Subject: bug#15555: Re: bug#15555: 24.3; Bidirectional display very slow with long lines

From: Eli Zaretskii <[email-masked]>
Date: Tue, 18 Feb 2014 19:58:17 +0200

> Date: Tue, 18 Feb 2014 18:31:22 +0400
> From: Dmitry Antipov <[email-masked]>
> Cc: [email-masked]
> 
> Now I'm seeing the use case where each trivial cursor movement causes
> ~100 calls to bidi_shelve_cache, and each call copies ~1.5M of data.

Is this still the same use case with your bug15555 function and the
4000.txt file?  If not, please describe this use case.

As for calls to bidi_shelve_cache, they are a side effect of saving
and restoring the iterator object, see the commentary before the
definition of the SAVE_IT macro.