100% cpu usage

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george13
Posts: 82
Joined: Sat Jun 07, 2008 1:51 pm
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100% cpu usage

Post by george13 » Thu Jul 24, 2008 10:10 am

I am getting 100% cpu usage after using 'generate noise'. Is this a bug?
(With 'generate silence' or 'generate chirp' it goes back to 1-2% cpu usage.)

(Audacity 1.3.6a2, Mac OS X 10.4.11)

kozikowski
Forum Staff
Posts: 69357
Joined: Thu Aug 02, 2007 5:57 pm
Operating System: macOS 10.13 High Sierra

Re: 100% cpu usage

Post by kozikowski » Thu Jul 24, 2008 3:39 pm

Bugs are very specific events and they're a lot less common than everybody thinks. Some unintended (usually evil) behavior easily reproducible by the many hundreds of people who reported it.

So chances are, no.

When I do that, my CPU goes up into the high 70% range and then settles back down to normal. Doesn't yours come back down?

Koz

george13
Posts: 82
Joined: Sat Jun 07, 2008 1:51 pm
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Re: 100% cpu usage

Post by george13 » Thu Jul 24, 2008 6:31 pm

I don't know if this can be called a bug, maybe not, if no-one else has the problem, but I am not aware of any special configuration with my computer.

It happens when I start audacity, have an empty project and then go to generate noise. The noise track is generated o.k. but the cpu stays at 100%.

After some trying I found that it can happen also with other things from the generate menu, but not necessarily. Also, sometimes with noise it doesn't happen.

I try to upload two images of the output of 'Activity Monitor' one is for the case when cpu load goes back to normal:
audacity-benign.png
audacity-benign.png (45.35 KiB) Viewed 3950 times
, the other when it stays high:
audacity-evil.png
audacity-evil.png (49.06 KiB) Viewed 3948 times
The difference seems to be the last thread "ODManager", all other threads are obviously yielding cpu time.

kozikowski
Forum Staff
Posts: 69357
Joined: Thu Aug 02, 2007 5:57 pm
Operating System: macOS 10.13 High Sierra

Re: 100% cpu usage

Post by kozikowski » Fri Jul 25, 2008 12:04 am

<<<The difference seems to be the last thread "ODManager", all other threads are obviously yielding cpu time.>>>

...he said, secure in the knowledge that he was talking to a room full of system level programmers.

He wasn't.

I'll ping one of the forum administrators for you. They could use somebody who speaks OS-X and Process Level.

Koz

Gale Andrews
Quality Assurance
Posts: 41761
Joined: Fri Jul 27, 2007 12:02 am
Operating System: Windows 10

Re: 100% cpu usage

Post by Gale Andrews » Sat Jul 26, 2008 6:23 pm

george13 wrote:I am getting 100% cpu usage after using 'generate noise'. Is this a bug?
(With 'generate silence' or 'generate chirp' it goes back to 1-2% cpu usage.)
(Audacity 1.3.6a2, Mac OS X 10.4.11)
You're using an alpha (development) version of Audacity that is now about a month old. ODManager is the process for importing uncompressed files immediately then being able to play or edit them while the waveform summary data is still being loaded. I don't know why it should be called after generating in an empty project, but you should try again with the current a4 alpha:
http://www.audacity.homerow.net/index.p ... .3.6a4.dmg

If there is still a problem then we can look at it in terms of the current code which has changed significantly since the version you are using.

Gale
________________________________________FOR INSTANT HELP: (Click on Link below)
* * * * * Tips * * * * * Tutorials * * * * * Quick Start Guide * * * * * Audacity Manual

george13
Posts: 82
Joined: Sat Jun 07, 2008 1:51 pm
Operating System: Please select

Re: 100% cpu usage

Post by george13 » Sat Jul 26, 2008 9:11 pm

I've downloaded the latest version (1.3.6a4, nightly) yesterday. Unfortunately, it's still there. I found it's not only happening with the generate menu, but also when I start audacity and import a file (wav or mp3) by drag and drop. When importing the same file from the file-import menu cpu-usage doesn't go up. Sometimes the cpu usage goes up only after going to a menu with dialog.

Also I think it happens especially with very short pieces of audio (about 5 secs or so).

This is the thread that I believe is responsible for it (hope that helps):

248 Thread_1403
248 _pthread_body
248 ODManager::ODManagerHelperThread::callback(void*)
248 ODComputeSummaryTask::~ODComputeSummaryTask [in-charge deleting]()
248 ODComputeSummaryTask::~ODComputeSummaryTask [in-charge deleting]()

kozikowski
Forum Staff
Posts: 69357
Joined: Thu Aug 02, 2007 5:57 pm
Operating System: macOS 10.13 High Sierra

Re: 100% cpu usage

Post by kozikowski » Sat Jul 26, 2008 10:44 pm

<<<Gale Andrews>>>

You didn't get that note from me, did you? I was posting about this when one of our little forum squalls went through and I think took my message with it.

It's digital, what could go wrong?

Kozx

Gale Andrews
Quality Assurance
Posts: 41761
Joined: Fri Jul 27, 2007 12:02 am
Operating System: Windows 10

Re: 100% cpu usage

Post by Gale Andrews » Sun Jul 27, 2008 5:49 am

George13: I'll ask our Google Summer of Code student developing "On Demand" for his opinion. If you go Audacity > Preferences > Import / Export and select "Make a copy of uncompressed audio...", does it make any difference?
kozikowski wrote:You didn't get that note from me, did you? I was posting about this when one of our little forum squalls went through and I think took my message with it. Koz
No I didn't get the PM you said you were going to send, I just happened to be looking. Can you still see your message in "Sent" or "Outbox"?

Gale
________________________________________FOR INSTANT HELP: (Click on Link below)
* * * * * Tips * * * * * Tutorials * * * * * Quick Start Guide * * * * * Audacity Manual

george13
Posts: 82
Joined: Sat Jun 07, 2008 1:51 pm
Operating System: Please select

Re: 100% cpu usage

Post by george13 » Sun Jul 27, 2008 10:16 am

No, "Make a copy of uncompressed audio..." doesn't make a difference. In fact, I had this on all the time. Turning it off doesn't make a difference either.

While I'am at it, I also got a crash that's in the "On Demand" part: (Sorry for all the bad news): This is happening when choosing "File - Export" and there Format: "Other FFmpeg-Compatible Files" (the last one) as soon as one clicks on the "options ..." button.

Code: Select all

Date/Time:      2008-07-27 12:02:10.932 +0200
OS Version:     10.4.11 (Build 8S165)
Report Version: 4

Command: Audacity
Path:    /Applications/Audio/audacity1.3.6a4/Audacity.app/Contents/MacOS/Audacity
Parent:  WindowServer [71]

Version: 1.3.4 (1.3.4)

PID:    527
Thread: 0

Exception:  EXC_BAD_ACCESS (0x0001)
Codes:      KERN_INVALID_ADDRESS (0x0001) at 0xff7ac4fc

Thread 0 Crashed:
0   <<00000000>> 	0xff7ac4fc 0 + -8731396
1   net.sourceforge.audacity       	0x002700a4 ODPCMAliasBlockFile::IsSummaryBeingComputed() + 35488
2   net.sourceforge.audacity       	0x00279744 ODPCMAliasBlockFile::IsSummaryBeingComputed() + 74048
3   net.sourceforge.audacity       	0x00238154 BrowserFrame::~BrowserFrame [in-charge deleting]() + 7424
4   com.apple.NavigationServices   	0x931eddb8 InvokeNavEventUPP + 24
5   com.apple.NavigationServices   	0x931edd68 TNavClient::Event(long) const + 108
6   com.apple.NavigationServices   	0x931f8698 TBrowseDialog::DoMouseEvent(OpaqueEventRef*) + 316
7   com.apple.NavigationServices   	0x931f6054 TBrowseDialog::EventWindowHandler(OpaqueEventHandlerCallRef*, OpaqueEventRef*) + 1172
8   com.apple.NavigationServices   	0x931f5b90 TBrowseDialog::EventWindowHandlerDispatch(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 80
9   com.apple.HIToolbox            	0x932aa934 DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 692
10  com.apple.HIToolbox            	0x932aa08c SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 372
11  com.apple.HIToolbox            	0x932b0e90 SendEventToEventTarget + 40
12  com.apple.HIToolbox            	0x9333d230 HandleMouseEventForWindow(OpaqueWindowPtr*, OpaqueEventRef*, unsigned short) + 236
13  com.apple.HIToolbox            	0x934a03e8 HandleMouseEvent(OpaqueEventRef*) + 368
14  com.apple.HIToolbox            	0x932b11fc ToolboxEventDispatcherHandler(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 496
15  com.apple.HIToolbox            	0x932aab84 DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 1284
16  com.apple.HIToolbox            	0x932aa08c SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 372
17  com.apple.HIToolbox            	0x932b0e90 SendEventToEventTarget + 40
18  com.apple.HIToolbox            	0x932f1c04 ToolboxEventDispatcher + 92
19  com.apple.HIToolbox            	0x93390a10 TryEventDispatcher + 108
20  com.apple.HIToolbox            	0x93390668 GetOrPeekEvent + 304
21  com.apple.HIToolbox            	0x933904c0 GetNextEventMatchingMask + 440
22  com.apple.HIToolbox            	0x93390244 WNEInternal + 152
23  com.apple.HIToolbox            	0x93390198 WaitNextEvent + 76
24  com.apple.NavigationServices   	0x93200b3c TBrowseDialog::EventLoop() + 76
25  com.apple.NavigationServices   	0x931f7af4 TBrowseDialog::StartDialog() + 388
26  com.apple.NavigationServices   	0x931e5a14 _NavDialog::Run() + 132
27  com.apple.NavigationServices   	0x931e5948 NavDialogRun + 64
28  net.sourceforge.audacity       	0x002394e8 BrowserFrame::~BrowserFrame [in-charge deleting]() + 12436
29  net.sourceforge.audacity       	0x0009d298 EnvPoint::WriteXML(XMLWriter&) + 18676
30  net.sourceforge.audacity       	0x000a0d2c EnvPoint::WriteXML(XMLWriter&) + 33672
31  net.sourceforge.audacity       	0x000e2030 LangHash::operator[](wxString const&) + 14172
32  net.sourceforge.audacity       	0x001cb73c wxAboutDialogCreditItemsListNode::~wxAboutDialogCreditItemsListNode [in-charge deleting]() + 5500
33  net.sourceforge.audacity       	0x001306ac AudacityPrintout::~AudacityPrintout [in-charge deleting]() + 2612
34  net.sourceforge.audacity       	0x004d49a8 wxStandardPaths::~wxStandardPaths [in-charge]() + 2024
35  net.sourceforge.audacity       	0x004d4ba8 wxStandardPaths::~wxStandardPaths [in-charge]() + 2536
36  net.sourceforge.audacity       	0x004d4f84 wxStandardPaths::~wxStandardPaths [in-charge]() + 3524
37  net.sourceforge.audacity       	0x003d7d8c non-virtual thunk [nv:-452] to wxListBoxBase::~wxListBoxBase [in-charge deleting]() + 10764
38  net.sourceforge.audacity       	0x0032c440 wxListCtrl::wxListCtrl[not-in-charge]() + 13136
39  net.sourceforge.audacity       	0x00361d64 wxClassInfo::IsKindOf(wxClassInfo const*) const + 32180
40  com.apple.HIToolbox            	0x932aa934 DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 692
41  com.apple.HIToolbox            	0x932aa08c SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 372
42  com.apple.HIToolbox            	0x932b0e90 SendEventToEventTarget + 40
43  com.apple.HIToolbox            	0x933297e8 SendHICommandEvent(unsigned long, HICommand const*, unsigned long, unsigned long, unsigned char, OpaqueEventTargetRef*, OpaqueEventTargetRef*, OpaqueEventRef**) + 380
44  com.apple.HIToolbox            	0x933596a0 SendMenuItemSelectedEvent + 136
45  com.apple.HIToolbox            	0x933595a8 FinishMenuSelection(MenuData*, MenuData*, MenuResult*, MenuResult*, unsigned long, unsigned long, unsigned long, unsigned char) + 144
46  com.apple.HIToolbox            	0x93340a54 MenuSelectCore(MenuData*, Point, double, unsigned long, OpaqueMenuRef**, unsigned short*) + 404
47  com.apple.HIToolbox            	0x9334053c MenuSelect + 100
48  net.sourceforge.audacity       	0x00357304 wxMacToolTipTimer::Notify() + 10084
49  net.sourceforge.audacity       	0x002edffc wxwxAccelListNode::~wxwxAccelListNode [in-charge deleting]() + 11916
50  com.apple.HIToolbox            	0x932aa934 DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 692
51  com.apple.HIToolbox            	0x932aa08c SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 372
52  com.apple.HIToolbox            	0x932b0e90 SendEventToEventTarget + 40
53  com.apple.HIToolbox            	0x934a03fc HandleMouseEvent(OpaqueEventRef*) + 388
54  com.apple.HIToolbox            	0x932b11fc ToolboxEventDispatcherHandler(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 496
55  com.apple.HIToolbox            	0x932aab84 DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 1284
56  com.apple.HIToolbox            	0x932aa08c SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 372
57  com.apple.HIToolbox            	0x932b0e90 SendEventToEventTarget + 40
58  net.sourceforge.audacity       	0x002ebb1c wxwxAccelListNode::~wxwxAccelListNode [in-charge deleting]() + 2476
59  net.sourceforge.audacity       	0x002ebc0c wxwxAccelListNode::~wxwxAccelListNode [in-charge deleting]() + 2716
60  net.sourceforge.audacity       	0x00307f64 wxDropSourceBase::~wxDropSourceBase [in-charge]() + 276
61  net.sourceforge.audacity       	0x003a6a80 wxDisplayModule::~wxDisplayModule [in-charge]() + 528
62  net.sourceforge.audacity       	0x0037a65c wxANIDecoder::Clone() const + 1004
63  net.sourceforge.audacity       	0x00476544 wxHashTable::~wxHashTable [in-charge]() + 3124
64  net.sourceforge.audacity       	0x000034b4 0x1000 + 9396
65  net.sourceforge.audacity       	0x000023cc 0x1000 + 5068
66  net.sourceforge.audacity       	0x000020d0 0x1000 + 4304

Thread 1:
0   libSystem.B.dylib              	0x9000b348 mach_msg_trap + 8
1   libSystem.B.dylib              	0x9000b29c mach_msg + 60
2   com.apple.CoreFoundation       	0x907de9ac __CFRunLoopRun + 832
3   com.apple.CoreFoundation       	0x907de2b0 CFRunLoopRunSpecific + 268
4   com.apple.audio.CoreAudio      	0x91459524 HALRunLoop::OwnThread(void*) + 264
5   com.apple.audio.CoreAudio      	0x914592c4 CAPThread::Entry(CAPThread*) + 96
6   libSystem.B.dylib              	0x9002bd08 _pthread_body + 96

Thread 2:
0   libSystem.B.dylib              	0x900411f8 mach_wait_until + 8
1   libSystem.B.dylib              	0x90040fc4 nanosleep + 388
2   net.sourceforge.audacity       	0x0000f95c AudioThread::callback(void*) + 124
3   libSystem.B.dylib              	0x9002bd08 _pthread_body + 96

Thread 3:
0   libSystem.B.dylib              	0x90054388 semaphore_timedwait_signal_trap + 8
1   libSystem.B.dylib              	0x90070be8 pthread_cond_timedwait_relative_np + 556
2   ...ple.CoreServices.CarbonCore 	0x90bf93f4 TSWaitOnSemaphoreCommon + 176
3   ...ickTimeComponents.component 	0x9a138804 ReadSchedulerThreadEntryPoint + 5300
4   libSystem.B.dylib              	0x9002bd08 _pthread_body + 96

Thread 4:
0   libSystem.B.dylib              	0x90054388 semaphore_timedwait_signal_trap + 8
1   libSystem.B.dylib              	0x90070be8 pthread_cond_timedwait_relative_np + 556
2   ...ple.CoreServices.CarbonCore 	0x90bf93f4 TSWaitOnSemaphoreCommon + 176
3   ...ple.CoreServices.CarbonCore 	0x90c03e9c AIOFileThread(void*) + 520
4   libSystem.B.dylib              	0x9002bd08 _pthread_body + 96

Thread 5:
0   net.sourceforge.audacity       	0x00262820 ODComputeSummaryTask::~ODComputeSummaryTask [in-charge deleting]() + 3340
1   net.sourceforge.audacity       	0x00262fe8 ODManager::ODManagerHelperThread::callback(void*) + 20
2   libSystem.B.dylib              	0x9002bd08 _pthread_body + 96

Thread 6:
0   libSystem.B.dylib              	0x9002f08c kevent + 12
1   com.apple.DesktopServices      	0x92b07e50 TFSNotificationTask::FSNotificationTaskProc(void*) + 56
2   ...ple.CoreServices.CarbonCore 	0x90bc6794 PrivateMPEntryPoint + 76
3   libSystem.B.dylib              	0x9002bd08 _pthread_body + 96

Thread 7:
0   libSystem.B.dylib              	0x9002c3c8 semaphore_wait_signal_trap + 8
1   libSystem.B.dylib              	0x90030eac pthread_cond_wait + 480
2   ...ple.CoreServices.CarbonCore 	0x90bc6984 MPWaitOnQueue + 224
3   com.apple.DesktopServices      	0x92b084cc TNodeSyncTask::SyncTaskProc(void*) + 116
4   ...ple.CoreServices.CarbonCore 	0x90bc6794 PrivateMPEntryPoint + 76
5   libSystem.B.dylib              	0x9002bd08 _pthread_body + 96

Thread 0 crashed with PPC Thread State 64:
  srr0: 0x00000000ff7ac4fc srr1: 0x100000004200f030                        vrsave: 0x0000000000000000
    cr: 0x22022234          xer: 0x0000000000000000   lr: 0x000000000026bbd8  ctr: 0x00000000ff7ac4ff
    r0: 0x00000000ff7ac4ff   r1: 0x00000000bfffd0b0   r2: 0x000000000ad9c6e0   r3: 0x0000000000000000
    r4: 0x0000000000000000   r5: 0x000000000c50ff78   r6: 0x0000000000000001   r7: 0x0000000000000008
    r8: 0x0000000000000008   r9: 0x00000000009a7eac  r10: 0x000000000c600206  r11: 0x0000000042022232
   r12: 0x00000000ff7ac4ff  r13: 0x00000000bfffd4ec  r14: 0x00000000bfffd4fc  r15: 0x00000000bfffd50c
   r16: 0x00000000bfffd51c  r17: 0x00000000bfffd52c  r18: 0x00000000bfffd53c  r19: 0x00000000bfffd568
   r20: 0x00000000bfffd578  r21: 0x00000000bfffd588  r22: 0x00000000bfffd598  r23: 0x00000000bfffd168
   r24: 0x00000000bfffd2d0  r25: 0x0000000000aabba4  r26: 0x00000000bfffd54c  r27: 0x00000000bfffd55c
   r28: 0x00000000bfffd2d0  r29: 0x0000000000aafd00  r30: 0x000000000c510370  r31: 0x000000000026bba4

Binary Images Description:
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  0xc9c000 -   0xc9efff com.apple.textencoding.unicode 2.0	/System/Library/TextEncodings/Unicode Encodings.bundle/Contents/MacOS/Unicode Encodings
  0xf4c000 -   0xf4efff net.culater.SIMBL 0.2 (8)	/Library/InputManagers/SIMBL/SIMBL.bundle/Contents/MacOS/SIMBL
  0xff3000 -   0xff3fff MultiInspectorFreeSys.dylib 	/Library/Audio/Plug-Ins/Components/MultiInspectorFree.component/Contents/MacOS/MultiInspectorFreeSys.dylib
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 0x6518000 -  0x6519fff dj_flanger_1438.so 	/Library/Audio/Plug-Ins/LADSPA/dj_flanger_1438.so
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Model: PowerMac8,1, BootROM 5.2.2f4, 1 processors, PowerPC G5  (3.0), 1.6 GHz, 2 GB
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mchinen
Posts: 19
Joined: Sun Jul 27, 2008 1:33 pm
Operating System: Please select

Re: 100% cpu usage

Post by mchinen » Sun Jul 27, 2008 2:01 pm

Hi george13,

I'm the student developer Gale was referring to.

Thanks for posting those screenshots; I was able to eliminate a minor bug. The ODManager's thread is not supposed to be created until it is needed. It was being created for things like "generate noise", when it shouldn't. However, when it is running, it sleeps very often if it is idle. When I did the steps "Open Audacity/Generate Noise (3s)" My CPU usage was around 6% once the noise was created, after a 60% peak while the noise was being generated, so it looks more like Koz's.

I noticed you also had an ODComputeSummaryTask running in the "benign" png. This usually means you loaded a file with import/open/dragndrop, although it looks like you're suggesting this is the idle state before you anything in audacity. If you haven't loaded some files and yet the ODComputeSummaryTask is running, then this definitely is a bug; it would be a big help if you could verify your steps for me.

While the file loads, have you been seeing the striped blocks?

Also, how fast is your computer?

Anyway, I fixed this bug and am checking in today.

Looking into this export crash.

Thanks for you help. I'll be watching this thread today.

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