68 lines
2.6 KiB
Go
68 lines
2.6 KiB
Go
// Copyright 2018 The Prometheus Authors
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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 iostats
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// IODevice contains identifying information for an I/O device
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type IODevice struct {
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MajorNumber uint32
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MinorNumber uint32
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DeviceName string
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}
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// IOStats models the iostats data described in the kernel documentation
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// https://www.kernel.org/doc/Documentation/iostats.txt,
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// https://www.kernel.org/doc/Documentation/block/stat.txt,
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// and https://www.kernel.org/doc/Documentation/ABI/testing/procfs-diskstats
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type IOStats struct {
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// ReadIOs is the number of reads completed successfully.
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ReadIOs uint64
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// ReadMerges is the number of reads merged. Reads and writes
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// which are adjacent to each other may be merged for efficiency.
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ReadMerges uint64
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// ReadSectors is the total number of sectors read successfully.
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ReadSectors uint64
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// ReadTicks is the total number of milliseconds spent by all reads.
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ReadTicks uint64
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// WriteIOs is the total number of writes completed successfully.
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WriteIOs uint64
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// WriteMerges is the number of reads merged.
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WriteMerges uint64
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// WriteSectors is the total number of sectors written successfully.
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WriteSectors uint64
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// WriteTicks is the total number of milliseconds spent by all writes.
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WriteTicks uint64
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// IOsInProgress is number of I/Os currently in progress.
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IOsInProgress uint64
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// IOsTotalTicks is the number of milliseconds spent doing I/Os.
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// This field increases so long as IosInProgress is nonzero.
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IOsTotalTicks uint64
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// WeightedIOTicks is the weighted number of milliseconds spent doing I/Os.
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// This can also be used to estimate average queue wait time for requests.
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WeightedIOTicks uint64
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// DiscardIOs is the total number of discards completed successfully.
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DiscardIOs uint64
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// DiscardMerges is the number of discards merged.
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DiscardMerges uint64
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// DiscardSectors is the total number of sectors discarded successfully.
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DiscardSectors uint64
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// DiscardTicks is the total number of milliseconds spent by all discards.
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DiscardTicks uint64
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}
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// IODeviceStats combines IODevice and IOStats
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type IODeviceStats struct {
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IODevice
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IOStats
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}
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