[asterisk-dev] [Code Review] 2727: Improve disk writes for wav49

Matt Jordan reviewboard at asterisk.org
Wed Jul 31 17:43:47 CDT 2013

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Review request for Asterisk Developers.

Bugs: ASTERISK-19595

Repository: Asterisk


Writing to a wav49 looks a lot like this:
 * Write GSM frame to end of file
 * Seek to end of file
 * Seek to header
 * Update file size
 * Seek to end of file
 * Repeat

This pattern negates any attempt to use the stdio buffering setup in ast_writefile(). It also results in many small writes that require a seek going to the disk each second which translates to terrible disk performance when there are multiple wav49 files being written at the same time.


  /trunk/formats/format_wav_gsm.c 395904 

Diff: https://reviewboard.asterisk.org/r/2727/diff/



Matt Jordan

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