From: Sumit Saxena <sumit.saxena@avagotech.com> To: "Martin K. Petersen" <martin.petersen@oracle.com>, Tomas Henzl <thenzl@redhat.com> Cc: jbottomley@parallels.com, hch@infradead.org, linux-scsi@vger.kernel.org, Kashyap Desai <kashyap.desai@avagotech.com> Subject: RE: [PATCH 09/15] megaraid_sas: Dual Queue depth support Date: Wed, 27 Jan 2016 12:39:40 +0530 [thread overview] Message-ID: <621bde6eaedf5577d81013b828222cb9@mail.gmail.com> (raw) In-Reply-To: <yq1k2mvixus.fsf@sermon.lab.mkp.net> > -----Original Message----- > From: Martin K. Petersen [mailto:martin.petersen@oracle.com] > Sent: Wednesday, January 27, 2016 7:32 AM > To: Tomas Henzl > Cc: Sumit Saxena; jbottomley@parallels.com; hch@infradead.org; > martin.petersen@oracle.com; linux-scsi@vger.kernel.org; Kashyap Desai > Subject: Re: [PATCH 09/15] megaraid_sas: Dual Queue depth support > > >>>>> "Tomas" == Tomas Henzl <thenzl@redhat.com> writes: > > >> Yes this is already covered internally, there would be perf penalty > >> with VDs in configuration but this feature will be turned on based on > >> firmware settings and that specific firmware deployment has primary > >> purpose of increasing JBOD performance. This focuses on firmware > >> deployment with less VDs(or no) and more JBODs in configuration. > > Tomas> OK, so it is switched off by default in the firmware and the user > Tomas> and an educated user can switch it on ? if so, it's fine for me. > > Sumit? Yes, this feature will be enabled for specific firmware only. On rest of firmware types, it will be disabled(not supported). Thanks, Sumit > > -- > Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2016-01-27 7:09 UTC|newest] Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-12-18 13:26 [PATCH 00/15] megaraid_sas: Updates for scsi-next Sumit Saxena 2015-12-18 13:26 ` [PATCH 01/15] megaraid_sas: Do not allow PCI access during OCR Sumit Saxena 2016-01-11 17:02 ` Tomas Henzl 2015-12-18 13:26 ` [PATCH 02/15] megaraid_sas: MFI IO timeout handling Sumit Saxena 2016-01-11 17:02 ` Tomas Henzl 2015-12-18 13:26 ` [PATCH 03/15] megaraid_sas: Syncing request flags macro names with firmware Sumit Saxena 2016-01-11 17:03 ` Tomas Henzl 2015-12-18 13:26 ` [PATCH 04/15] megaraid_sas: Task management support Sumit Saxena 2016-01-11 17:03 ` Tomas Henzl 2016-01-14 12:04 ` Sumit Saxena 2015-12-18 13:26 ` [PATCH 05/15] megaraid_sas: Update device Queue depth based on interface type Sumit Saxena 2016-01-12 14:16 ` Tomas Henzl 2016-01-14 11:48 ` Sumit Saxena 2015-12-18 13:26 ` [PATCH 06/15] megaraid_sas: Fastpath region lock bypass Sumit Saxena 2016-01-12 14:44 ` Tomas Henzl 2015-12-18 13:27 ` [PATCH 07/15] megaraid_sas: Reply Descriptor Post Queue(RDPQ) support Sumit Saxena 2015-12-18 14:49 ` [PATCH] megaraid_sas: fix kzalloc-simple.cocci warnings kbuild test robot 2015-12-18 14:49 ` [PATCH 07/15] megaraid_sas: Reply Descriptor Post Queue(RDPQ) support kbuild test robot 2016-01-14 17:38 ` Tomas Henzl 2016-01-27 18:15 ` Sumit Saxena 2015-12-18 13:27 ` [PATCH 08/15] megaraid_sas: Code optimization build_and_issue_cmd return-type Sumit Saxena 2016-01-14 18:05 ` Tomas Henzl 2015-12-18 13:27 ` [PATCH 09/15] megaraid_sas: Dual Queue depth support Sumit Saxena 2016-01-19 13:34 ` Tomas Henzl 2016-01-19 13:44 ` Sumit Saxena 2016-01-20 13:55 ` Tomas Henzl 2016-01-20 14:09 ` Sumit Saxena 2016-01-20 14:16 ` Tomas Henzl 2016-01-20 15:08 ` Sumit Saxena 2016-01-20 16:00 ` Tomas Henzl 2016-01-27 2:02 ` Martin K. Petersen 2016-01-27 7:09 ` Sumit Saxena [this message] 2015-12-18 13:27 ` [PATCH 10/15] megaraid_sas: IO throttling support Sumit Saxena 2016-01-19 13:38 ` Tomas Henzl 2016-01-28 7:18 ` Sumit Saxena 2015-12-18 13:27 ` [PATCH 11/15] megaraid_sas: Make adprecovery variable atomic Sumit Saxena 2016-01-19 13:52 ` Tomas Henzl 2016-01-28 8:30 ` Sumit Saxena 2015-12-18 13:27 ` [PATCH 12/15] megaraid_sas: MFI adapter's OCR changes Sumit Saxena 2016-01-19 14:22 ` Tomas Henzl 2016-01-28 11:12 ` Sumit Saxena 2015-12-18 13:27 ` [PATCH 13/15] megaraid_sas: Introduce module parameter for SCSI command-timeout Sumit Saxena 2016-01-19 14:57 ` Tomas Henzl 2016-01-28 11:17 ` Sumit Saxena 2015-12-18 13:27 ` [PATCH 14/15] megaraid_sas: SPERC OCR changes Sumit Saxena 2016-01-19 15:14 ` Tomas Henzl 2015-12-18 13:27 ` [PATCH 15/15] megaraid_sas: SPERC boot driver reorder Sumit Saxena 2015-12-18 14:05 ` Christoph Hellwig 2016-01-08 7:07 ` Sumit Saxena 2016-01-12 5:26 ` Sumit Saxena
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