Re: [ft] Minimizing small file reads

[suzuki toshiya]

Hi,

In the system supporting memmap() and FreeType2 is configured
to use it, the number of system call would be much reduced in
comparison with the system without memmap. In the target platform
which you're working for, memmap() is available? Or, available
and configured to use it, but you think still too many read
system call is executed?

Regards,
mpsuzuki

☂Josh Chia (谢任中) wrote (2008/11/18 10:39):
> Hi,
>
> I notice that freetype makes a lot of small reads, resulting in a lot of
> SYS_read calls.  I'm using freetype in an app that runs in a ptrace sandbox,
> so performance is sensitive to system calls.  Is there a simple way to
> prevent the numerous small reads (via ft_ansi_stream_io), such as
> configuring freetype to prefetch into a large buffer when reading, and
> making it assume that font files never change?  Will I need to make some
> configuration changes or do I need to make code changes?  Thanks!
>
> Josh
>
>
>
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