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From: Gioh Kim <gi-oh.kim@ionos.com>
To: linux-rdma@vger.kernel.org
Cc: bvanassche@acm.org, leon@kernel.org, dledford@redhat.com,
	jgg@ziepe.ca, haris.iqbal@ionos.com, jinpu.wang@ionos.com,
	Gioh Kim <gi-oh.kim@ionos.com>
Subject: [PATCHv3 for-next 4/4] Documentation/ABI/rtrs-clt: Add descriptions for min-latency policy
Date: Wed,  7 Apr 2021 13:34:44 +0200	[thread overview]
Message-ID: <20210407113444.150961-5-gi-oh.kim@ionos.com> (raw)
In-Reply-To: <20210407113444.150961-1-gi-oh.kim@ionos.com>

describe new multipath policy min-latency of the RTRS client.

Signed-off-by: Gioh Kim <gi-oh.kim@ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
---
 Documentation/ABI/testing/sysfs-class-rtrs-client | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-class-rtrs-client b/Documentation/ABI/testing/sysfs-class-rtrs-client
index 0f7165aab251..49a4157c7bf1 100644
--- a/Documentation/ABI/testing/sysfs-class-rtrs-client
+++ b/Documentation/ABI/testing/sysfs-class-rtrs-client
@@ -34,6 +34,9 @@ Description:	Multipath policy specifies which path should be selected on each IO
 		min-inflight (1):
 		    select path with minimum inflights.
 
+		min-latency (2):
+		    select path with minimum latency.
+
 What:		/sys/class/rtrs-client/<session-name>/paths/
 Date:		Feb 2020
 KernelVersion:	5.7
@@ -95,6 +98,15 @@ KernelVersion:	5.7
 Contact:	Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
 Description:	RO, Contains the destination address of the path
 
+What:		/sys/class/rtrs-client/<session-name>/paths/<src@dst>/cur_latency
+Date:		Feb 2020
+KernelVersion:	5.7
+Contact:	Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
+Description:	RO, Contains the latency time calculated by the heart-beat messages.
+		Whenever the client sends heart-beat message, it checks the time gap
+		between sending the heart-beat message and receiving the ACK.
+		This value can be changed regularly.
+
 What:		/sys/class/rtrs-client/<session-name>/paths/<src@dst>/stats/reset_all
 Date:		Feb 2020
 KernelVersion:	5.7
-- 
2.25.1


  parent reply	other threads:[~2021-04-07 11:34 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-07 11:34 [PATCHv3 for-next 0/4] New multipath policy for RTRS client Gioh Kim
2021-04-07 11:34 ` [PATCHv3 for-next 1/4] RDMA/rtrs-clt: Add a minimum latency multipath policy Gioh Kim
2021-04-07 11:34 ` [PATCHv3 for-next 2/4] RDMA/rtrs-clt: new sysfs attribute to print the latency of each path Gioh Kim
2021-04-07 11:34 ` [PATCHv3 for-next 3/4] RDMA/rtrs-clt: Check state of the rtrs_clt_sess before reading its stats Gioh Kim
2021-04-07 11:34 ` Gioh Kim [this message]
2021-04-13 22:47 ` [PATCHv3 for-next 0/4] New multipath policy for RTRS client Jason Gunthorpe
2021-04-14  4:59   ` Gioh Kim
2021-04-27 18:59     ` Jason Gunthorpe
2021-04-28  4:59       ` Gioh Kim

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