RLock IO bound?

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Date	Sat, 2 Mar 2013 17:35:23 -0800 (PST)
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Subject	RLock IO bound?
From	juancarlo.anez@gmail.com
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Hello,

I have a set of processes that bring any number of cores to 100% use when unsynchronized (they take independent jobs from a queue).

As soon as I add an RLock to handle shared access to a file-system directory, the CPU utilization drops to 60%.

I'm not talking about overall speed here, but about processes that were CPU bound and suddenly become bound to something else with RLock.

Any explanations?

Cheers,

-- Juancarlo

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RLock IO bound? juancarlo.anez@gmail.com - 2013-03-02 17:35 -0800
  Re: RLock IO bound? Cameron Simpson <cs@zip.com.au> - 2013-03-03 17:27 +1100

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