lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Thu, 10 Jul 2014 06:50:51 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Benjamin LaHaise <bcrl@...ck.org>
Cc:	"Elliott, Robert (Server Storage)" <Elliott@...com>,
	Jens Axboe <axboe@...nel.dk>,
	"dgilbert@...erlog.com" <dgilbert@...erlog.com>,
	James Bottomley <James.Bottomley@...senPartnership.com>,
	Bart Van Assche <bvanassche@...ionio.com>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: scsi-mq V2

On Thu, Jul 10, 2014 at 09:36:09AM -0400, Benjamin LaHaise wrote:
> There is one possible concern that could be exacerbated by other changes in 
> the system: if the application is running close to the bare minimum number 
> of requests allocated in io_setup(), the per cpu reference counters will 
> have a hard time batching things.  It might be worth testing with an 
> increased number of requests being allocated if this is the case.

Well, Robert said reverting the two aio commits didn't help.  Either he
didn't manage to boot into the right kernel, or we need to look
elsewhere for the culprit.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists