Re: [patch] massive libtool speedup for large libs
Re: [patch] massive libtool speedup for large libs
- Subject: Re: [patch] massive libtool speedup for large libs
- From: Laurence Harris <email@hidden>
- Date: Thu, 1 Mar 2007 10:00:45 -0500
On Mar 1, 2007, at 7:13 AM, Jonas Maebe wrote:
On 1 mrt 2007, at 10:58, Olivier Tristan wrote:
Note that judicious use of plain writes without internal caching
can also have a quite detrimental effect on speed. E.g, Apple's
ld64 does that (in 10.4 at least) and it's really a lot slower than
the regular ld (which seems to write in blocks of at least 32KB).
ld64 moreover even does a lot of zero-byte writes (from fs_usage):
[...]
But even without the zero byte writes, performing a system call for
writing anything less than 32KB or so is asking for slow performance.
Yes, I still have to file a radar for this (although I'm hesitant
to spend time on it, since I suppose that ld64 will have gained
significant improvements in 10.5 given that it's much more used
there).
This sounds dangerously like an assumption to me. ;-)
Larry
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