[gs-devel] Performance comparison versions 7.07 and 8.62

[Ralph Giles]

On 20-May-08, at 10:07 PM, James Dean wrote:

> I have been using GhostScript to convert PostScript to PDF on an HP- 
> UX ia64 machine.
>
> Using 7.07, I have been getting pages rates of 110 pages/sec, but  
> for documents over 5,000 pages this rate degrades to 4 pages/sec  
> for a 50,000 page document.

My first guess would be that this is the result of a memory leak.  
What happens to memory consumption over the course of this job?

> Trying 8.62 on the same documents, I get linear performance, but at  
> a much slower rate, 30 pages/sec.

Recent releases do a lot more work, and so I'd expect a slower but  
more constant rate. That's a surprisingly large slowdown though.  
Again, I'd check memory consumption.

  -r