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Message-ID: <ed038eb20904240737u4d248b63s580f7d4d1831e173@mail.gmail.com> Date: Fri, 24 Apr 2009 16:37:17 +0200 From: Carl Henrik Lunde <chlunde@...g.uio.no> To: "Martin K. Petersen" <martin.petersen@...cle.com> Cc: Jeff Garzik <jeff@...zik.org>, Kay Sievers <kay.sievers@...y.org>, rwheeler@...hat.com, snitzer@...hat.com, neilb@...e.de, James.Bottomley@...senpartnership.com, dgilbert@...erlog.com, jens.axboe@...cle.com, matthew@....cx, linux-ide@...r.kernel.org, linux-scsi@...r.kernel.org, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH 2 of 9] block: Export I/O topology for block devices and partitions > On Fri, Apr 24, 2009 at 07:32, Martin K. Petersen <martin.petersen@...cle.com> wrote: > +What: /sys/block/<disk>/alignment > +What: /sys/block/<disk>/<partition>/alignment > +What: /sys/block/<disk>/queue/minimum_io_size > +What: /sys/block/<disk>/queue/optimal_io_size Would it also be possible and useful to include the number of spindles/channels, i.e., how many requests the device can handle concurrently? CFQ could for example serve two time slices concurrently if you have sequential reads and the device reports two spindles. [sorry for replying in the middle of the thread, but I didn't get the original email] -- mvh Carl Henrik -- 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/
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