Mono-devel-list] Mono ASP.NET is very slow with big html pages...
I apologize, i've found my problem... This slowdown is due to System.Drawing Let me explain... Mono renders a page with more than 100 menu, for each menu, the largest item size is calculated by this function : SizeF size; float emSize = Convert.ToSingle(fontInfo.Size.Unit.Value); emSize = (emSize==0 ?8 :emSize); Font stringFont = new Font(fontInfo.Name, emSize); Graphics g=new Bitmap(1,1); size = g.MeasureString(text, stringFont); g.Dispose(); return size; After doing some tests, i've seen that the slowest line is : Font stringFont = new Font(fontInfo.Name, emSize); So the creation of this Font object (the font is Arial) is extremely slow comparing to MS.NET... If I remove this line, the page loads as fast as MS.NET (a little bit faster...) Is there a way to optimize System.Drawing for this problem; or is there a better way to measure a text string length (with variable font size) without using this very slow function... Thanks in advance Le Jeudi 12 Mai 2005 00:11, Gonzalo Paniagua Javier a écrit : On Wed, 2005-05-11 at 10:41 +0200, Hubert FONGARNAND wrote: I'm currently working on an intranet project. We want to develop it as a cross-platform project. It would be useful that it could run under MS.NET or Mono... I'm working with the svn version of mono 1.1.7.99 I've seen that mono (xsp) is very slow when rendering (relative) big html rich content. My Accueil.aspx pages is about 315Ko... It contains many javascript for generating menus dynamically. On MS.NET, the page takes 3sec (the first time) to be rendered, and about 500ms (the second time) On Mono it takes about 12sec everytime. when rendering the xsp process takes about 100% of my cpu : Is there a way to do some profiling in order to know wich method takes the more time? When I run mono --verbose xsp.exe I see that xsp is waiting most of time... is it normal? You can use --profile or file a bug report in bugzilla including a test case and we'll do the profile. -Gonzalo ___ Ce message et les éventuels documents joints peuvent contenir des informations confidentielles. Au cas où il ne vous serait pas destiné, nous vous remercions de bien vouloir le supprimer et en aviser immédiatement l'expéditeur. Toute utilisation de ce message non conforme à sa destination, toute diffusion ou publication, totale ou partielle et quel qu'en soit le moyen est formellement interdite. Les communications sur internet n'étant pas sécurisées, l'intégrité de ce message n'est pas assurée et la société émettrice ne peut être tenue pour responsable de son contenu. ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
Re: [Mono-devel-list] Mono ASP.NET is very slow with big html pages...
On Thu, 2005-05-12 at 11:04 +0200, Hubert FONGARNAND wrote: I apologize, i've found my problem... This slowdown is due to System.Drawing Let me explain... Mono renders a page with more than 100 menu, for each menu, the largest item size is calculated by this function : SizeF size; float emSize = Convert.ToSingle(fontInfo.Size.Unit.Value); emSize = (emSize==0 ?8 :emSize); Font stringFont = new Font(fontInfo.Name, emSize); Graphics g=new Bitmap(1,1); size = g.MeasureString(text, stringFont); g.Dispose(); return size; After doing some tests, i've seen that the slowest line is : Font stringFont = new Font(fontInfo.Name, emSize); So the creation of this Font object (the font is Arial) is extremely slow comparing to MS.NET... If I remove this line, the page loads as fast as MS.NET (a little bit faster...) Is there a way to optimize System.Drawing for this problem; or is there a better way to measure a text string length (with variable font size) without using this very slow function... I'm not sure how much we can speed that up. I can take a look at how Cairo does the stuff. However, if I understand what you are doing correctly, you are trying to measure a string on the server and see how large it will be on the client. I am not sure how well that will work. On the client side, people might have different fonts installed, or might even use a user css sheet. Nonetheless, we should still try to be faster here. -- Ben ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
Re: [Mono-devel-list] Mono ASP.NET is very slow with big html pages...
First of all, Separate your Javascript on a .js file that you include, and generate your menus from embedded or on-demand xml data. 315KB for a page is surely not a good design. :) On 5/11/05, Hubert FONGARNAND [EMAIL PROTECTED] wrote: I'm currently working on an intranet project. We want to develop it as a cross-platform project. It would be useful that it could run under MS.NET or Mono... I'm working with the svn version of mono 1.1.7.99 I've seen that mono (xsp) is very slow when rendering (relative) big html rich content. My Accueil.aspx pages is about 315Ko... It contains many javascript for generating menus dynamically. On MS.NET, the page takes 3sec (the first time) to be rendered, and about 500ms (the second time) On Mono it takes about 12sec everytime. when rendering the xsp process takes about 100% of my cpu : Is there a way to do some profiling in order to know wich method takes the more time? When I run mono --verbose xsp.exe I see that xsp is waiting most of time... is it normal? Thanks in advance... ___ Ce message et les éventuels documents joints peuvent contenir des informations confidentielles. Au cas où il ne vous serait pas destiné, nous vous remercions de bien vouloir le supprimer et en aviser immédiatement l'expéditeur. Toute utilisation de ce message non conforme à sa destination, toute diffusion ou publication, totale ou partielle et quel qu'en soit le moyen est formellement interdite. Les communications sur internet n'étant pas sécurisées, l'intégrité de ce message n'est pas assurée et la société émettrice ne peut être tenue pour responsable de son contenu. ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list -- Rafael Monoman Teixeira --- I'm trying to become a Rosh Gadol before my own eyes. See http://www.joelonsoftware.com/items/2004/12/06.html for enlightment. It hurts! ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
Re: [Mono-devel-list] Mono ASP.NET is very slow with big html pages...
On Wed, 2005-05-11 at 10:41 +0200, Hubert FONGARNAND wrote: I'm currently working on an intranet project. We want to develop it as a cross-platform project. It would be useful that it could run under MS.NET or Mono... I'm working with the svn version of mono 1.1.7.99 I've seen that mono (xsp) is very slow when rendering (relative) big html rich content. My Accueil.aspx pages is about 315Ko... It contains many javascript for generating menus dynamically. On MS.NET, the page takes 3sec (the first time) to be rendered, and about 500ms (the second time) On Mono it takes about 12sec everytime. when rendering the xsp process takes about 100% of my cpu : Is there a way to do some profiling in order to know wich method takes the more time? When I run mono --verbose xsp.exe I see that xsp is waiting most of time... is it normal? You can use --profile or file a bug report in bugzilla including a test case and we'll do the profile. -Gonzalo ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
