[dpdk-dev] [PATCH v6 3/3] doc: update cryptodev scheduler PMD documentation
Fan Zhang
roy.fan.zhang at intel.com
Thu Mar 30 12:47:16 CEST 2017
This patch updates packet size based scheduling mode description.
Signed-off-by: Fan Zhang <roy.fan.zhang at intel.com>
---
doc/guides/cryptodevs/scheduler.rst | 15 +++++++++++++++
doc/guides/rel_notes/release_17_05.rst | 5 +++++
2 files changed, 20 insertions(+)
diff --git a/doc/guides/cryptodevs/scheduler.rst b/doc/guides/cryptodevs/scheduler.rst
index 70fb62e..af54daf 100644
--- a/doc/guides/cryptodevs/scheduler.rst
+++ b/doc/guides/cryptodevs/scheduler.rst
@@ -126,3 +126,18 @@ operation:
among its slaves in a round-robin manner. This mode may help to fill
the throughput gap between the physical core and the existing cryptodevs
to increase the overall performance.
+
+* **CDEV_SCHED_MODE_PKT_SIZE_DISTR:**
+
+ Packet-size based distribution mode, which works with 2 slaves, the primary
+ slave and the secondary slave, and distributes the enqueued crypto
+ operations to them based on their data lengths. A crypto operation will be
+ distributed to the primary slave if its data length is equal to or bigger
+ than the designated threshold, otherwise it will be handled by the secondary
+ slave.
+
+ A typical usecase in this mode is with the QAT cryptodev as the primary and
+ a software cryptodev as the secondary slave. This may help applications to
+ process additional crypto workload than what the QAT cryptodev can handle on
+ its own, by making use of the available CPU cycles to deal with smaller
+ crypto workloads.
diff --git a/doc/guides/rel_notes/release_17_05.rst b/doc/guides/rel_notes/release_17_05.rst
index 2eecdec..ca44df3 100644
--- a/doc/guides/rel_notes/release_17_05.rst
+++ b/doc/guides/rel_notes/release_17_05.rst
@@ -55,6 +55,11 @@ New Features
sPAPR IOMMU based pci probing enabled for vfio-pci devices.
+* **Added packet-size based distribution mode to Cryptodev Scheduler PMD.**
+
+ Packet-size based distribution mode is a scheduling mode that works with
+ 2 slaves and distributes the enqueued crypto operations to them based on
+ their data lengths.
Resolved Issues
---------------
--
2.7.4
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