Re^2: memory sieve discovery

Here are some others:

651 /usr/lib/perl5/5.8.7/File/Path.pm line 121

582 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 143

2947 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 2303

1834 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 1420

1472 /usr/lib/perl5/site_perl/5.8.7/HTML/TableExtract.pm line 1020

747 /usr/lib/perl5/site_perl/5.8.7/HTTP/Message.pm line 9

849 /usr/lib/perl5/site_perl/5.8.7/LWP.pm line 10

709 /usr/lib/perl5/site_perl/5.8.7/LWP/Protocol/http.pm line 416

1210 /usr/lib/perl5/site_perl/5.8.7/OLE/Storage_Lite.pm line 11

1194 /usr/lib/perl5/site_perl/5.8.7/OLE/Storage_Lite.pm line 712

2202 /usr/lib/perl5/site_perl/5.8.7/Regexp/Common.pm line 36

3924 /usr/lib/perl5/site_perl/5.8.7/Spreadsheet/ParseExcel.pm line 1929

1793 /usr/lib/perl5/site_perl/5.8.7/Spreadsheet/ParseExcel/Utility.pm line 11

1433 /usr/lib/perl5/site_perl/5.8.7/Spreadsheet/WriteExcel/Formula.pm line 25

2465 /usr/lib/perl5/site_perl/5.8.7/Spreadsheet/WriteExcel/Workbook.pm line 25

1311 /usr/lib/perl5/site_perl/5.8.7/URI/http.pm line 6

1012 /usr/lib/perl5/site_perl/5.8.7/i686-linux/BerkeleyDB.pm line 1441

551 /usr/lib/perl5/site_perl/5.8.7/i686-linux/Compress/Zlib.pm line 16

253 /usr/lib/perl5/site_perl/5.8.7/i686-linux/HTML/Entities.pm line 150

523 /usr/lib/perl5/site_perl/5.8.7/i686-linux/HTML/HeadParser.pm line 74

The leading number in this sample is just the leak count within 1 run of the application -- a batch process. And as I say, I dont know what, if any, significance to attach. Perhaps Exporter is excused, for instance, if globalising is considered "leaky" by definition. And so on.

Pstack

Comment on Re^2: memory sieve discovery

Replies are listed 'Best First'.
Re^3: memory sieve discovery by Corion (Patriarch) on Jan 19, 2008 at 13:22 UTC
I think at least part of this report is exaggerated. Devel::LeakTrace::Fast says that most of its reporting starts at `INIT` time to circumvent problems with symbol table aliasing. But the "early" reports for example for HTTP::Message (line 9) come because HTTP::Message uses `require` instead of `use` to load `Carp.pm`. My guess is that all modules by Gisle Aas , most notably all modules comprising LWP, will follow the same allocation pattern (that is, URI::http, LWP). Most likely, others will also follow this pattern. I think to separate the wheat from the chaff of the leaks reported by Devel::LeakTrace::Fast, you will have to write code that runs a small loop exercising exactly the code where the leak is reported, and then watch that program to see whether it grows beyond bounds or not. As another example, line 25 of SpreadSheet::WriteExcel::Formula seems to be the `@ISA` assignment - while that's using up memory, it's not generally considered a leak because that memory is still reachable.	[reply] [d/l] [select]
Re^4: memory sieve discovery by Pstack (Scribe) on Jan 19, 2008 at 21:05 UTC
Going on what hipowls says above, and despite the inner concerns raised as a side issue, I believe Perl is squarely eliminated from my own more pressing problem. When I can return to cleaning up those 80 holes of mine I will be keeping your suggestions in mind, and will clearly have my hands full for a while. cheers	[reply]
Re^3: memory sieve discovery by grinder (Bishop) on Jan 19, 2008 at 12:10 UTC
File::Path is pure-Perl, no XS components, so I'm hard pressed to explain what its leak might be. You could install the latest version and if the problem persists, file a bug report. I have a feeling, however, that your problem is more likely to be a coding style that happens to prevent temporaries from being freed at an appropriately early moment. • another intruder with the mooring in the heart of the Perl	[reply]
Re^4: memory sieve discovery by Pstack (Scribe) on Jan 19, 2008 at 20:39 UTC
ok v2.04 now installed (over v1.07). It will be a week, however, before it is run again in the same context. I guess the same may apply to many others too!	[reply]
Re^3: memory sieve discovery by syphilis (Archbishop) on Jan 19, 2008 at 10:56 UTC
I wouldn't give any credence to a report that says that Math::BigInt leaks memory. Cheers, Rob	[reply]
Re^4: memory sieve discovery by Pstack (Scribe) on Jan 19, 2008 at 20:20 UTC
Sure seems unlikely. The full list for Math::BigInt is: 582 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 143 36 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 178 4 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 188 5 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 189 5 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 190 14 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 197 27 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 215 18 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 229 1 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 23 2947 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 2303 3 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 24 18 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 243 2 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 2437 2 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 2441 16 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 2503 546 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 2628 8 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 2639 27 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 268 38 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 29 53 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 325 46 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 366 104 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 431 22 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 448 112 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 519 144 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 627 55 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 661 321 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 850 52 /usr/lib/perl5/5.8.7/Math/BigInt.pm line 907 8 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 108 52 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 122 1 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 124 1 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 136 167 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 138 1834 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 1420 13 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 149 269 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 1626 57 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 1661 62 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 1697 13 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 1931 19 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 3 3 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 4 370 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 9 4 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 92 4 /usr/lib/perl5/5.8.7/Math/BigInt/Calc.pm line 93	[reply]