The FreeType Project - Bugs: bug #43248, New CFF engine is too slow
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bug #43248: New CFF engine is too slow
Submitter: | Behdad Esfahbod <behdad> | ||
Submitted: | Thu 18 Sep 2014 10:48:00 AM UTC | ||
Severity: | 3 - Normal | Item Group: | None |
Status: | None | Privacy: | Public |
Assigned to: | None | Open/Closed: | Open |
Planned Release: | None |
Tue 14 Oct 2014 11:38:08 PM UTC, comment #2: |
Behdad Esfahbod <behdad> |
Fri 19 Sep 2014 06:44:11 PM UTC, comment #1: Hi Behdad, Here is the response I sent to freetype-devel on 9/5.
1 39us 19us
|
Dave Arnold <darnold> |
Thu 18 Sep 2014 10:48:00 AM UTC, original submission:
I noticed that fontconfig caching (eg, running fc-query on font files) is five
|
Behdad Esfahbod <behdad> |
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Follows 1 latest change.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2014-09-18 | behdad | Carbon-Copy | - | Added -email is unavailable- |
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Corresponding source code
Thanks Dave.
I'm guessing that you might be seeing a lot of I/O which masks the actual work being done. On Linux, with NotoSansCJK-Regular.otf, for flags 0=DEFAULT 1=NO_SCALE 2=NO_HINTING I get the following times:
New engine:
0:
Load : 13.914 us/op
1:
Load : 11.615 us/op
2:
Load : 13.013 us/op
Old engine:
0:
Load : 23.984 us/op
1:
Load : 2.625 us/op
2:
Load : 2.856 us/op
So, looks like the loading used to be superfast but is not anymore.
On the plus side, hinting is twice faster with the new engine.