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[Qemu-devel] [RFC 6/6] docs: Document QMP event rate limiting
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] [RFC 6/6] docs: Document QMP event rate limiting |
Date: |
Fri, 25 Sep 2015 16:00:47 +0200 |
Signed-off-by: Markus Armbruster <address@hidden>
---
docs/qmp/qmp-events.txt | 12 ++++++++++++
docs/qmp/qmp-spec.txt | 5 +++++
2 files changed, 17 insertions(+)
diff --git a/docs/qmp/qmp-events.txt b/docs/qmp/qmp-events.txt
index d92cc48..d2f1ce4 100644
--- a/docs/qmp/qmp-events.txt
+++ b/docs/qmp/qmp-events.txt
@@ -28,6 +28,8 @@ Example:
"data": { "actual": 944766976 },
"timestamp": { "seconds": 1267020223, "microseconds": 435656 } }
+Note: this event is rate-limited.
+
BLOCK_IMAGE_CORRUPTED
---------------------
@@ -296,6 +298,8 @@ Example:
"data": { "reference": "usr1", "sector-num": 345435, "sectors-count": 5 },
"timestamp": { "seconds": 1344522075, "microseconds": 745528 } }
+Note: this event is rate-limited.
+
QUORUM_REPORT_BAD
-----------------
@@ -318,6 +322,8 @@ Example:
"data": { "node-name": "1.raw", "sector-num": 345435, "sectors-count": 5
},
"timestamp": { "seconds": 1344522075, "microseconds": 745528 } }
+Note: this event is rate-limited.
+
RESET
-----
@@ -358,6 +364,8 @@ Example:
"data": { "offset": 78 },
"timestamp": { "seconds": 1267020223, "microseconds": 435656 } }
+Note: this event is rate-limited.
+
SHUTDOWN
--------
@@ -632,6 +640,8 @@ Example:
"data": { "id": "channel0", "open": true },
"timestamp": { "seconds": 1401385907, "microseconds": 422329 } }
+Note: this event is rate-limited separately for each "id".
+
WAKEUP
------
@@ -662,3 +672,5 @@ Example:
Note: If action is "reset", "shutdown", or "pause" the WATCHDOG event is
followed respectively by the RESET, SHUTDOWN, or STOP events.
+
+Note: this event is rate-limited.
diff --git a/docs/qmp/qmp-spec.txt b/docs/qmp/qmp-spec.txt
index 4c28cd9..4cd6fdb 100644
--- a/docs/qmp/qmp-spec.txt
+++ b/docs/qmp/qmp-spec.txt
@@ -175,6 +175,11 @@ The format of asynchronous events is:
For a listing of supported asynchronous events, please, refer to the
qmp-events.txt file.
+Some events are rate-limited to at most one per second. If more
+events arrive within one second, all but the last one are dropped, and
+the last one is delayed. Rate-limiting applies to each kind of event
+separately.
+
2.5 QGA Synchronization
-----------------------
--
2.4.3
- [Qemu-devel] [RFC 1/6] monitor: Reduce casting of QAPI event QDict, (continued)