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From:Ivan Novick Date:February 4 2009 11:01pm
Subject:RE: innodb_flush_method
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> -----Original Message-----
> From: MARK CALLAGHAN [mailto:mdcallag@stripped]
> Sent: Wednesday, February 04, 2009 2:46 PM
> To: Ivan Novick
> Cc: internals@stripped
> Subject: Re: innodb_flush_method
> Innodb calls fsync in os_file_flush() which does not reference
> UNIV_DO_FLUSH. os_file_flush() is called from fil_flush to try to
> fsync. Whether fsync is done is determined by the value of the my.cnf
> parameter innodb_flush_method and os_file_flush() looks at variables
> derived from that to figure out what to do.

Yeah but the calls to os_file_flush in both os_file_pwrite and os_file_write
are surrounded by #ifdef UNIV_DO_FLUSH

It seems that these are the 2 most standard cases of calling os_file_flush
and they are essentially dead code due to the UNIV_DO_FLUSH

Is it right?

Ivan Novick

innodb_flush_methodIvan Novick4 Feb
  • Re: innodb_flush_methodMARK CALLAGHAN4 Feb
    • RE: innodb_flush_methodIvan Novick5 Feb
      • Re: innodb_flush_methodVasil Dimov9 Feb
        • RE: innodb_flush_methodIvan Novick10 Feb