From: sagi@grimberg.me (Sagi Grimberg)
Subject: [PATCH rfc 0/6] convert nvme pci to use irq-poll service
Date: Thu, 27 Oct 2016 13:31:47 +0300 [thread overview]
Message-ID: <a99705df-4f4c-3b2e-e9cc-9f3ca00e17c4@grimberg.me> (raw)
In-Reply-To: <20161027100918.j62izkq6hmos6sc4@linux-x5ow.site>
> Hi Sagi,
Hey Johannes,
> I'm wondering if I've somehow missed the v2 of this series?
You didn't miss it.
I currently have it in:
git://git.infradead.org/nvme-fabrics.git nvme-irq-poll
From my tests with Qemu nvme I still see ~10% performance
degradation for 4K IOs and cannot explain where its
coming from. But I think we need some real setup tests as
well.
Hence, I don't feel comfortable getting this in at this point.
I would appreciate if people can also try it out and provide
some insight (Jens, Christoph, Keith).
The networking folks are using napi everywhere and can reach
much lower latencies than NVMe so IMO we just need to identify
some gaps. I have some micro-optimization patches for irq-poll
but they don't seem to make a real difference.
next prev parent reply other threads:[~2016-10-27 10:31 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-05 9:42 [PATCH rfc 0/6] convert nvme pci to use irq-poll service Sagi Grimberg
2016-10-05 9:42 ` [PATCH rfc 1/6] nvme-pci: Split __nvme_process_cq to poll and handle Sagi Grimberg
2016-10-05 13:21 ` Johannes Thumshirn
2016-10-05 16:52 ` Sagi Grimberg
2016-10-05 19:49 ` Jon Derrick
2016-10-10 7:25 ` Johannes Thumshirn
2016-10-05 9:42 ` [PATCH rfc 2/6] nvme-pci: Add budget to __nvme_process_cq Sagi Grimberg
2016-10-05 13:26 ` Johannes Thumshirn
2016-10-05 9:42 ` [PATCH rfc 3/6] nvme-pci: Use irq-poll for completion processing Sagi Grimberg
2016-10-05 13:40 ` Johannes Thumshirn
2016-10-05 16:57 ` Sagi Grimberg
2016-10-10 7:47 ` Johannes Thumshirn
2016-10-05 9:42 ` [PATCH rfc 4/6] nvme: don't consume cq in queue_rq Sagi Grimberg
2016-10-05 13:42 ` Johannes Thumshirn
2016-10-05 9:42 ` [PATCH rfc 5/6] nvme-pci: open-code polling logic in nvme_poll Sagi Grimberg
2016-10-05 13:52 ` Johannes Thumshirn
2016-10-05 17:02 ` Sagi Grimberg
2016-10-10 7:49 ` Johannes Thumshirn
2016-10-05 9:42 ` [PATCH rfc 6/6] nvme-pci: Get rid of threaded interrupts Sagi Grimberg
2016-10-05 13:47 ` Johannes Thumshirn
2016-10-05 21:47 ` [PATCH rfc 0/6] convert nvme pci to use irq-poll service Keith Busch
2016-10-05 21:55 ` Sagi Grimberg
2016-10-05 22:49 ` Keith Busch
2016-10-05 22:48 ` Sagi Grimberg
2016-10-27 10:09 ` Johannes Thumshirn
2016-10-27 10:31 ` Sagi Grimberg [this message]
2016-10-27 10:58 ` Johannes Thumshirn
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