Thanks for the response. Let me be a bit more clear: I am using createbufferStrategy(1) to create single buffered windows (sorry for wording). I have java2d nodraw set to true due to some problems we had with it that have not been addressed. I need to know how much ram I can expect the buffers to take up as a function of the number of windows/size of windows/resolution/etc. (Win XP/Win 7 are primary usages of the application)
Thanks, --Dmitriy P.S. sorry for the conf. notice, automatically injected by my mail server. -----Original Message----- From: Artem Ananiev [mailto:artem.anan...@oracle.com] Sent: Tuesday, April 26, 2011 6:23 AM To: Dmitriy Likhten Cc: 'awt-dev@openjdk.java.net'; 2d-...@openjdk.java.net Subject: Re: <AWT Dev> Render Buffer memory usage question. On 4/25/2011 11:44 PM, Dmitriy Likhten wrote: > I've been looking around for knowledge on this, I figured the guys > implementing might know a bit about it J Hopefully you guys can help out. > > Basically I have multiple JFrames with a single buffer strategies. I I don't quite get what is "multiple JFrames with a single buffer strategies". createBufferStrategy() API is per-Window, so if you have N windows, you also have N BufferStrategy instances. > would like to know how I can determine how much memory would be > required just to render the buffers for those frames in Windows XP/7. > The setups will most likely have 2-6 monitors and window sizes can be > anywhere from a small window, to a maximized, to stretched across 6 > monitors. Given total desktop resolution, window sizes, window > positions, etc, is there a good strategy I can use to approximate with > maybe 70%+ fidelity how much ram will be needed to render the windows? > I would like to keep the ram requirements to the bare minimum > (flexible but the less the better) needed without hitting any sort of > thrashing (if that is an issue). Why do you need this information? AWT/Swing apps don't have direct control over BufferStrategy: you can draw to it, but cannot control if it uses video memory, system memory, when it gets lost, etc. Adding 2d-dev alias to CC as BufferStrategy class are mostly Java2D objects. Thanks, Artem > Can anyone give any either formulas or rules of thumb when attempting > to get the numbers? I've seen performance where strong references > would be = max resolution under various cases, some where each window > (some off > screen) would take up max resolution size (6 monitors) etc. However > this is all non-scientific memory profiling so I don't know if I have > a correct understanding of when the buffers are set to what size. > > --Dmitriy > > CONFIDENTIALITY NOTICE: This message (including any attachments) is > intended solely for the use of GFI Group Inc., its affiliates and the > individual addressee(s). This message may contain confidential and/or > private information privileged to recipient or recipients named above. > If you are not the authorized recipient(s), or the employee or agent > responsible for delivering this message to the intended recipient(s), > please immediately notify the sender by e-mail at the address shown > above and delete this message from your system, other storage > mechanism and/or shred the document and any attachments. Any > unauthorized use, review or dissemination of this message in whole or > in part by persons or entities other than the intended recipient is strictly > prohibited. > GFI Group Inc. shall not be liable for the improper or incomplete > transmission of the information contained in this communication nor > for any delay in its receipt or damage to your system. >
