World: r3wp

even with my random generated data, the number of parts should be 
always the same.

But you can also parse the same data a few times. Every times it 
will be parsed in a different number of parts

end is a keyword!

The data I parse, are oftly in the 10s of MB and more.
With R2 I had no problems

>> start: now/time/precise loop 1000000 [parse "abc^/def^/ghi^/" 
[s: any [e: newline (append blk copy/part s e) s: | skip]]] now/time/precise 
- start
== 0:00:05.359

Hmm... tried to parse 4M chars a few times and r2 ran out of memory 
... r3 worked fine

There really is some problem:

R2:

>> start: now/time/precise loop 1000000 [parse "abc^/def^/ghi^/" 
"^/"] now/time/precise - start
== 0:00:00.933

R3:
==  0:00:04.259

I would curecode it, along with my example, and ask Carl about the 
possible cause ...

I did it already.

But your example does not show the real problem. just use my example 
and you will see why.

it shows very big time penalty ...

... which does not correspond to my manual parse example above ...

WTF? I get strange beeps when running your test code :-)

try running following code:

c: ""
 for i 0 255 1 [append c to-char i]

I get a beep here ....

each time I parse the dataset  ... I get it alternating between two 
lengths

I have no speaker at my pc.)

hmm, we are appending char into string ... who knows what it does 
internally :-) In charset, there are some escape/control codes, so 
maybe it causes a beep, I don't know :-)

I reported the strange beep into CC too ...

I copied the dataset before each parse ... very odd

Pekr, are you sure it's not just control chars printing to windows 
console causing beep?

could be a GC problem? Maybe above "beep" means there might be some 
memory leak?

maybe ... who knows ... should not beep ....

it surely is about control chars ...

why should it not beep?

Petr, most likely you get the beep when the string is printed to 
the windows console.

R2 does not beep (but it has its own console)

that is, windows does respect the BEL character.

ie. try print "^(07)"

yes, but I am denerved by that beeping :-)

and this is the windows console

don't include that char in your tests then, or don't print it out 
;)

Yes, it does so ... I will suggest the ticket dismissal ...

more unnerving is the non reproducible parse!

Graham - sqlab's code uses random sets, no? What is non reproducible 
exactly?

parse dataset "^/" returns a different value

for each consetutive run on the same dataset?

consecutive

length? parse data "^/"

do that a few times

>> parse "abc^/def^/ghi^/" "^/"
== ["abc" "def" "ghi"]

I get three value block for each run ...

on the large set ... not small sets

OK, I will try ...

he just generates a large set of random chars

strange ... I even tried to do those consecutive parse examples on 
the copy of data ... the result is still random ...

I thought that first parse might disrupt the input, which is used 
for the second parse too. But it does not work even for the copy 
of the data ...

Following code almost kills my DualCore notebook. View exe consumes 
almost 1GB of RAM :-)

c: ""
for i 0 255 1 [	append c to-char i ]
data: to-string array/initial 255 * 255 random c 
print length? data
m: parse copy data "^/"
print length? m

print length? data
i: parse copy data "^/"
print length? i

did you calculate how many strings you build ?

I tried that code in R2 and R3.....R3 took about twice the memory.

UNICODE strings plus unoptimised data structures may account for 
the difference.

Worth noting too perhaps: after trying the test three times, unsetting 
'c and 'm and recycling .... R3 got stuck trying to get into 'chat 

Possibly some screwed up garbage collection when recycling large 
elements? The failure is repeatable.

http://www.rebol.net/r3blogs/0307.html

A bit of work to do for those interested.

I looked at Ratio's import-email function on the blog and was wondering 
if R3 is supposed to have an import-email function? He claim's R2's 
import-email function is buggy and there is really an unfixed report 
in RAMBO.