From: Matthew Wilcox <willy@linux.intel.com>
To: Matias Bjorling <m@bjorling.me>
Cc: axboe@kernel.dk, keith.busch@intel.com,
linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org
Subject: Re: [PATCH 0/3] Convert from bio-based to blk-mq v2
Date: Fri, 18 Oct 2013 11:48:01 -0400 [thread overview]
Message-ID: <20131018154801.GQ16716@linux.intel.com> (raw)
In-Reply-To: <1382102062-22270-1-git-send-email-m@bjorling.me>
On Fri, Oct 18, 2013 at 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?
next prev parent reply other threads:[~2013-10-18 15:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-18 13:14 [PATCH 0/3] Convert from bio-based to blk-mq v2 Matias Bjorling
2013-10-18 13:14 ` [PATCH 1/3] blk-mq: call exit_hctx on hw queue teardown Matias Bjorling
2013-10-18 13:14 ` [PATCH 2/3] NVMe: Extract admin queue size Matias Bjorling
2013-10-18 13:14 ` [PATCH 3/3] NVMe: Convert to blk-mq Matias Bjorling
2013-10-18 15:13 ` Keith Busch
2013-10-18 19:06 ` Matias Bjørling
2013-10-22 16:55 ` Keith Busch
2013-10-22 18:55 ` Matias Bjorling
2013-10-22 19:52 ` Keith Busch
2013-10-18 15:48 ` Matthew Wilcox [this message]
2013-10-18 19:10 ` [PATCH 0/3] Convert from bio-based to blk-mq v2 Matias Bjørling
2013-10-18 19:21 ` Matias Bjorling
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