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Re: Difference in curl performance between RHEL6 and RHEL7

From: Alex Bligh <alex_at_alex.org.uk>
Date: Tue, 12 Aug 2014 10:14:27 +0100

On 12 Aug 2014, at 10:05, Alastair Scobie <ascobie_at_ed.ac.uk> wrote:

> We did notice that when using DNS names in the URL, curl forks off a process to do the name lookup and then poll()s. There's no such fork when using an IP address in the URL. The poll() timesout after a period of time - we suspect this is the cause of the delay.

What does 'strace -tt -T -f curl ...' show?

It may be that RHEL's resolver library is slower.

-- 
Alex Bligh
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Received on 2014-08-12