Xcode eats 100% CPU and more while typing
Xcode eats 100% CPU and more while typing
- Subject: Xcode eats 100% CPU and more while typing
- From: Axel Balley <email@hidden>
- Date: Mon, 4 Feb 2008 15:50:55 +0100
Hi list,
I've been experiencing a major problem in my XCode project since a few
days. It will randomly eat up loads of CPU while I'm editing a
document. It will take from 100 to 150% CPU at those moments. I
usually stop typing at that point because even text editing becomes
too laggy. Even though I'm not doing anything anymore, the CPU eating
still lasts about 20 seconds.
I've sampled the XCode process to see what could possibly go on, and
from the look of it XCode is having a hard time parsing my code. See
the end of my message for a sample. It happens that often now that I'm
considering switching to an external text editor.
Is this a known issue ? Any advice to stop that behavior ? I can't
afford to turn off Code Indexing as I need it too badly for code
navigation.
Thanks in advance.
Best,
Axel B.
Sampling process 1500 for 3 seconds with 1 millisecond of run time
between samples
Sampling completed, processing symbols...
Analysis of sampling Xcode (pid 1500) every 1 millisecond
Call graph:
1867 Thread_2503
1867 0x1fc6
1867 NSApplicationMain
1867 -[NSApplication run]
1867 -[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:]
1867 _DPSNextEvent
1867 BlockUntilNextEventMatchingListInMode
1867 ReceiveNextEventCommon
1867 RunCurrentEventLoopInMode
1867 CFRunLoopRunInMode
1867 CFRunLoopRunSpecific
1390 mach_msg
1390 mach_msg_trap
1390 mach_msg_trap
477 __CFRunLoopDoObservers
477 -[XCRunLoopMonitor _runLoopWillRun]
477 -[NSConditionLock lockWhenCondition:]
477 -[NSConditionLock
lockWhenCondition:beforeDate:]
477 -[NSCondition waitUntilDate:]
477
pthread_cond_timedwait_relative_np
477 _pthread_cond_wait
477
semaphore_timedwait_signal_trap
477
semaphore_timedwait_signal_trap
1867 Thread_2603
1867 thread_start
1867 _pthread_start
1867 auto_collection_thread(void*)
1867 pthread_cond_wait$UNIX2003
1867 __semwait_signal
1867 __semwait_signal
1867 Thread_2703
1867 thread_start
1867 _pthread_start
1867 fe_fragment_thread
1867 pthread_cond_wait$UNIX2003
1867 __semwait_signal
1867 __semwait_signal
1867 Thread_2803
1867 thread_start
1867 _pthread_start
1867 __NSThread__main__
1867 -[NSThread main]
1867 -[XCInvocationQueue
_processInvocationsInThreadSlotNumber:]
1867 pthread_cond_wait$UNIX2003
1867 __semwait_signal
1867 __semwait_signal
1867 Thread_2903
1867 thread_start
1867 _pthread_start
1867 __NSThread__main__
1867 -[NSThread main]
1867 +[PBXDebugSessionModule
_startCrashCatchingServiceThread]
1867 mach_msg
1867 mach_msg_trap
1867 mach_msg_trap
1867 Thread_2a03
1867 thread_start
1867 _pthread_start
1867 __NSThread__main__
1867 -[NSThread main]
1867 -[XCInvocationQueue
_processInvocationsInThreadSlotNumber:]
1867 -[XCInvocationQueue
_processNextInvocationInThreadSlotNumber:]
1867 -[NSInvocation invoke]
1867 __invoking___
1867 -[PBXProjectIndex _indexBackground:]
1867 -[PBXDevKitIndexingEngine
indexFileAtAbsolutePath:withSettings:]
1867 ObjcParse::translationUnit()
1867 ObjcParse::externalDeclaration()
1867
ObjcParse::declaration(DeclarationContext)
970
ObjcParse::initDeclaratorList(objc_object*, int, Token*)
970
ObjcParse::initDeclarator(objc_object*, int, Token*)
913
ObjcParse::declarator(objc_object*, Token**, Token*)
911
PBXIndexCParseActions::beginDeclarator(objc_object*, Token*)
910
TokenBuffer::tokenLine(Token*)
871
TokenBuffer::nextToken(Token*)
871
TokenBuffer::nextToken(Token*)
39
TokenBuffer::tokenLine(Token*)
1
PBXIndexCritical::PBXIndexCritical(PBXProjectIndex*)
1 -[PBXProjectIndex
beginCriticalSection]
1 -[XCRunLoopMonitor
blockRunLoopAfterIdleInterval:]
1 -[XCRunLoopMonitor
_waitForIdleInterval:blockMonitoredThread:]
1
CFAbsoluteTimeGetCurrent
1 gettimeofday
1 __gettimeofday
1 __gettimeofday
1 ObjcParse::nextToken()
1 Cpp::nextToken()
1 Cpp::nextToken0()
1
TokenBuffer::addToken(Token*)
1
TokenBuffer::addToken(Token*)
1
PBXIndexCParseActions::addTypeToken(TokenType, objc_object*)
1
PBXIndexCritical::PBXIndexCritical(PBXProjectIndex*)
1 -[PBXProjectIndex
beginCriticalSection]
1 -[XCRunLoopMonitor
blockRunLoopAfterIdleInterval:]
1 -[XCRunLoopMonitor
_waitForIdleInterval:blockMonitoredThread:]
1 +[NSThread
sleepUntilDate:]
1 __semwait_signal
1 __semwait_signal
57 ObjcParse::initializer()
35 ObjcParse::nextToken()
35 Cpp::nextToken()
35 Cpp::nextToken0()
31
Cpp::getInput(TokenBufferStream*, signed char)
29 Lex::nextToken()
28
Lex::lexNumberConstant(char)
13
StringTable::lookup(char const*, int)
13
StringTable::lookup(char const*, int)
9
Lex::lexNumberConstant(char)
6
TokenBuffer::allocToken(TokenType)
6
TokenBuffer::addToken(Token*)
6
TokenBuffer::addToken(Token*)
1 Lex::nextToken()
2
Cpp::getInput(TokenBufferStream*, signed char)
2
Cpp::putRelocToken(Token*)
2
TokenBuffer::addToken(Token*)
2
TokenBuffer::addToken(Token*)
1 Cpp::nextToken0()
1
TokenBuffer::addLargeToken(Token*)
1
TokenBuffer::addLargeToken(Token*)
21 ObjcParse::assignment()
21 ObjcParse::conditional()
21 ObjcParse::logicalOr()
21 ObjcParse::logicalAnd()
18
ObjcParse::bitwiseInclusiveOr()
17
ObjcParse::bitwiseExclusiveOr()
17
ObjcParse::bitwiseAnd()
17
ObjcParse::equality()
15
ObjcParse::relational()
15
ObjcParse::shift()
14
ObjcParse::additive()
14
ObjcParse::multiplicative()
13
ObjcParse::postfix()
13
ObjcParse::primary()
11
ObjcParse::nextToken()
10 Cpp::nextToken()
9 Cpp::nextToken0()
8
Cpp::getInput(TokenBufferStream*, signed char)
8
Lex::nextToken()
6
TokenBuffer::allocToken(TokenType)
5
TokenBuffer::addToken(Token*)
5
TokenBuffer::addToken(Token*)
1
TokenBuffer::allocToken(TokenType)
2
Lex::nextToken()
1
Cpp::nextToken0()
1 Cpp::handleAltivecContext()
1
Cpp::handleAltivecContext()
1
ObjcParse::nextToken()
2
PBXIndexCParseActions::doConstant(Token*)
2
PBXIndexCParseActions::doConstant(Token*)
1
ObjcParse::unary()
1
ObjcParse::unary()
1
Token::is_shiftOp()
1
Token::is_shiftOp()
1
ObjcParse::equality()
1
Token::is_relationalOp()
1
Token::is_relationalOp()
1
ObjcParse::bitwiseInclusiveOr()
3 ObjcParse::logicalAnd()
1 ObjcParse::initializer()
896
PBXIndexCParseActions::beginDeclaration(Token*, DeclarationContext)
896 TokenBuffer::tokenLine(Token*)
849 TokenBuffer::nextToken(Token*)
849
TokenBuffer::nextToken(Token*)
47 TokenBuffer::tokenLine(Token*)
1
ObjcParse::declarationSpecifiers(objc_object*, int*, int*, Token**)
1
ObjcParse::typeSpecifier(objc_object*)
1
PBXIndexCParseActions::addBasicType(objc_object*, Token*)
1
PBXIndexCritical::PBXIndexCritical(PBXProjectIndex*)
1 -[PBXProjectIndex
beginCriticalSection]
1 -[XCRunLoopMonitor
blockRunLoopAfterIdleInterval:]
1 -[XCRunLoopMonitor
_waitForIdleInterval:blockMonitoredThread:]
1 +[NSThread
sleepUntilDate:]
1 __semwait_signal
1 __semwait_signal
1867 Thread_2b03
1867 thread_start
1867 _pthread_start
1867 select$DARWIN_EXTSN
1867 select$DARWIN_EXTSN
1867 Thread_2c03
1867 thread_start
1867 _pthread_start
1867 __NSThread__main__
1867 -[NSThread main]
1867 -[NSUIHeartBeat _heartBeatThread:]
1867 -[NSConditionLock lockWhenCondition:]
1867 -[NSConditionLock lockWhenCondition:beforeDate:]
1867 -[NSCondition waitUntilDate:]
1867 pthread_cond_timedwait_relative_np
1867 _pthread_cond_wait
1867 semaphore_timedwait_signal_trap
1867 semaphore_timedwait_signal_trap
Total number in stack (recursive counted multiple, when >=5):
7 _pthread_start
7 thread_start
5 __semwait_signal
Sort by top of stack, same collapsed (when >= 5):
__semwait_signal 5603
mach_msg_trap 3257
semaphore_timedwait_signal_trap 2344
select$DARWIN_EXTSN 1867
TokenBuffer::nextToken(Token*) 1720
TokenBuffer::tokenLine(Token*) 86
TokenBuffer::addToken(Token*) 14
StringTable::lookup(char const*, int) 13
Lex::lexNumberConstant(char) 9
Sample analysis of process 1500 written to file /dev/stdout
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