This is an old(ish) thread but I wanted to follow-up since I've been
dealing with SMB2 and GIS stuff recently and came across this in my
searches. Some of this is specific to reading files from a Samba
server (linux, typically), but modern Windows file servers have a
similar problem. A couple of
On Mon, Apr 29, 2013 at 10:55 AM, Even Rouault
wrote:
> Selon Radim Blazek :
>
>> On Mon, Apr 29, 2013 at 10:23 AM, Even Rouault
>> wrote:
>> > I'm also wondering if setting unconditionnaly VSI_CACHE might not have some
>> > theoretical penalty for fast access storage when there is a lot of seeki
Selon Radim Blazek :
> On Mon, Apr 29, 2013 at 10:23 AM, Even Rouault
> wrote:
> > I'm also wondering if setting unconditionnaly VSI_CACHE might not have some
> > theoretical penalty for fast access storage when there is a lot of seeking
> and
> > reading by small amounts (I believe this is the t
On Mon, Apr 29, 2013 at 10:23 AM, Even Rouault
wrote:
> I'm also wondering if setting unconditionnaly VSI_CACHE might not have some
> theoretical penalty for fast access storage when there is a lot of seeking and
> reading by small amounts (I believe this is the typical I/O pattern when you
> disp
> Do you prefer VSI cache for buffering to implementation of another
> buffering mechanism as long term solution?
>From my understanding of the code (FrankW is the author of VSI Cache), VSI
>cache
is currently both a cache and buffering mechanism. There's perhaps a small
penalty of having the ca
On Sun, Apr 28, 2013 at 9:26 PM, Even Rouault
wrote:
> Le dimanche 28 avril 2013 20:40:12, Radim Blazek a écrit :
>> Hello,
>> I am working on #6448 QGIS issue - Extremely slow shapefile reading
>> over network. You can find my latest observations in
>> http://hub.qgis.org/issues/6448#note-19
>>
>
Le dimanche 28 avril 2013 20:40:12, Radim Blazek a écrit :
> Hello,
> I am working on #6448 QGIS issue - Extremely slow shapefile reading
> over network. You can find my latest observations in
> http://hub.qgis.org/issues/6448#note-19
>
> Long story short, OGR does not buffer I/O and Windows does
Hello,
I am working on #6448 QGIS issue - Extremely slow shapefile reading
over network. You can find my latest observations in
http://hub.qgis.org/issues/6448#note-19
Long story short, OGR does not buffer I/O and Windows does not always
cache network files.
I have few questions for OGR developer
