Messages in this thread | | | Date | Sat, 26 Jan 2002 04:59:34 +0000 | From | Jamie Lokier <> | Subject | Re: [ACPI] ACPI mentioned on lwn.net/kernel |
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Andrew Pimlott wrote: > > Most likely it says very bad things about getcwd() implementation in Perl > > compared to sys_getcwd() in the kernel. > > No no no--it says very bad things about 'use POSIX', and in general > about overhead-creep in the perl library.
I ended up calling sys_getcwd from Perl as it's extremely fast. Even faster if you hard code the syscall number instead of reading the header file in Perl :-)
However, I was still impressed by the 0.0075s for a pipe/fork/exec.
'use POSIX' is very slow, but Perl's getcwd() is pretty slow too -- it does the old fashioned directory walk. We cannot blame it for being portable.
-- Jamie - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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