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# Copyright (C) 2018-present MongoDB, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the Server Side Public License, version 1,
# as published by MongoDB, Inc.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# Server Side Public License for more details.
#
# You should have received a copy of the Server Side Public License
# along with this program. If not, see
# <http://www.mongodb.com/licensing/server-side-public-license>.
#
# As a special exception, the copyright holders give permission to link the
# code of portions of this program with the OpenSSL library under certain
# conditions as described in each individual source file and distribute
# linked combinations including the program with the OpenSSL library. You
# must comply with the Server Side Public License in all respects for
# all of the code used other than as permitted herein. If you modify file(s)
# with this exception, you may extend this exception to your version of the
# file(s), but you are not obligated to do so. If you do not wish to do so,
# delete this exception statement from your version. If you delete this
# exception statement from all source files in the program, then also delete
# it in the license file.
#
global:
cpp_namespace: "mongo"
cpp_includes:
- "mongo/db/snapshot_window_options.h"
imports:
- "mongo/idl/basic_types.idl"
server_parameters:
maxTargetSnapshotHistoryWindowInSeconds:
description: "Maximum target snapshot history window, in seconds"
set_at: [ startup, runtime ]
cpp_varname: "snapshotWindowParams.maxTargetSnapshotHistoryWindowInSeconds"
validator: { gte: 0 }
cachePressureThreshold:
description: "Cache pressure threshold"
set_at: [ startup, runtime ]
cpp_varname: "snapshotWindowParams.cachePressureThreshold"
validator:
gte: 0
lte: 100
snapshotWindowMultiplicativeDecrease:
description: "Snapshot window multiplicative decrease"
set_at: [ startup, runtime ]
cpp_varname: "snapshotWindowParams.snapshotWindowMultiplicativeDecrease"
validator:
gt: 0.0
lt: 1.0
snapshotWindowAdditiveIncreaseSeconds:
description: "Snapshot window multiplicative increase, in seconds"
set_at: [ startup, runtime ]
cpp_varname: "snapshotWindowParams.snapshotWindowAdditiveIncreaseSeconds"
validator: { gte: 1 }
minMillisBetweenSnapshotWindowInc:
description: "Minimum duration between snapshot window increment, in milliseconds"
set_at: [ startup, runtime ]
cpp_varname: "snapshotWindowParams.minMillisBetweenSnapshotWindowInc"
validator: { gte: 1 }
minMillisBetweenSnapshotWindowDec:
description: "Minimum duration between snapshot window decrement, in milliseconds"
set_at: [ startup, runtime ]
cpp_varname: "snapshotWindowParams.minMillisBetweenSnapshotWindowDec"
validator: { gte: 1 }
checkCachePressurePeriodSeconds:
description: "Check cache pressure period, in seconds"
set_at: [ startup, runtime ]
cpp_varname: "snapshotWindowParams.checkCachePressurePeriodSeconds"
validator: { gte: 1 }
on_update: std::ref(SnapshotWindowParams::observeCheckCachePressurePeriodSeconds)
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