Cygwin Filesystem Performance degradation 1.7.5 vs 1.7.7, and methods for improving performance
Thu Oct 7 15:12:00 GMT 2010
On Thu, 7 Oct 2010, Derry Shribman wrote:
> Here's a quick guess on what the problem may be:
> For network shares (SAMBA), opening any handle, even a non-GENERIC_READ
> handle requires a round-trip to the SAMBA server over the network. This
> could easily be 1ms for LAN (and much much more for WAN). And only after
> you have the handle you can query it. So thats what the "open network
> file information" structures and APIs are: for network shares that the
> additional round-trip for CreateFile/CloseFile makes it slower.
If you folks haven't already seen the information presented here it might
be interesting. I know I found it useful for coding the applications we
use to move massive amounts of data and numbers of files around.
Staff Realtime Software Engineer
VITAL - Visual Simulation Systems
the best safety device in any aircraft is a well-trained crew...
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