Re: NSKeyedArchiver finishEncoding takes forever

[Markus Spoettl]

On Jun 18, 2008, at 12:35 PM, Michael Ash wrote:

I saw no mention in your message; have you profiled your app yet? Even
though the time is not being spent in your code, a profile can give
you an idea of what's taking up all this time, and may give you hints
as to how to make it go faster. First response to any speed problem
should always be to run Shark on it.

Regards
Markus


        0.0%    98.2%   CoreFoundation                                
_flattenPlist     
        0.0%    98.2%   CoreFoundation                                 
_flattenPlist    

        4.0%    27.9%   CoreFoundation                                       
CFEqual    

        0.2%    0.2%    CoreFoundation                                      
CFEqual     

        0.0%    0.0%    CoreFoundation                                      
_CFHash     
        0.0%    0.0%    CoreFoundation                                      
CFHash      

        0.0%    0.0%    CoreFoundation                                      
_CFHash     

        0.8%    5.4%    CoreFoundation                                       
CFEqual    

        0.0%    0.0%    CoreFoundation                                      
CFEqual     

        0.0%    0.0%    CoreFoundation                                      
CFHash      
        0.0%    0.0%    CoreFoundation                                      
_CFHash     



--
__________________________________________
Markus Spoettl

I did profile it but it's not my code that is slow. It's the call to [archiver finishEncoding] that's taking so long (see the Shark trace below. 0.0% 98.2% Foundation -[NSKeyedArchiver finishEncoding] 0.0% 98.2% CoreFoundation __CFBinaryPlistWriteToStream 0.0% 98.2% CoreFoundation _flattenPlist 0.0% 98.1% CoreFoundation _flattenPlist 0.0% 81.9% CoreFoundation CFSetAddValue 3.5% 57.0% CoreFoundation __CFSetFindBuckets2 2.6% 52.0% CoreFoundation __plistNumberEqual 1.1% 23.7% CoreFoundation __CFNumberEqual 10.3% 22.6% CoreFoundation CFNumberCompare 6.9% 11.9% CoreFoundation __CFNumberGetValue 3.8% 3.8% commpage [libSystem.B.dylib] __memcpy 0.8% 0.8% CoreFoundation dyld_stub_memmove 0.4% 0.4% libSystem.B.dylib memmove 0.4% 0.4% commpage [libSystem.B.dylib] __memcpy 0.0% 0.0% CoreFoundation __CFNumberGetValue 0.2% 0.2% CoreFoundation CFNumberCompare 4.9% 20.5% CoreFoundation CFNumberIsFloatType 15.6% 15.6% CoreFoundation CFNumberGetType 0.6% 0.6% CoreFoundation CFNumberGetType 0.4% 0.4% CoreFoundation __CFNumberEqual 1.2% 1.2% CoreFoundation CFNumberIsFloatType 0.0% 0.0% CoreFoundation __CFNumberHash 0.0% 0.0% CoreFoundation __CFStringHash 0.0% 24.7% CoreFoundation __CFSetGrow 1.5% 24.6% CoreFoundation __CFSetFindBuckets2 0.1% 0.1% CoreFoundation __plistNumberEqual 0.0% 0.0% CoreFoundation __CFNumberHash 0.3% 0.3% CoreFoundation __plistNumberEqual 0.0% 0.0% CoreFoundation __CFNumberHash 0.0% 16.0% CoreFoundation CFSetGetValue 1.2% 15.9% CoreFoundation __CFSetFindBuckets1b 1.1% 14.1% CoreFoundation __plistNumberEqual 2.0% 7.4% CoreFoundation CFNumberIsFloatType 0.2% 0.2% CoreFoundation CFNumberGetType 0.1% 0.1% CoreFoundation __CFNumberEqual 0.4% 0.4% CoreFoundation CFNumberIsFloatType 0.0% 0.0% CoreFoundation __CFStringHash 0.0% 0.0% CoreFoundation __CFNumberHash 0.1% 0.1% CoreFoundation __plistNumberEqual 0.0% 0.0% CoreFoundation __CFNumberHash 0.0% 0.1% CoreFoundation CFArrayAppendValue 0.0% 0.1% CoreFoundation CFDictionaryAddValue 0.0% 0.0% CoreFoundation _flattenPlist 0.0% 0.0% CoreFoundation CFSetGetCount 0.0% 0.0% CoreFoundation CFDictionaryGetValue 0.0% 0.0% CoreFoundation CFArrayGetCount 0.0% 0.0% CoreFoundation _CFArrayReplaceValues 0.0% 0.0% CoreFoundation __CFSetFindBuckets1b 0.0% 0.0% CoreFoundation CFDictionaryGetKeysAndValues 0.0% 0.0% CoreFoundation CFDictionaryAddValue 0.0% 0.0% CoreFoundation CFArrayAppendValue 0.0% 0.0% CoreFoundation CFSetAddValue 0.0% 0.0% CoreFoundation CFArrayGetCount 0.0% 0.0% CoreFoundation CFSetGetCount 0.0% 0.0% CoreFoundation CFDictionaryGetValue 0.0% 0.0% CoreFoundation CFStorageGetValues 0.0% 0.0% CoreFoundation CFDictionaryGetKeysAndValues

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