From mboxrd@z Thu Jan  1 00:00:00 1970
From: willy@linux.intel.com (Matthew Wilcox)
Date: Fri, 18 Oct 2013 11:48:01 -0400
Subject: [PATCH 0/3] Convert from bio-based to blk-mq v2
In-Reply-To: <1382102062-22270-1-git-send-email-m@bjorling.me>
References: <1382102062-22270-1-git-send-email-m@bjorling.me>
Message-ID: <20131018154801.GQ16716@linux.intel.com>

On Fri, Oct 18, 2013@03:14:19PM +0200, Matias Bjorling wrote:
> Performance study:
> 
> System: HGST Research NVMe prototype, Haswell i7-4770 3.4Ghz, 32GB 1333Mhz

I don't have one of these.  Can you provide more details about it,
such as:
 - How many I/O queues does it have?
 - Are the interrupts correctly bound to the CPUs (for both sets of tests)?
   The driver isn't allowed to set the irq affinity correctly itself;
   it can only set a hint and userspace (eg irqbalance) has to set the
   affinity correctly
 - Does it support interrupt coalescing?  If so, have you managed to do any
   testing using that feature?