Incredibly slow performance in NetBeans 4.0 when power supply is removed

I have a Dell Latitude D810 laptop running at 1.7 GHz with 1 Gig of RAM. NetBeans 4.0 runs just fine when the laptop is plugged in. When running off of the battery, NetBeans 4.0 slows to an unbelievably slow speed. It takes 10 seconds for a menu to be displayed, for example. Does anyone know why this is happening and how to correct it? Dell tecnical support claims it is a software issue.
Sincerely,
Scott McCormick

Sounds to me like the machine shifts the CPU to a lower speed to save power.
Most applications won't notice much difference as they spend most of their time waiting for the user but Netbeans (among others) is rather heavy and suffers as a result.
I fear the only solutions are to keep plugged in (which may be impractical) or to keep a lightweight editor as a backup for when you must use battery power.

Similar Messages

Satellite Pro S300L-105 - Whistle when power supply is removed

I recently bought a Satellite Pro S300L-105, it works normally except that it produces a slight, pointed whistle, witch can be heard when the power supply is removed. After less than 10 minutes using, I feel pain to my ears and brain and it becomes unusable.
I do not have any hearing problem or so. and I've never had such a problem when using any other computer.
What is it due to, and what can the manufacturer do for me?

Hi
Very common problem with all sorts of electronic equipment.
The whistle is caused by the high frequencies used by switch mode power supplies. It's a bit like a car where you have a rattle that happens only at certain speeds, and that speed creates a certain frequency that resonates with something in the car that then makes a noise. The same thing happens in the power supply.
When you remove the power the laptop enters a different power mode and starts running things on a lower voltage to save the battery power, and the way the power supply does this is by changing the frequency the power supply runs at. This frequency is just right to cause something to start vibrating within it, and as the frequencies are very high, you get a high frequency squeal. It may be so high in frequency other people can't hear it, which can be a problem when support or the shop are checking are it if you take it back.
Just like a car with a rattle, not every car of the same type will have the problem and the same goes for laptops. Someone may have a squeal only when on mains power for example, or only when the back light is on full or on dim, or they just don't notice it.
The manufacturers do a lot to try and dampen down anything that might vibrate and squeal but are not always successful.
You might find turning off power management settings help as the power supply is then forced to supply more power and so the frequency shifts to one that doesn't cause a squeal, but then you will find battery power doesn't last as long.
It could easily go away after a few weeks or months and never come back, or could get worse.
Mostly the noise isn't any sign of an impending problem or breakdown.
Getting the laptop replaced will most likely get you one that doesn't squeal.
Hope that information helps a bit, I know it can drive you mad when you get a high frequency squeal, and even madder when other people can't hear as their hearing isn't as good.
The same sorts of noise are now used in areas where children hang out causing trouble, a high frequency noise is blasted out at a frequency that most adults can no longer hear but children can as it drives them insane, so if you can here the squeal and others can't that is quite normal and shows if anything you have younger hearing or are indeed younger.
Regards
Phil
Message was edited by: Philip_l

Crash when power supply is removed

During the last week my computer has been doing something really weird. Sometimes when I disconnect the power supply, my computer will freeze up/get into the window that tels you that you need to restart the computer. I installed a new hard drive about 2 months ago and a new airport card like 2-3 weeks ago so that most likely is not the problem. The problem occurs wether or not I have charge left on my computer.

Hi Pedro,
The first point of call for strange power related problems (or any problem really is to reset the PMU, following the instructions on this page - http://docs.info.apple.com/article.html?artnum=14449
Regarding your other comments, regardless of your skill level (and to consider doing a hard drive swap in a 12 inch powerbook, you obviously have a fair bit) you may find that in re-assembly a cable has shorted somewhere or is not plugged in tightly, or something of that nature, so I would not immediately rule that out as a cause.

G580- Screen blacks out when power supply is not plugged in to the laptop

My laptop is just 3 months old and I am already having problems with it.
The laptop screen blacks out when i remove the power supply from it.
When plugged in , it starts workin again.
Whats the point of a laptop if i am not able to use it without plugging in??
I don kno what the probelm is. Can anyone help here pls...
Cheers
Vaish

Hi Vaish,
I’d like to help you with this issue as we can try to increase the Brightness of the screen from the power options while plugged in,
And then please if still the same we can try to uninstall the Lenovo Energy management and reinstall it back:
Lenovo Energy Management for Microsoft Windows 8
Lenovo Energy Management for Microsoft Windows 7
Hope the information helps. Let us know.
Regards
Soha
Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
Follow @LenovoForums on Twitter!

HELP!! my computer shuts down at random ONLY when power supply is attached

I still have the factory power supply. My problem just happens when ever it feels like it. I could be watching something on Quicktime or have Adium running. I have had it happen to me regardless if it was being used a little or a lot. But It ONLY happens when my power supply is attached. If I plug in my power supply to charge my computer it will shut off. I have read some other posts pointing to the problem being the logic board and that a few of the iBook G4's are subject. If this is a common problem with this computer model I think Apple should recall them and fix the problem. Any insight will be great.

Alright everyone it has been a week since I replaced my DC board and no problems. But we all know how Murphy's law works BUT I'm calling this one fixed. Thanks for your suggestions and help

T540p disconnect when power supply moves

My laptop becomes disconnected when my power supply is jiggled. This causes the laptop to dim and sometimes go into airplane mode. I was wondering if anyone has a similar problem and how they resolved it.
Is it the external power supply or the internal power connector? I don't want to order parts just to find out that I got the wrong one.
Model: 20BE004EUS
Power Supply Adapter: FRU PN 45N0264

This happens specifically when I move the plug that is connected to the jack from side to side, so I suspect it is the internal hardware of the laptop.
This looks to be the error:
https://forums.lenovo.com/t5/T400-T500-and-newer-T-series/T540p-Intermittent-power-supply-connector/...
It's not a big issue, and I can live with this occasional hiccup since I'm usually stationary when it is plugged in. It has not caused my significant problems, and if it is not a known serious issue, I want to avoid being separated from my device because I would have to get a technician fix this for me because it involves invasive disassembly.
Is there any danger in keeping this faulty hardware? Could having the faulty hardware limit the lifespan of my laptop significantly compared to having the faulty hardware swapped?

Slow performance, weird memory usage, hanging when closing safari tab

Hi, i recently noticed that my MacBoo Pro was with low performance after some hours of use.
I'm a heavy user, so I try to monitor what might be causing it. What i note was:
After restart (or fresh start), my computer was ok;
I use applications like adobe Lightroom and VMWare Fusion;
Then I star feeling like Safari was too slow to open pages - I thought it was the internet link first, but even local webpages are slow. I notice that when a click to close a tab, it take almost 2 sec to do it. The same when click to open any link on that page.
I start the activity monitor, but my proc usage are low. Then, I notice the (weird) memory usage:
Take a look at "memory used". I closed all applications before take this screenshot. i've trying to identify what is consuming this memory, but.. no success.
Anyone has any idea what can might be causing it?
My HW information:
all my apps are updated.

Memory usage was normal when you took that screenshot.
When you have the problem, note the exact time: hour, minute, second.
These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
The title of the Console window should be All Messages. If it isn't, select
          SYSTEM LOG QUERIES ▹ All Messages
from the log list on the left. If you don't see that list, select
          View ▹ Show Log List
from the menu bar at the top of the screen.
Each message in the log begins with the date and time when it was entered. Scroll back to the time you noted above.
Select the messages entered from then until the end of the episode, or until they start to repeat, whichever comes first.
Copy the messages to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
The log contains a vast amount of information, almost all of it useless for solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
Please don't post screenshots of log messages—post the text.
Some private information, such as your name, may appear in the log. Anonymize before posting.

Incredibly slow performance on early 2011 17-inch; what could it be?

I've got an early 2011 Macbook Pro 17-inch with the (at the time) bumped up 2.3 ghz CPU. Other than the CPU bump, it's pretty stock. Only 4 gigs of RAM, and the 750 gig hard drive running at 5400rpm. This is my second unit, the first having mysteriously died when I was traveling (just wouldn't even power on; apple store replaced it).
Due to a pretty heavy schedule since then (lots of travel, lots of work, and night classes), I haven't had much opportunity to do anything extreme on my fancy new computer. Despite that, I have noticed it often feels SLOW. Like, really slow. Stuff like taking 2 seconds just to switch between open apps, when you only have 2 apps open (and I'm not talking Final Cut and Photoshop, I'm talking Safari and Mail). Numbers was barely usable, sometimes dropping keystrokes as I tabbed between cells (and switching cells took over a second). Pages was frustratingly slow. It was bad. Finally, I reached a boiling point when I downloaded the latest Humble Indie Bundle, and Jamestown (a vertical-scrolling, 2D shooter) was unplayably slow. It wasn't running at a consistently low framerate, but it would basically freeze up for a second every 3 seconds or so. That's a lot of freezing up.
Today, I ran Geek Bench, and compared my score to a typical sandy bridge MBP 17". Typical 17" was in the neighborhood of 11,000. My MBP17" scored in the neighborhood of 2700! That is pretty bad!
Anyway, I'm trying to figure out where to even look. I ran the benchmark with all apps closed. It wasn't a fresh boot, but trust me I've rebooted plenty of times and it's been noticeably slow every time. I download Onyx a week ago and had it clear out all my caches, refresh my prebindings, run the periodic crons, and also did a repair disk permissions from Disk Utility. None of that has brought my score above 3000.
When I say I ran Geek Bench by itself, that's not entirely true. I always set up Activity Monitor to be a startup app, minimized to my dock. It's always plenty idle. There are no visible runaway processes or memory hogs. I do have it set ot display All Processes. I also ran memtest with 4 passes to check if my memory was bad, and it found no errors.
I have Windows 7 in boot camp, and when I tried playing Jamestown there, it was fine. I've played some older games (like Mass Effect 1 and 2) earlier in the year in boot camp, and it seemed fine. Granted, those were older games. I haven't done anything that pushed it. I would consider my Windows partition to be "untested" in this regard--it hasn't proven that it's slow or not. Jamestown was playable and didn't stutter...but honestly that game would run well on my 4 year old 2-core MBP, which would probably score in the upper 2000's on Geek Bench anyway. That said, OS X does have a stuttering problem that doesn't seem to be happening in Windows.
I'm at a loss, and was planning to schedule a Genius Bar appointment for this weekend, but I'm curious if anybody has any insight or experience with this? I'll update the thread with whatever I learn at Apple.

Update: After I got home, I decided to do some more random troubleshooting. First I closed everything, did another repair permissions, rebooted and confirmed the performance was still slow.
Then I took my laptop out of the Book Arc stand (holds it vertical) and power-cycled the machine, now without my external peripherals. The Geek Bench now reported 10235! So that is good news!
Interestingly, my battery (despite having been plugged in for weeks) was at 0%, so it seems like there might be a problem with the SMC. I reset it and I'll see how it goes. Doing a Geek Bench run each time, I put my computer back in its stand and hooked it up to the external monitor and keyboard.
I tried the Jamestown test, and I was sad to see that even with good geek bench numbers, it was still herky jerky. I removed the laptop from the Book Arc and played on the built-in keyboard and display, and the problems were gone. I hooked it back up to the external display, and things were fine, then, too.
I'm going to keep an eye on the CPU (by occasionally running geek bench) as well as the state of the battery. I've had the laptop out of its stand less than three weeks ago, which would imply that this slowdown problem should be isolated to no more than that period of time, but I have been observing slowness for longer than that.
As of now, I have nothing to show at the Genius Bar, so I'm cancelling.

DNS is incredibly slow on Lion 10.7.4 when connected to a .local domain

Im running Lion 10.7.4 and am connected to a .local domain. I've googled the problem and cant really work out if there is a fix or not.
I am also running VMWare Fusion on the same machine with Windows 7. neither Lion or Windows 7 are joined to the domain. The windows 7 VM browses the internet perfectly but lion is painfully slow.
My IP's are DHCP assigned and the search domain is xxxx.local
The VM is using bridged not NAT which is why the VM is perfming perfectly.
I know its something to do with the .local but cant change the TLD here so need a fix.
PLEASE HELPPPP

Im using Chrome and it happens in Safari and Firefox too. To be honest its not specifically web browsing. DNS is just ridiculously slow when connected to a .local domain.

MBP Shuts Down when Power cord is removed

My MBP almost instantly shuts down when the power cord is unplugged. The battery has been fully charged; I've tried restarting the laptop, holding down the power button for 10 seconds, and resetting the SMC.
What is going on??

I'm having the very same problem, and unless I find something on the discussions, I'm taking it into the Apple store as soon as possible.
This is my third battery, and each one seems to have a lifetime of about three months. This situation is different, though. The first one was bulging and shutting down when the battery was below 25% charged and the max battery capacity was dropping sharply. The second one was part of the exchange program, but I noticed it was starting to bulge and the max capacity was starting to drop (below ~60%).
This time, the max capacity is around 75% and I first noticed that it would shut down from sleep sporadically when on battery power. Then today, when I opened it, it shut down immediately. The battery was ~90% charged, but it wouldn't start up without the AC adapter. Now every time I unplug the adapter, the computer shuts down within 3 seconds. I also reset the SMC, which I think is the same process as resetting the PMU, perhaps they are equivalent terms or analogous devices, but the problem persists. There is no way to calibrate the battery since the computer won't run off it.
Unless there is something else to try, I recommend anyone with these problems should ask for a replacement battery.

MacBook won't start on battery/shuts down when power adapter is removed

Help & advice needed please.
My MacBook won't start without external power, it gives a whir then a click then nothing. Once started up, if I remove the external power it just shuts off.
The battery shows at 98% & charging. Coconut Battery shows the following:
Current battery charge 4126 (& increasing as I type)
Maximum battery charge 4200
Current battery capacity 4200
Original battery capacity 5200
80%
Battery loadcycles 111
Age of your Mac 6 months
Charger connected yes
Battery is charging yes
Does anyone have a clue why the Mac won't power itself on the battery when everything else seems like it works?
Cheers!

As of today, my MacBook and I have been together for 40 days. Yesterday, while I was happily surfing (on battery), it powered down with no warning. Okay, these things happen. I plugged it in, restarted, and all seemed to be fine. Battery was about 70%. I did other things on my other machines and when it was about 90%, unplugged it and everything was good. This morning after using it unplugged for 1.5 hours it did the same thing, but decided to only work with the power adapter, not on battery alone. When trying to boot without AC, it would try to spin the CD and then fall back into off. When on AC, if I pulled the adapter, it would last two seconds and go blank. I made an appt. with the Apple store (Fashion Show Mall, Las Vegas) for 3:20pm. I got there right at 3:20pm and the monitors showed I was 5th in line. Store was fairly packed, at least one patron at every display item. Monitors also said the next MacGenius appt. was "approx. 8:30pm." Glad I made an appt! I was served about 15 min. later, during which time the monitors had changed to "No more MacGenius appts. available today, please try tomorrow." However, one guy came by without an appt. and was told he would be put on standby and to come back in 30 min.
Once I explained my issue with my MacBook battery, my Genius tried one of his batteries. "I just want to make sure it's your battery and not your motherboard." My machine worked fine, so he said "No problem, I'll have you out of here in 10 minutes." He got me a brand new battery, tested it, and put my old one in a box on the rear counter with four others. He pulled the serial number from the "About this Mac" area, didn't need my receipt for purchase date or anything. I had even printed this page: http://www.apple.com/support/macbook_macbookpro/batteryupdate/ to use as ammunition, but didn't need it. He did approve highly of my dashboard widget "iStat pro", available here: http://islayer.com/.
So the battery issue is a very common problem, and one that Apple has tried to deal with as painlessly as possible for the consumer. My Genius did ask if the battery showed an "X" in the icon bar, and I said no. Just wouldn't run on battery. On the way out of the store, one of the 3 MacBooks, in fact the one closest to the door, had an "X" on the battery icon. When I unplugged the power, it shut down immediately! The moral of the story is to contact Apple immediately with problems and give them a chance to fix them. Hope this helps others.

MacBook Pro crash when power cord is removed

When the power cord is disconnected the computer shuts off within about 0 to 15 minutes.
The log files do not show any fatal errors that have caused the crashes.
the only error that keeps repeating is: com.apple.launchd: (com.apple.launchd.peruser.32710[614]) getpwuid("32710") failed
However, i do not believe this would cause the crashes.
Any ideas?

Rebecca ...
Try Resetting the System Management Controller (SMC)
And check here > Apple Portables: Troubleshooting MagSafe adapters

Satellite A200 won't shut down when power supply is connected

The Satellite A200 just shuts down, if the power cable is disconnected before shutting down. Otherwise the notebook shuts down and restarts immediately (max 5 seconds between shut down and restart).
Does anybody got the same strange problem?

Hi Thomas
You should definitely contact the ASP in your country. Maybe its something wrong with the power supply electronic on the notebooks motherboard.
As John said the replacement should be done for free because the A200 is a new series and the warranty should be valid.
Good luck

Slow Performance on QueueReciever.recieve() + MQ

Hi,
I have been wrecking my brains around this pickle for the last week or so and would appreciate any assistance I could get here.
Problem Description: Incredibly slow performance when invoking a QueueReciever.recieve() connecting to MQ server version 6
Benchmarks: 100-900ms per invocation
Configuration:
JVM: WS 6's own
MQ: 6.0
Application Server: WAS 6
Managed resources: Queue Connection Factory (queues are dynamically created)
Runtime artifacts: QueueConnectionFactory, QueueConnection, QueueConnection, QueueSession, QueueSender,
QueueReciever, TextMessage, in Queue out Queue
Scenario:
QueueSender created
QueueReciever created using a MessageSelector filtering on JMSCorrelationID
Message is sent to the in queue using QueueSender, embedded with a JMSCorrelationIDImmediately after, a QueueReciever.receive() is invoked listening on the out queue
Result: VERY slow return from the synchronous block on the receive().
Given: reply message is put on the out-queue after about 40ms by 3rd party application.
Again any assistance would be appreciated.
Message was edited by:
sg9aeee

Hi Wietse
Your RFC communication may be slow because limitations on the Gateway connection parameters.
Please check the Gateway profile parameters, like max_conn, blocksize etc
Thanks
Yatin Bhatt

Slow Performance Weeks after Encryption

I encrypted my organization's laptops several weeks ago and did not return them to users until after I could tell by device performance that the bulk encrypting task had completed. I have two users that are experiencing extremely slow performance on their systems. When the users are typing anything like a Word document, upon each keystroke they see the Windows 7 "circle" icon at the mouse cursor. This seems to come and go several times over the week, and every few days we are getting a request to resolve the issue but after restarting the behavior may not act up anymore.
I found a TID suggesting to change HKLM\SOFTWARE\Novell-FDE\Parameters\ThrottleEncryption to a lower level like Idle or BelowNormal. Is there anything else that I should also try? Thanks!

Yes, but nothing from Novell yet - I will keep pushing them forward and let you know if I get some results.
-j-
>>> Jim Koerner<[email protected]> 8.3.2013 15:29 >>>
Sounds like you have a SR going on this also. Have you heard anything on a
fix? Mine has been stagnant for a while and I just bumped it to see if
anything has been figured out or if more info is needed from my side. Hope
to here something soon. This is a pretty severe problem especially when it
happens multiple times to a machine.
Jim Koerner
Server - ZCM 11.2.2 MU1 and Internal Database on Win2008R2x64
Client - ZCM 11.2.2 MU1 on Win7SP1x64 and WinXPx32
"Jouko Oksanen" <Jouko.Oksanen_re@move_efore.fi> wrote in message
news:513713E9.13C8.00F6.0@move_efore.fi...
Hi,
We have had (maybe) similar issues with our FDE setup that FDE policy
assigned devices tend to loose the policy and start to do disk decryption
and suddenly get once again the policy back and start to encrypt again. This
could be found from "ZCM agent, Full disk encryption, about, Agents status,
Settings, on section "Emergency Recovery Information" you could see events
'Zone Changed' what according to Novell support meant that the policy was
"re-initialized / changed" even our policy counter have not changed = policy
got lost in some phase.
We are now suspecting that there is some issues with the policy service that
plays tricks on us.
-j-
>>> Jim Koerner<[email protected]> 20.2.2013 19:57
>>> >>>
In ZCC on the devices that you are having issues with look at the Emergency
Recovery tab and see if you have multiple listings in here that corresponds
to the slowness. If so your devices are decrypting and then re-encrypting.
Your mention of being asked to reboot leads me to believe that is what is
happening to you.
I have had a few SRs going on this one for a while and it got bumped to
backend but no info in a month or so.
Jim Koerner
Server - ZCM 11.2.2 MU1 and Internal Database on Win2008R2x64
Client - ZCM 11.2.2 MU1 on Win7SP1x64 and WinXPx32
"marklar23" wrote in message
news:[email protected]...
I encrypted my organization's laptops several weeks ago and did not
return them to users until after I could tell by device performance that
the bulk encrypting task had completed. I have two users that are
experiencing extremely slow performance on their systems. When the
users are typing anything like a Word document, upon each keystroke they
see the Windows 7 "circle" icon at the mouse cursor. This seems to come
and go several times over the week, and every few days we are getting a
request to resolve the issue but after restarting the behavior may not
act up anymore.
I found a TID suggesting to change
HKLM\SOFTWARE\Novell-FDE\Parameters\ThrottleEncryption to a lower level
like Idle or BelowNormal. Is there anything else that I should also
try? Thanks!
marklar23
marklar23's Profile: http://forums.novell.com/member.php?userid=5123
View this thread: http://forums.novell.com/showthread.php?t=464262

Incredibly slow performance in NetBeans 4.0 when power supply is removed

Similar Messages

Maybe you are looking for