From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe Subject: Re: can't get bache's sequential_cutoff to work Date: Tue, 23 Jul 2013 21:41:39 +0200 Message-ID: <51EEDC73.5020101@profihost.ag> References: <51EE9056.7030903@profihost.ag> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-bcache-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Jack Wang Cc: "linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Kent Overstreet List-Id: linux-bcache@vger.kernel.org It's 3.10 with bcache Updates from kent's for 3.10 branch. Stefan This mail was sent with my iPhone. Am 23.07.2013 um 18:00 schrieb Jack Wang >: > Hi Stefan, > > Strange, I tested bcache 2 month ago, mostly bcache-3.2 branch in > writeback mode, it works as claimed. > > which kernel version are you using? > > Jack > > > 2013/7/23 Stefan Priebe - Profihost AG > > > Hi, > > maybe i missed something or maybe i'm just wrong. > > > # cat /sys/block/bcache2/bcache/sequential_cutoff > 512k > > # cat /sys/block/bcache2/bcache/stats_five_minute/bypassed > 64.3M > > # dd if=/dev/zero of=/mnt/bcache2/ttt bs=4M count=1000 oflag=direct > 1000+0 records in > 1000+0 records out > 4194304000 bytes (4,2 GB) copied, 11,0348 s, 380 MB/s > > # cat /sys/block/bcache2/bcache/stats_five_minute/bypassed > 69.3M > > I also see only IOP/s an writes go to the SSD but not to the disk > behind. What's wrong? > > Greets, > Stefan > -- > To unsubscribe from this list: send the line "unsubscribe > linux-bcache" in > the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html > >