Re: (ITS#7607) Assertion triggers during many sequential transaction commits

Howard Chu wrote:

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...

What can i do to help investigating this issue? I'm not very familliar with lmdb sources so any suggestions on where to look would be appreciated!

I've installed a Win7 x64 VM here and compiled with gcc 4.8.0 and it works fine.

I've also installed Visual Studio 2012 Express and compiled with that, it's also working fine. Doesn't seem like there's an OpenLDAP bug here, must be a problem with your machine.

...

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2013/5/24 Howard Chu <hyc@symas.com mailto:hyc@symas.com>

 ilya.lukyanov@gmail.com <mailto:ilya.lukyanov@gmail.com> wrote:

     Full_Name: Ilya Lukyanov
     Version: 2.4.35
     OS: Windows 7 x64
     URL: ftp://ftp.openldap.org/__incoming/ <ftp://ftp.openldap.org/incoming/>
     Submission from: (NULL) (95.25.254.250)


     I've built lmdb from source distribution of OpenLDAP 2.4.35 under
     Windows 7 x64
     under Visual Studio 2012. All tests included into source distribution pass
     successfully.

     Then i'm executing my own test with code as follows:
     https://gist.github.com/__ilyalukyanov/5644971
     <https://gist.github.com/ilyalukyanov/5644971>
     And i'm allways get an asserion when executing near 32500-th
     mdb_txn_commit
     (line 2231 - assert(oldpg_txnid <= env->me_pglast);)
     I think this is a bug because if consider the scenario with separate
     usage of
     LightningDB under high write-load scenario, 32k commits is not enough.


 Your test runs fine on my Linux box. I don't currently have a Windows 7
 x64 test machine, won't be able to investigate this any time soon.