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Re: [PATCH 16/35] writeback: increase min pause time on concurrent dirtiers

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From: Peter Zijlstra
Subject: Re: [PATCH 16/35] writeback: increase min pause time on concurrent dirtiers
Date: Tuesday, December 14, 2010 - 1:24 pm

On Tue, 2010-12-14 at 15:13 -0500, Valdis.Kletnieks@vt.edu wrote:

You're confused. 10*HZ jiffies is always 10 seconds. Hertz means
per-second. We take CONFIG_HZ ticks per second, so waiting HZ jiffies
makes us wait 1 second.

USER_HZ is archaic and only used to stabilize user-interfaces that for
some daft reason depended on HZ.
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Messages in current thread:
[PATCH 16/35] writeback: increase min pause time on concur ..., Wu Fengguang, (Mon Dec 13, 7:47 am)
Re: [PATCH 16/35] writeback: increase min pause time on co ..., Valdis.Kletnieks, (Mon Dec 13, 11:23 am)
Re: [PATCH 16/35] writeback: increase min pause time on co ..., Wu Fengguang, (Mon Dec 13, 11:51 pm)
Re: [PATCH 16/35] writeback: increase min pause time on co ..., Valdis.Kletnieks, (Tue Dec 14, 11:42 am)
Re: [PATCH 16/35] writeback: increase min pause time on co ..., Peter Zijlstra, (Tue Dec 14, 11:55 am)
Re: [PATCH 16/35] writeback: increase min pause time on co ..., Valdis.Kletnieks, (Tue Dec 14, 1:13 pm)
Re: [PATCH 16/35] writeback: increase min pause time on co ..., Peter Zijlstra, (Tue Dec 14, 1:24 pm)
Re: [PATCH 16/35] writeback: increase min pause time on co ..., Valdis.Kletnieks, (Tue Dec 14, 1:37 pm)