115288 - i18n mail performance meta bug

Status: RESOLVED INVALID

(MailNews Core :: Internationalization, defect)

Description

[nhottanscp]

This is a meta bug for i18n mail performance.

I think i18n eng may contribute to following area.
* Message Display Speed
* Thread Pane scrolling
* Thread Pane sorting
* Message Reply Speed

I am going to do some investigation in follwoing area.
* message header
  MIME header decode
  message header parse
* message body
  view charset conversion
  compose&send charset conversion
* collation key generation
* date format

Here are some items I am going to focus (some I have already improved).
* check unnecessary allocation/copy (unicode conversion, collation key)
* check inefficient instanciation of unicode converter
* performance of locale interfaces (collation, date format)

Comment 1

[nhottanscp]

Some idea,
* For collation, we normalize input string for case insensitive but this can be
substituted by OS API's options (e.g. LCMAP_LOWERCASE for LCMapString).
* There is a call MIME_ConvertCharset which is known to be expensive. I think we
can change the callers to substitute it by i18n util functions and remove it.

Comment 2

[Wayne Mery (:wsmwk)]

Not sure it's worth keeping this meta bug open IMO. These bugs from the 1.0 era, are few and mostly in one component - found via the query https://bugzilla.mozilla.org/buglist.cgi?keywords=perf%2C%20&keywords_type=allwords&list_id=9587837&resolution=---&resolution=DUPLICATE&classification=Client%20Software&classification=Components&query_format=advanced&component=Internationalization&product=MailNews%20Core except for Bug 66465

Comment 3

[Wayne Mery (:wsmwk)]

following up on comment 2. Feel free to reopen if you disagree