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SubjectRe: horrible disk thorughput on itanium
Andi Kleen writes:
> (Linus Torvalds) writes:
> >
> > "putc()" is a standard function. If it sucks, let's get it fixed. And
> > instead of changing bonnie, how about pinging the _real_ people who
> > write sucky code?
> It is easy to fix. Just do #define putc putc_unlocked
> There is just a slight problem: it'll fail if your application is threaded
> and wants to use the same FILE from multiple threads.
> It is a common problem on all OS that eventually got threadsafe stdio.
> I bet putc sucks on Solaris too.

This kind of thing should be covered by _REENTRANT. If you don't
compile with _REENTRANT (the default), then putc() should be the
unlocked version.


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