From: Chris Wright <chrisw@sous-sol.org>
To: Alok Kataria <akataria@vmware.com>
Cc: Chris Wright <chrisw@sous-sol.org>,
James Bottomley <James.Bottomley@suse.de>,
Randy Dunlap <randy.dunlap@oracle.com>,
Mike Christie <michaelc@cs.wisc.edu>,
Bart Van Assche <bvanassche@acm.org>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
Matthew Wilcox <matthew@wil.cx>,
"pv-drivers@vmware.com" <pv-drivers@vmware.com>,
Roland Dreier <rdreier@cisco.com>,
LKML <linux-kernel@vger.kernel.org>,
"Chetan.Loke@Emulex.Com" <Chetan.Loke@Emulex.Com>,
Brian King <brking@linux.vnet.ibm.com>,
Rolf Eike Beer <eike-kernel@sf-tec.de>,
Robert Love <robert.w.love@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Daniel Walker <dwalker@fifo99.com>, Greg KH <gregkh@suse.de>,
"virtualization@lists.linux-foundataion.org"
<virtualization@lists.linux-foundataion.org>
Subject: Re: SCSI driver for VMware's virtual HBA - V5.
Date: Tue, 13 Oct 2009 15:00:13 -0700 [thread overview]
Message-ID: <20091013220013.GB2908@sequoia.sous-sol.org> (raw)
In-Reply-To: <1255469294.12792.93.camel@ank32.eng.vmware.com>
* Alok Kataria (akataria@vmware.com) wrote:
> On Mon, 2009-10-12 at 22:37 -0700, Chris Wright wrote:
> > > + pvscsi_template.can_queue =
> > > + min(PVSCSI_MAX_NUM_PAGES_REQ_RING, pvscsi_ring_pages) *
> > > + PVSCSI_MAX_NUM_REQ_ENTRIES_PER_PAGE;
> > > + pvscsi_template.cmd_per_lun =
> > > + min(pvscsi_template.can_queue, pvscsi_cmd_per_lun);
> >
> > When/how are these tunables used? Are they still useful?
>
> cmd_per_lun, is a commandline parameter.
Actually I meant how is a user supposed to use these? They looked to me
like tunables that were part of developing a driver that may not be
needed any longer. What are the right values, what are the tradeoffs,
etc? Or should they just be removed?
thanks,
-chris
next prev parent reply other threads:[~2009-10-13 22:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-30 18:53 Alok Kataria
2009-09-30 18:56 ` Alok Kataria
2009-10-02 0:47 ` Chris Wright
2009-10-02 1:43 ` James Bottomley
2009-10-02 4:37 ` Alok Kataria
2009-10-06 0:30 ` Alok Kataria
2009-10-13 5:37 ` Chris Wright
2009-10-13 21:28 ` Alok Kataria
2009-10-13 22:00 ` Chris Wright [this message]
2009-10-13 22:13 ` Alok Kataria
2009-10-13 21:51 ` SCSI driver for VMware's virtual HBA - V6 Alok Kataria
2009-10-13 23:41 ` Chris Wright
2009-10-28 20:28 ` Alok Kataria
2009-10-13 14:35 ` SCSI driver for VMware's virtual HBA - V5 James Bottomley
2009-10-13 16:45 ` Jeremy Fitzhardinge
2009-10-13 17:18 ` Alok Kataria
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