[syslinux] cptime/memdisk block size

[H. Peter Anvin]

On 09/21/2012 02:02 PM, Bernd Blaauw wrote:
> Is there any documentation available about what block size MEMDISK uses
> to load (big iso/harddisk) image files?
> 
> Experimenting with cptime.c32 on a Lexar Triton Jumpdrive (64GB, 170MB/s
> read in Windows, 150MB/s write in Windows) on bootable USB3.0 resulted
> in the following, depending on specified block size:
> * 2048 bytes --> 25MB/s
> * 2MB --> 61MB/s
> 
> It would be nice to know at which speed MEMDISK is loading, but a
> stopwatch seems a bit crude as only method.
> 

Note: cptime.c32 would have exactly the same limitation, so your "2MB"
there is really 63.5K.

	-hpa