From: Paolo Bonzini <pbonzini@redhat.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>,
Matthew Wilcox <willy@linux.intel.com>,
Tim Chen <tim.c.chen@linux.intel.com>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] scsi_ram: a RAM-based SCSI driver
Date: Thu, 06 Dec 2012 11:09:07 +0100 [thread overview]
Message-ID: <50C06EC3.20002@redhat.com> (raw)
In-Reply-To: <1354725918-14713-1-git-send-email-kirill.shutemov@linux.intel.com>
Il 05/12/2012 17:45, Kirill A. Shutemov ha scritto:
> From: "Kirill A. Shutemov" <kirill.shutemov@linux.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
next prev parent reply other threads:[~2012-12-06 10:09 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-05 16:45 [PATCH] scsi_ram: a RAM-based SCSI driver Kirill A. Shutemov
2012-12-06 10:09 ` Paolo Bonzini [this message]
2012-12-07 11:20 ` Kirill A. Shutemov
2012-12-07 22:24 ` Paolo Bonzini
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