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Message-ID: <50C06EC3.20002@redhat.com> Date: Thu, 06 Dec 2012 11:09:07 +0100 From: Paolo Bonzini <pbonzini@...hat.com> To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com> CC: "James E.J. Bottomley" <JBottomley@...allels.com>, Matthew Wilcox <willy@...ux.intel.com>, Tim Chen <tim.c.chen@...ux.intel.com>, linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] scsi_ram: a RAM-based SCSI driver Il 05/12/2012 17:45, Kirill A. Shutemov ha scritto: > From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com> > > This driver is intended to run as fast as possible, hence the options to > discard writes and reads. It's designed to let us find latency issues > elsewhere in the storage stack (eg filesystem, block layer, scsi layer). > > There are a few different options, controlled through module parameters. > The sector size and disc capacity are load-time parameters, but the > parameters affecting performance are tweakable at runtime. > > By default, it'll allocate half a gigabyte of RAM to use as a ramdisc; > you can change this with the `capacity' module parameter. Is this that much faster than scsi-debug? The discarding options surely can be added there. Paolo -- 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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