mirror of
https://github.com/k3s-io/k3s.git
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35 lines
1.2 KiB
Go
35 lines
1.2 KiB
Go
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// Copyright 2015 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package backend
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import (
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"syscall"
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bolt "go.etcd.io/bbolt"
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)
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// syscall.MAP_POPULATE on linux 2.6.23+ does sequential read-ahead
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// which can speed up entire-database read with boltdb. We want to
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// enable MAP_POPULATE for faster key-value store recovery in storage
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// package. If your kernel version is lower than 2.6.23
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// (https://github.com/torvalds/linux/releases/tag/v2.6.23), mmap might
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// silently ignore this flag. Please update your kernel to prevent this.
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var boltOpenOptions = &bolt.Options{
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MmapFlags: syscall.MAP_POPULATE,
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NoFreelistSync: true,
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}
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func (bcfg *BackendConfig) mmapSize() int { return int(bcfg.MmapSize) }
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