Re: performance degrades with filesize

• To: Ethan Alpert <ethan@xxxxxxxxxxxx>
• Subject: Re: performance degrades with filesize
• From: Steve Emmerson <steve@xxxxxxxxxxxxxxxx>
• Date: Mon, 10 Sep 2001 13:08:27 -0600

Ethan,

>Date: Mon, 10 Sep 2001 12:42:47 -0600 (MDT)
>From: Ethan Alpert <ethan@xxxxxxxxxxxx>
>To: john@xxxxxxxxxxxxxxx
>Subject: Re: performance degrades with filesize

The above message contained the following:

> ... I can't be certain but it seems
> like the entire file is rewritten when the unlimited dimension increases.

The C implementation from the Unidata Program Center of the netCDF API
*does not* rewrite the entire netCDF file when the unlimited dimension
is increased -- effectively, the file is simply appended to.

I don't know about the Python interface.

Regards,
Steve Emmerson   <http://www.unidata.ucar.edu>

• Follow-Ups:
  • Re: performance degrades with filesize
    • From: John Galbraith

• References:
  • Re: performance degrades with filesize
    • From: Ethan Alpert