Comment 25 for bug 1266492

On Thu, Nov 14, 2013 at 04:47:48PM +0000, neleai at seznam dot cz wrote:
> These also count as I wanted to show a relative performance impact. If

I agree this approach makes sense, but the relative performance impact
could change when the program (possibly linked with libgcc_s) is
invoked via posix_spawn or vfork+exec from a high-load server versus
as part of an inefficient shell script where the shell may have a lot
of additional syscall overhead on each command (this might also vary
between shells; dash or busybox ash might perform very differently
from bash). So while we may not care about the most extreme impact, I
think it's important to consider how large the relative overhead is
when the invocation conditions are a low-overhead, real-world
scenario.

> this is taken into extreme we could improve performance by staticaly linking lm
> and lpthread

Yes, of course -- actually, I would recommend merging all of the glibc
.so's into libc.so, but I understand that the current situation with
symbol versions greatly complicates this, and that there might be
other issues. It would certainly improve load-time performance and
memory overhead for small programs, though. But I think this is
outside the scope of this bug report. The interest in looking at
performance here is asking whether a proposed change would make
performance noticably worse (a regression), not how we can best
optimize startup performance.