[Glass] Awfully slow GRUtf8CodecStream

Dale Henrichs via Glass glass at lists.gemtalksystems.com
Wed Oct 15 11:27:46 PDT 2014


It looks like you've hit a known problem[1] and I just  haven't gotten
around to installing the bugfix in Grease... There is a useful discussion
about this in the Seaside31 issue #21[2] and for 3.2.2 we added a
primitive, but I have yet to add the primitive call to the Grease base[3].

The patches are in Smalltalk, so if you'd apply the patches and let me know
if they address your issue or not that'd be great.

I'm in the final throes of fixing a whole a pile of Metacello bugs[4], but
I should be able to get around to the Grease patch in a couple of days if
you want to wait ...


[1] https://github.com/GsDevKit/Grease/issues/2
[2] https://github.com/GsDevKit/Seaside31/issues/21
[3] https://github.com/glassdb/glass/issues/27

On Wed, Oct 15, 2014 at 9:39 AM, Mariano Martinez Peck via Glass <
glass at lists.gemtalksystems.com> wrote:

> Hi guys,
> I am rendering a html table of 100rows and 20 columns using Seaside. In
> Pharo, the "render" request of Seaside takes approx. 200ms. In Gemstone,
> same request takes more than 2 seconds....
> I have run a profiler and it looks the very very slow part is the
> #nextPutAll: of GRUtf8CodecStream, And more precisely, the Utf8 >> asString
> that ends up calling #changeClassTo:, which is the guy taking most of the
> time (60%!!!!!).
> Using a GRNullCodec decreases at least to 1 second. It is still far from
> the 200ms from Pharo, but it is better. GRLatin1GemStoneCodec does not even
> work.
> Another reason of the slowness in gemstone is that I don't have native
> code enabled in the seaside gems. I would like to do so, but then I cannot
> remote debug anymore.
> I am using Gemstone and Seaside 3.1.3.
> Is there any workaround or hack I can do to improve performance a bit?
> thanks,
> --
> Mariano
> http://marianopeck.wordpress.com
> _______________________________________________
> Glass mailing list
> Glass at lists.gemtalksystems.com
> http://lists.gemtalksystems.com/mailman/listinfo/glass
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