From: Keith Busch <kbusch@kernel.org>
To: Jun Zeng <jun1.zeng@intel.com>
Cc: axboe@kernel.dk, hch@lst.de, sagi@grimberg.me,
linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org,
andriy.shevchenko@intel.com, gang.cao@intel.com,
jun.i.jin@intel.com, yong.hu@intel.com,
Liang Fang <liang.a.fang@intel.com>
Subject: Re: [PATCH v1 1/1] nvme-pci: adaptive interrupt coalescing
Date: Thu, 16 Jul 2026 14:52:41 -0600 [thread overview]
Message-ID: <allEmTmXCFosxIOr@kbusch-mbp> (raw)
In-Reply-To: <20260715075703.15578-2-jun1.zeng@intel.com>
On Wed, Jul 15, 2026 at 03:57:03PM +0800, Jun Zeng wrote:
> Add adaptive interrupt coalescing to improve IOPS for high-throughput
> workloads. Monitor IO pressure periodically and enable/disable coalescing
> automatically based on IOPS, queue depth, and inflight IO thresholds.
> This feature is enabled by default, can be controlled through debugfs
> variable during runtime.
Can't you do all this from user space? You'd maybe need the blk-mq
debugfs to get access to the individual hctx dispatch numbers, but maybe
that's okay?
The atomic_long_inc where you placed it is especially harmful to polled
queues.
next prev parent reply other threads:[~2026-07-16 20:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-15 7:57 [PATCH v1 0/1] " Jun Zeng
2026-07-15 7:57 ` [PATCH v1 1/1] " Jun Zeng
2026-07-16 20:52 ` Keith Busch [this message]
2026-07-17 1:10 ` Zeng, Jun1
2026-07-17 8:06 ` Shevchenko, Andriy
2026-07-17 17:06 ` [PATCH v1 0/1] " Bart Van Assche
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