On Feb 15, 8:46 pm, Steve Holden <st...@holdenweb.com> wrote:
> Paul wrote:
> > Hi,
> > I currently have a webserver using BaseHttpServe that serves images
> > like this:
> > if self.path.endswith(".jpg"):
> > print(curdir + sep + self.path)
> > f = open(curdir + sep + self.path,"b")
> > self.send_response(200)
> > self.send_header('Content-type', 'image/jpg')
> > self.end_headers()
> > self.wfile.write(f.read())
> > f.close()
> > return
> > Whilst it works, it does take quite a while to load (approx 10secs for
> > a 4mb file even though its over the local connection) - does anyone
> > have any hints/tips for speeding it up?
>
> You could consider reading the file in smaller blocks and writing the
> output in a loop. That way the next block of the file can be read in
> while the network buffers are emptying.
>
> Just keep reading data and writing it until the number of data bytes you
> wrote is fewer than the number you tried to read.
>
> regards
> Steve
> --
> Steve Holden +1 571 484 6266 +1 800 494 3119
> Holden Web LLC http://www.holdenweb.com/
Thanks for these but they seem to have made no difference - it still
loads (visually) in chunks on the screen taking quite a while.
Intrestingly, with the looping idea I got it to print out on each loop
and some took a substantial amount of time to load compared to others
(I tried using 1500 and then 10,000 size chunks,with the code being:
if self.path.endswith(".jpg"):
print(curdir + sep + self.path)
f = open(curdir + sep + self.path,"rb")
self.send_response(200)
self.send_header('Content-type', 'image/jpg')
self.end_headers()
h = 10000
while h==10000:
g = f.read(10000)
h = len(g)
print h
self.wfile.write(g)
#self.wfile.write(f.read())
#shutil.copyfileobj(f,self.wfile)
f.close()
return
I also tried loading it to memory before it was requested but that
also made no difference.
If anyone's got any suggestions, I would be very greatful,
Paul
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