From: hch@lst.de (Christoph Hellwig)
Subject: nvme-5.3 ssd performance regression
Date: Wed, 17 Jul 2019 06:40:41 +0200 [thread overview]
Message-ID: <20190717044041.GB4755@lst.de> (raw)
In-Reply-To: <a510b276a5c94fa79ec86dfde78fcbc0edb06053.camel@kernel.crashing.org>
On Wed, Jul 17, 2019@02:33:59PM +1000, Benjamin Herrenschmidt wrote:
> On Wed, 2019-07-17@06:26 +0200, Christoph Hellwig wrote:
> > On Wed, Jul 17, 2019 at 10:15:00AM +1000, Benjamin Herrenschmidt
> > wrote:
> > > Yes. Reverting this brings the speed back to 2GB/s
> >
> > Thanks. Can you try this series as well:
> >
> >
> http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/dma-max-mapping-size-fix
>
> With or without
>
> "nvme-pci: limit max_hw_sectors based on the DMA max mapping size"
>
> ?
With. Just pull in the branch :)
next prev parent reply other threads:[~2019-07-17 4:40 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-16 1:04 nvme-5.3 ssd performance regression Benjamin Herrenschmidt
2019-07-16 7:12 ` Ming Lei
2019-07-16 9:36 ` Christoph Hellwig
2019-07-16 10:55 ` Benjamin Herrenschmidt
2019-07-16 12:47 ` Ming Lei
2019-07-16 19:12 ` Christoph Hellwig
2019-07-17 0:15 ` Benjamin Herrenschmidt
2019-07-17 4:26 ` Christoph Hellwig
2019-07-17 4:33 ` Benjamin Herrenschmidt
2019-07-17 4:40 ` Christoph Hellwig [this message]
2019-07-17 5:50 ` Benjamin Herrenschmidt
2019-07-17 6:19 ` Benjamin Herrenschmidt
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