On Wed, May 20, 2020 at 2:31 PM Tom Hughes <t...@compton.nu> wrote: > On 20/05/2020 14:23, James Read wrote: > > > I'm trying to use valgrind to track down a memory leak in my web > > crawling application. The problem is my application runs just fine > > without valgrind but when I run it under valgrind the program crashes > > before it has a chance to crawl any websites. Any ideas why this > > behaviour could happen? > > On the basis of the information supplied I'd say it was > caused by excess neutron flux in the discombobulator. > > Seriously, if you want anybody to actually try and answer > your question then you'll have to provide some actual > information like, what exactly it says... > > A typical run of my program gives the following output:
Redis server: :0 Mongo server: 127.0.0.1:27017 URL file: links/links-2 Max connections: 1000 Selected JUST CRAWLER MODE Parsed sites: 132 ^C Crawler thread exiting. Exiting. But with valgrind ./crawler -c I get the following output: ==415433== Memcheck, a memory error detector ==415433== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al. ==415433== Using Valgrind-3.15.0 and LibVEX; rerun with -h for copyright info ==415433== Command: ./crawler -c ==415433== Redis server: :0 Mongo server: 127.0.0.1:27017 URL file: links/links-2 Max connections: 1000 Selected JUST CRAWLER MODE ==415433== Warning: ignored attempt to set SIGKILL handler in sigaction(); ==415433== the SIGKILL signal is uncatchable setrlimit() failed ==415433== ==415433== HEAP SUMMARY: ==415433== in use at exit: 37,773 bytes in 92 blocks ==415433== total heap usage: 6,112 allocs, 6,020 frees, 460,106 bytes allocated ==415433== ==415433== LEAK SUMMARY: ==415433== definitely lost: 0 bytes in 0 blocks ==415433== indirectly lost: 0 bytes in 0 blocks ==415433== possibly lost: 0 bytes in 0 blocks ==415433== still reachable: 37,773 bytes in 92 blocks ==415433== suppressed: 0 bytes in 0 blocks ==415433== Rerun with --leak-check=full to see details of leaked memory ==415433== ==415433== For lists of detected and suppressed errors, rerun with: -s ==415433== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0) As you can see no Parsed sites: value message just crashes and burns. James Read > Tom > > -- > Tom Hughes (t...@compton.nu) > http://compton.nu/ >
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