PixelGrabber is intermittently slow

Hi All,
PixelGrabber has some perfomance problems and there is a bug related to it here (http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4835595). However I am facing a bug where a offscreen image sometimes gets slow while I am running the PixelGrabber, this is the stack trace :
at java.awt.image.DirectColorModel.getsRGBComponentFromsRGB(DirectColorModel.java:305)
at java.awt.image.DirectColorModel.getRed(DirectColorModel.java:353)
at java.awt.image.DirectColorModel.getRGB(DirectColorModel.java:438)
at java.awt.image.PixelGrabber.setPixels(PixelGrabber.java:595)
at sun.awt.image.OffScreenImageSource.sendPixels(OffScreenImageSource.java:130)
at sun.awt.image.OffScreenImageSource.produce(OffScreenImageSource.java:161)
at sun.awt.image.OffScreenImageSource.addConsumer(OffScreenImageSource.java:37)
- locked <0x185b41c8> (a sun.awt.image.OffScreenImageSource)
at sun.awt.image.OffScreenImageSource.startProduction(OffScreenImageSource.java:51)
at java.awt.image.PixelGrabber.grabPixels(PixelGrabber.java:242)
- locked <0x185b4190> (a java.awt.image.PixelGrabber)
at java.awt.image.PixelGrabber.grabPixels(PixelGrabber.java:209)
Would somebody know if the intermittent slowness can be associated to the bug above ? ( in the bug it states it always happens) Has somebody ever had the same problem ?
Thanking you in advance
Ary Alves

Hi, there are ways to do it if you can live with certain restrictions.
            BufferedImage img=new BufferedImage(32,32,BufferedImage.TYPE_INT_ARGB);
            img.setRGB(10,15,0x01020304);   // a=1 r=2 g=3 b=4
            WritableRaster r=img.getRaster();
            DataBuffer db=r.getDataBuffer();
            if (db.getDataType() != DataBuffer.TYPE_INT)
                throw new IllegalStateException("Hey that must be a int!");
            if (db.getNumBanks() != 1)
                throw new IllegalStateException("Uh - Someone else got to do this job!");
            DataBufferInt dbi=(DataBufferInt)db;
            int[] data=dbi.getData();
            System.out.println(" Pixel (10,15) = "+Integer.toHexString(data[10+32*15]));
            // Test: No coy
            data[10+32*15]=0xaabbccdd;
            System.out.println(" Pixel (10,15) = "+Integer.toHexString(data[10+32*15]));As you see it works best if you can set the pixel format and if it only contains a single array of data (i.e. bank).

Similar Messages

PixelGrabber is too slow and has memory problems!

Have any of you figured out a way to get pixels from an Image
WITHOUT using PixelGrabber??
PixelGrabber is really slow -- is a memory hog -- and has other problems
that cause me to need another way to get pixels from an image.
Does anyone else have a way to get the pixels directly from an Image
without using PixelGrabber?
Ken Warner

Hi, there are ways to do it if you can live with certain restrictions.
            BufferedImage img=new BufferedImage(32,32,BufferedImage.TYPE_INT_ARGB);
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Login intermittently slow with ZCM agent AND Novell client

We continue to struggle with intermittently slow logins in our environment. In testing, we noticed that logins are very fast (10-20 seconds) when only the Novell Client is installed, and very fast (~10 seconds) when only the ZCM agent is installed. However, when they are both installed, logins slow down, sometimes to 1.5 minutes or longer.
We have checked DNS and rDNS, and they are both configured properly. SLP is working properly as demonstrated by the fast logins when only the client is installed. We use LDAP for user lookup, and it also works very fast to resolve user names (~ 1 second).
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Are there any specific settings (for the ZCM agent or the client itself) that might address this issue?

My apologies, I told you to remove the wrong thing.
I should have said NMAS instead of CASA.
I am just so used to saying CASA when talking about ZCM.
In regards to NMAS, you could simply rename "NWSSO.DLL" as a test.
If NMAS is installed which is tested by the existence of this DLL, then
a certain NMAS call is always made, which in some cases can take a long
time.
On 11/9/2010 12:06 PM, dshofkom33 wrote:
>
> craig_wilson;2042688 Wrote:
>> Try removing CASA from the device and see if that makes a difference.
>> A TID will be out on the issue soon.
>>
>> On 10/5/2010 4:36 PM, kjhurni wrote:
>>>
>>> Hmm, I will have to try that. I've only observed that with ZCM
>>> installed (with Novell Client 4.91 SP5 on XP) that the login time
>> goes
>>> from about 12-15 seconds to about 50-70 seconds.
>>>
>>> But I've not tried "just" the ZCM agent.
>>>
>>>
>>
>>
>> --
>> Craig Wilson - MCNE, MCSE, CCNA
>> Novell Knowledge Partner
>>
>> Novell does not officially monitor these forums.
>>
>> Suggestions/Opinions/Statements made by me are solely my own.
>> These thoughts may not be shared by either Novell or any rational
>> human.
>
> I removed CASA and now I cannot sign into ZCM. I get the "unable to
> login to network because the login credentials are incorrect" Windows
> Security Message. Any ideas?
>
>
Craig Wilson - MCNE, MCSE, CCNA
Novell Knowledge Partner
Novell does not officially monitor these forums.
Suggestions/Opinions/Statements made by me are solely my own.
These thoughts may not be shared by either Novell or any rational human.

Application intermittently slow

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Need more info :-)
When your query takes too long:
When your query takes too long ...
HOW TO: Post a SQL statement tuning request - template posting
HTH
Srini

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========
The first to bring me 1Gbps Fiber for $30/m wins!

XI to R/3 intermittent slowness

Hi experts,
We are calling an external web service in ECC6 via XI server.
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>I am unable to find any log to investigate further on this. Does anyone have any idea what could be wrong, or how I can find the log to this performance issue?
Few cents:
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First the basics: Dell XPS PC with a WMP54g PCI adapter
Apple iMac with a wireless airport adapter
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If I could provide any more information that would help you help me please ask. Thanks to all that respond. I know I've certainly left something out....the intermittency of my internet availablility just has me at ends..

Try this setting on XP Desktop:
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2) Reboot the computer…. You will see “found new hardware” …insert the CD for the adapter ….exit out of set up wizard….. install the drivers for the adapter
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Intermittently slow

G4 iMac slows intermittently. It acts like Time Machine is running but it's not. (When time machine is running it slows and movement becomes choppy.) I looked at the activity monitor and the green bars range near the top when it is slow, up and down otherwise. When slow the "Process Name" column shows
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Geoff K wrote:
It's an 80G drive, only 8.5 G available.
That's about the minimum you should have. 15% is better.
But unless you're running a whole lot of programs, requiring a lot of swap space, or adding/changing/replacing lots of very large files, that's probably not having a big effect.

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Solved!
Go to Solution.

Just done another speed test, (below)
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Connection Information
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Connected
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Upstream:
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VPI/VCI:
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199268 / 628
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I was helping someone this afternoon and was unable to find a fix so figured I'd ask here.
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Thoughts?

If Safari is getting very slow:
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http://reviews.cnet.com/8301-13727_7-57338784-263/free-dnscrypt-tool-enhances-ma c-web-security/?tag=mncol;txt
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For the past 3 or so weeks I have had days where my internet speed was as slow as my old dial up connection, some times even slower or there was no connection at all. I have also had days in between where it will work fine. My neighbor who also has Verizon DSL is having the same issue at the same time I am having these issues.
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Yes. I was having similar issues.
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Jason,
I'm sorry to read of the trouble(s) you're having: much worse than anything I'm experiencing
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Sincerely,
Jim

Jim Laing...
From what you describe, just maybe normal, depending what else is running in the background. (Extensions, Preferences, and so on)
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...Ron

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AP

Thanks JTF for the quick reply!
Since we were testing this problem, we did not have other users logged in and this was the only other consolidation running at the given time. We do have impact status rules in the system, but they are written only to execute on the last period of the fiscal to throw impact on the first period of the subsequent year ( Also, this is build with some conditions so it does not execute under all circumstances). We were consolidating the first period of the fiscal. Also, within rules, we tried adding timer code to see which parts take more time than others. We do not have Sub Consolidate in use as we are using default consolidation. So the 2 large sections with the rules, Sub Calculate and Sub translate yield to around 16 to 18 minutes when consolidating the top parent for a single period, when the overall consolidation would have taken either 1 hour 30 minutes or 40 minutes.
Thanks for your help!
Regards,
AP

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TV shows from iTunes sometimes take a long time to load, while content from Netflix & Hulu seem fine. Why does iTunes sometimen indicate that it may take over an hour to load a 45min TV show?

Netflix/Hulu adapts to the connection in order to stream instantly. iTunes content is fixed and will start once enough has loaded. The time it takes is dependent on your network.
720P requires minimum 6mbps for instant stream
1080p needs 8mbps
Check speedtest.net to verify
Interference can also play a role, check istumbler or netstumbler to verify
Male sure you are on your ISPs DNS (settings - network - configure DNS - automatic)

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