From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe - Profihost AG Subject: Dirty and cleaning of dirty data Date: Tue, 22 Oct 2013 08:11:46 +0200 Message-ID: <52661722.2050404@profihost.ag> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Return-path: Sender: linux-bcache-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-bcache@vger.kernel.org Hi, while having a system under heavystress - i was seeing the following: Dirty Data on SSD: 35GB data Writes to sata disk mostly 0-4mb/s Why does bcache not start to clean this data to get free ssd space? Right now the system is pretty slow as the caching device is very dirty. Stefan