On Oct 10, 2009, at 2:54 PM, jon wrote:
i was using a notification that was standard that told me when the
page finished loading... does this have the same sort of
mechanism? (or need it) when fetching the page?
NSURLConnection has a delegate object you can set, which will get
called
i was using a notification that was standard that told me when the
page finished loading... does this have the same sort of mechanism?
(or need it) when fetching the page?
On Oct 10, 2009, at 3:26 PM, Jens Alfke wrote:
If you can't use a feed, use NSURLRequest to fetch the page
__
On Oct 10, 2009, at 1:01 PM, jon wrote:
drives me crazy the documentation... it is there, but you have
to know what to look for before you ever go down the correct tangent.
There's certainly a lot of stuff, and it takes a while to learn what's
in there. :/ The good part is that all th
that looks promising...
thanks,
Jon.
On Oct 10, 2009, at 3:26 PM, Jens Alfke wrote:
You can check the "Last-Modified" and "ETag" headers in the
NSHTTPURLResponse object and compare them to what you got last time;
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On Oct 10, 2009, at 12:41 PM, jon wrote:
oh... that is good to know... hmm, well it looks like i need to
go lower in the mechanism, stuff i don't know anything about, so
i'll do research on the best way to get the info off the website at
a lower level.
RSS or Atom feeds are often us
On Oct 10, 2009, at 3:35 PM, Thomas Wetmore wrote:
Please take this off list.
That's an awfully presumptuous demand, don't you think?
It's a relevant and interesting Cocoa topic. I've been following it
with interest and it's quite obvious others have as well.
--
I.S.
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On Sat, Oct 10, 2009 at 2:56 PM, jon wrote:
> wait, if CFNetwork is doing the caching, I would need to go lower to
> avoid it?
If I load CNN.com right now, I fetch the HTML page, plus at least 127
image, CCS, and javascript files. So if you use something more low
level, like CFNetwork or NSURL
oh i see (too late for that last post of mine) that you are
recommending NSURLConnection... I'll look into that...
You are right, i am probably not needing WebView, i only am using it,
because that is what i founddrives me crazy the
documentation... it is there, but you have t
wait, if CFNetwork is doing the caching, I would need to go lower
to avoid it? what would i use to get html or xml type of info off
the website, without giving the website pause for what i am doing?
(or best guess on what a website might consider bad behavior)
Jon.
On Oct 10, 2009,
On Oct 10, 2009, at 12:35 PM, Thomas Wetmore wrote:
Please take this off list.
Why? This seems like a relevant discussion for cocoa-dev. Just because
you're not interested in it doesn't make it off-topic.
—Jens___
Cocoa-dev mailing list (Cocoa-
oh... that is good to know... hmm, well it looks like i need to go
lower in the mechanism, stuff i don't know anything about, so i'll
do research on the best way to get the info off the website at a lower
level.
Jon.
On Oct 10, 2009, at 1:33 PM, Jens Alfke wrote:
Many large websites
using DOM,
Jon.
On Oct 10, 2009, at 1:28 PM, Shawn Erickson wrote:
using WebKit's DOM API to get at the pages content?
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Cont
ok, i'll do research on these..
Jon.
On Oct 10, 2009, at 1:25 PM, Shawn Erickson wrote:
It sounds like you need to get at the HTTP content itself and pull
data out of that, right? If all you need is the HTTP content you can
drop down to things like Foundation's URL Loading System [1], maybe
Please take this off list.
Thanks,
Tom Wetmore
On Oct 10, 2009, at 3:28 PM, Shawn Erickson wrote:
I meant to ask if you are accessing the HTTP or using WebKit's DOM
API to
get at the pages content? Basically how are using using WebView to
access
the data you need.
-Shawn
On Sat, Oct 10,
A couple of points…
[1] Yes, it is possible to allocate "wired" memory that is forced to
stay in physical RAM and never be paged to disk. But this ability is
pretty much used only by low-level software like kernel extensions,
device drivers, and real-time audio processors. These are things
I meant to ask if you are accessing the HTTP or using WebKit's DOM API to
get at the pages content? Basically how are using using WebView to access
the data you need.
-Shawn
On Sat, Oct 10, 2009 at 12:25 PM, Shawn Erickson wrote:
>
>
> On Sat, Oct 10, 2009 at 12:12 PM, jon wrote:
>
>> I take th
On Sat, Oct 10, 2009 at 12:12 PM, jon wrote:
> I take the info off the website, "data" if you like... data that changes
> or could change at any given time, every second even and process it,
> and trigger an event if the data is to my liking.
>
> how would i get the data off a website,
I take the info off the website, "data" if you like... data that
changes or could change at any given time, every second even
and process it, and trigger an event if the data is to my liking.
how would i get the data off a website, formated in the only way i
know it? which is
On Sat, Oct 10, 2009 at 12:04 PM, jon wrote:
> thanks for doing that, it helped, cacheing hmmm... i don't think there
> is away around this, i need a fresh load to see if the data has changed
> each time at the website.It appears that disk IO is here to stay.
Stepping back from this
oh wait, that means i can turn off cacheing, I at least can see if
that will help, I'll go read up on how to turn off cacheing..
Jon.
On Oct 10, 2009, at 12:57 PM, Shawn Erickson wrote:
Which is exactly what I expected (and others) given the fact that by
default the URL loading sub-syst
thanks for doing that, it helped, cacheing hmmm... i don't think
there is away around this, i need a fresh load to see if the data
has changed each time at the website.It appears that disk IO is
here to stay.
Jon.
On Oct 10, 2009, at 12:57 PM, Shawn Erickson wrote:
Which is e
On Sat, Oct 10, 2009 at 11:08 AM, jon wrote:
> Hi Bill, in this theme of normal behavior, maybe this would make what i'm
> asking more clear.
>
> in an exercise of thought, if you wrote an app, and the only thing it did
> was put up a window permanently (for the run of it's process life), w
ahh, ok thanks, that helps a lot.
Jon.
On Oct 10, 2009, at 12:30 PM, Alex Kac wrote:
If it was using a web cache, then yes.
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No, Activity Monitor as not a developer tool. As I said (and other
too), uses proper tools. Instrument, may be a good starting point.
Le 10 oct. 2009 à 20:12, jon a écrit :
ok, I have Activity monitor open, particularly to the "disk
activity" tab, and the IO checked, as i said before, an
If it was using a web cache, then yes. A webview uses webkit. Which
uses URL caches and web caches. There are many things going on here.
Way more than just one little view. It could simply be checking for
the data in a cache, for example. You don't know because its not your
code. I just don
ok, I have Activity monitor open, particularly to the "disk
activity" tab, and the IO checked, as i said before, and i can see
Disk writes every 20 secs.is there a clearer way to demonstrate
that Disk IO is happening? am i fulling my self by looking at this
tool?
Jon.
On Oct 10
Hi Bill, in this theme of normal behavior, maybe this would make
what i'm asking more clear.
in an exercise of thought, if you wrote an app, and the only thing
it did was put up a window permanently (for the run of it's process
life), with a single webview in it, and hardwired a load
On Sat, Oct 10, 2009 at 10:48 AM, jon wrote:
> I could use an explanation then, if you go into "activity monitor" you
> will see a heading of "real memory" and "virtual memory". specifically
> for all the current "Processes"..
>
> what does Apple mean by "real memory"?in that, I mi
On Sat, Oct 10, 2009 at 10:55 AM, jon wrote:
> oh yes, i plan on optimization, but this was not the original question,
> not one of how should i optimize, it was one of "can i keep my process
> from using Disk I0, as a means of it's memory use?". to save on wear and
> tear of the disk for
oh yes, i plan on optimization, but this was not the original
question, not one of how should i optimize, it was one of "can i
keep my process from using Disk I0, as a means of it's memory
use?". to save on wear and tear of the disk for this particular
process.
On Oct 10, 2009, at
Jon, please use Instruments.app (and/or various related tools; Activity
Monitor.app, Shark.app, sample, top, fs_usage, vm_stat, vmmap/vmmap64, etc.)
to understand what your process it doing both in terms of IO, memory
utilization/allocations and even CPU time. Using those tools you can
understand w
I could use an explanation then, if you go into "activity monitor"
you will see a heading of "real memory" and "virtual memory".
specifically for all the current "Processes"..
what does Apple mean by "real memory"?in that, I might see why
you asked the question?and why yo
jon write:
there are no files being accessed, only the webView that is
it's source of data it's only source. it works on that data,
finishes, and does nothing for 20 more seconds. (a trigger can
happen, but even if there was no trigger, the disk writes are there)
Consider using so
ok thanks, i was pretty sure it is "normal behavior" i am only
asking if there is away around that particular behavior, and your
answer was what i figured might be the case...
so i am a little clearer, it is normal for apps to use disk IO in
the way we are describing, even if th
On Oct 10, 2009, at 9:53 AM, jon wrote:
Ok, let me re-word it then, is there a way i can keep a process
from using Disk writes as a form of it's own memory use? I
already know that it is a memory "thing" since the program never
uses the disk to write out any files. (during the proc
Le 10 oct. 2009 à 18:53, jon a écrit :
Ok, let me re-word it then, is there a way i can keep a process
from using Disk writes as a form of it's own memory use? I
already know that it is a memory "thing" since the program never
uses the disk to write out any files. (during the proce
On Sat, Oct 10, 2009 at 12:53 PM, jon wrote:
>
> there are no files being accessed, only the webView
WebView can access files on its own. Have you disabled cacheing?
sherm--
--
Cocoa programming in Perl: http://camelbones.sourceforge.net
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Ok, let me re-word it then, is there a way i can keep a process from
using Disk writes as a form of it's own memory use? I already
know that it is a memory "thing" since the program never uses the
disk to write out any files. (during the process)... nor use the disk
in any other wa
On 10 Oct 2009, at 17:44, jon wrote:
no, no control over the website, but on webView i turned off all
the java script and flash and stuff, so that helps with the speed,
not with it using virtual memory every 20 seconds, and it does need
to be 20 seconds.
So if you change your proce
no, no control over the website, but on webView i turned off all
the java script and flash and stuff, so that helps with the speed,
not with it using virtual memory every 20 seconds, and it does need
to be 20 seconds.
Jon.
On Oct 10, 2009, at 9:44 AM, Michael Dautermann wrote:
Is thi
On Sat, Oct 10, 2009 at 8:34 AM, jon wrote:
is there a way to force it to use real memory rather than virtual?
This is, as stated, nonsensical. Your process works in its own independent
virtual memory space that is mapped to physical RAM as needed by the virtual
memory system. That is how it is
On Oct 10, 2009, at 8:24 AM, jon wrote:
it loads a website, to see if there are changes to the website, it
then does a lot of work, the large memory things, like the
"webView" are just one instance, and are not deallocating... (uses
just that one instance over and over again, not ma
exactly, I look at Activity monitor, "disk Activity" and i can
see a spike of disk data read/writes every 20 seconds.
Jon.
On Oct 10, 2009, at 9:31 AM, Jean-Daniel Dupas wrote:
What is real memory ? Do you want to address the RAM directly
without any virtual to physical mapping ?
Le 10 oct. 2009 à 17:24, jon a écrit :
it loads a website, to see if there are changes to the website, it
then does a lot of work, the large memory things, like the
"webView" are just one instance, and are not deallocating... (uses
just that one instance over and over again, not mak
it loads a website, to see if there are changes to the website, it
then does a lot of work, the large memory things, like the
"webView" are just one instance, and are not deallocating... (uses
just that one instance over and over again, not making new ones) so
that i don't think is
On Oct 10, 2009, at 7:37 AM, jon wrote:
I have an app that run's a process every 20 seconds during the day...
is there a way to force it to use real memory rather than virtual?
because it runs every 20 seconds, and is defaulting to normal
memory allocation,
it has a lot of disk swapping
I have an app that run's a process every 20 seconds during the day...
is there a way to force it to use real memory rather than virtual?
because it runs every 20 seconds, and is defaulting to normal memory
allocation,
it has a lot of disk swapping in and out, many many times during the
d
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