From: Dan Williams <dan.j.williams@intel.com>
To: linux-scsi@vger.kernel.org
Cc: Marcin Tomczak <marcin.tomczak@intel.com>
Subject: [PATCH v2 06/15] isci: performance-fix, shorten default "no outbound task" timeout
Date: Wed, 04 Jan 2012 01:32:54 -0800 [thread overview]
Message-ID: <20120104093254.9147.2460.stgit@localhost6.localdomain6> (raw)
In-Reply-To: <20120104093015.9147.24234.stgit@localhost6.localdomain6>
From: Marcin Tomczak <marcin.tomczak@intel.com>
>From Richard Boyd:
"No task timeout timer reduced from 20 to 2 This timer controls how
long the SCU hardware will hold open the TX side of the connection
before sending a DONE. The timer allows the hardware to attempt to
optimize the DONE/CLOSE behavior to allow for new COMMAND IU to be
posted. In practice closing the connection quicker is better."
Signed-off-by: Marcin Tomczak <marcin.tomczak@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/scsi/isci/host.c | 2 +-
drivers/scsi/isci/init.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c
index 9a52b98..670ecb4 100644
--- a/drivers/scsi/isci/host.c
+++ b/drivers/scsi/isci/host.c
@@ -1697,7 +1697,7 @@ static void sci_controller_set_default_config_parameters(struct isci_host *ihost
ihost->user_parameters.ssp_inactivity_timeout = 5;
ihost->user_parameters.stp_max_occupancy_timeout = 5;
ihost->user_parameters.ssp_max_occupancy_timeout = 20;
- ihost->user_parameters.no_outbound_task_timeout = 20;
+ ihost->user_parameters.no_outbound_task_timeout = 2;
}
static void controller_timeout(unsigned long data)
diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c
index 1047108..3c4ddad 100644
--- a/drivers/scsi/isci/init.c
+++ b/drivers/scsi/isci/init.c
@@ -94,7 +94,7 @@ MODULE_DEVICE_TABLE(pci, isci_id_table);
/* linux isci specific settings */
-unsigned char no_outbound_task_to = 20;
+unsigned char no_outbound_task_to = 2;
module_param(no_outbound_task_to, byte, 0);
MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)");
next prev parent reply other threads:[~2012-01-04 9:32 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-04 9:32 [GIT PATCH v2 00/15] isci update for 3.3 (part1) Dan Williams
2012-01-04 9:32 ` [PATCH v2 01/15] isci, firmware: Remove isci fallback parameter blob and generator Dan Williams
2012-01-04 9:32 ` [PATCH v2 02/15] isci: cleanup oem parameter and recipe handling Dan Williams
2012-01-04 9:32 ` [PATCH v2 03/15] isci: update afe (analog-front-end) recipe for C1 Dan Williams
2012-01-04 9:32 ` [PATCH v2 04/15] isci: oem parameter format v1.1 (ssc select) Dan Williams
2012-01-04 9:32 ` [PATCH v2 05/15] isci: oem parameter format v1.3 (cable select) Dan Williams
2012-01-04 9:32 ` Dan Williams [this message]
2012-01-04 9:33 ` [PATCH v2 07/15] isci: link speeds default to gen 2 Dan Williams
2012-01-04 9:33 ` [PATCH v2 08/15] isci: remove unused 'isci_tmf->device' field Dan Williams
2012-01-04 9:33 ` [PATCH v2 09/15] isci: update version to 1.1 Dan Williams
2012-01-04 9:33 ` [PATCH v2 10/15] isci: Fix IO fails when pull cable from phy in x4 wideport in MPC mode Dan Williams
2012-01-04 9:33 ` [PATCH v2 11/15] isci: enable wide port targets Dan Williams
2012-01-04 9:33 ` [PATCH v2 12/15] isci: allow more time for " Dan Williams
2012-01-04 9:33 ` [PATCH v2 13/15] isci: fix io failures while wide port links are coming up Dan Williams
2012-01-04 9:33 ` [PATCH v2 14/15] isci: fix start OOB Dan Williams
2012-01-04 9:33 ` [PATCH v2 15/15] isci: fix, prevent port from getting stuck in the 'configuring' state Dan Williams
2012-01-06 1:54 ` [GIT PATCH v2 00/15] isci update for 3.3 (part1) Dan Williams
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