Re: [O] Very slow performance in Org-mode on 10k line file?

[John Hendy]

On Wed, Aug 7, 2013 at 4:39 PM, Rainer Stengele
<address@hidden> wrote:
> Am 07.08.2013 22:25, schrieb John Hendy:
>> Greetings,
>>
>>
>> I just started experiencing major lag in Org-mode on my main work
>> notes file, which is at about 10k lines. Is that getting up to the
>> point where files get unwieldy? In googling around, I found a few
>> suggestions:
>>
>> - Fiddle with linum settings
>> http://stackoverflow.com/questions/5229705/emacs-org-mode-turn-off-line-numbers
>>
>> I set linum-eager to off and linum-delay to on for the current setting
>> via the customize interface and didn't perceive an effect. Any
>> keystroke in my org file takes 1-2 seconds to appear.
>>
>> - Fontification?
>> http://comments.gmane.org/gmane.emacs.orgmode/45197
>>
>> Comments there have files in the 5-137k line range and many say
>> there's no/little lag unless running agenda commands.
>>
>> Any other suggestions? I use this file almost daily, mostly for
>> reference, not adding... that's to say it hasn't grown majorly in the
>> past even 3months (maybe a few hundred lines), but performance
>> *definitely* wasn't anything like this until the last week or so.
>>
>> Thanks for any suggestions on improving or tracking down the source.
>> In the mean time, I'm going to revert to a few git commits ago and see
>> if that does anything for me.
>>
>>
>> Best regards,
>> John
>>
>>
> Hi,
>
> just jumping on the bandwagon.
> My one and only "biggest" issue with wonderful Orgmode is slow Emacs.
> I run Emacs on i7 hardware with lots of memory and still have an Emacs 
> Orgmode that answers rather slowly.
> Slow meaning it is just not snappy at all. Creating any aganda takes several 
> seconds which is a long time to wait
> for the result. I already spent a lot of thought into how to optimise the 
> performance of my system, archiving and
> splitting Org files, using sticky agenda etc.
> I know there is no quick solution to the slowness because of the limitation 
> of threading in Emacs - I just wanted
> to mention that very "unmodern" behaviour of Emacs running Orgmode. I have to 
> use Windows 7 so this makes it even
> slower. I assume my environment would run faster on Linux.
>

I'm running Arch Linux 64bit on an HP EliteBook 8540w with an i7 and
8G of RAM. HD is 54% full at present. I agree that this shouldn't be a
big burden, and whatever happened recently really made this unusable
for me. Oddly, generating an agenda only takes a couple of seconds,
which is plenty fast for me, even using search.

> So yes, this is nothing more than something like a rant.
> For me Orgmode is still the killer app in Emacs, it is just sad to have a 
> slow environment on quite modern
> hardware with some bigger Org files.
> My files are of size:
>
> $ wc *org
>     124    1690   31670 file1.org
>    1555   11829   97805 file2.org
>   35022  262820 2314234 file3.org
>     999    4968  105854 file4.org
>     557    4029   30586 file5.org
>    2523   20324  162165 file6.org
>    2447   19974  139768 file7.org
>     689    4703   36495 file8.org
>    6789   58782  461211 file9.org
>   53078  403126 3531142 total
>

$ wc *.org
    23     90    867 bibliography.org
    42    192   1756 clocking.org
  2137  18286 122303 devel.org
  9837  74994 494234 projects.org
  1536   9692  77261 reference.org
  1057   6673  48309 tf.org
 14632 109927 744730 total

projects.org is my most used file by far, and the biggest, but nothing
compared to some of the folks posting on the link I showed who have
30-130k line files!


John

> Rainer
>