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61 lines
2.2 KiB
Go
61 lines
2.2 KiB
Go
// Copyright (C) 2019-2025 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
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// with the License. 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 distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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//go:build linux || darwin
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package segcore
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/*
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#cgo pkg-config: milvus_core
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#include <stdlib.h>
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#include "monitor/jemalloc_stats_c.h"
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*/
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import "C"
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// JemallocStats represents comprehensive jemalloc memory statistics
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// All sizes are in bytes
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type JemallocStats struct {
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// Core memory metrics (from jemalloc)
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Allocated uint64 // Total bytes allocated by the application
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Active uint64 // Total bytes in active pages (includes fragmentation)
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Metadata uint64 // Total bytes dedicated to jemalloc metadata
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Resident uint64 // Total bytes in physically resident data pages (RSS)
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Mapped uint64 // Total bytes in virtual memory mappings
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Retained uint64 // Total bytes in retained virtual memory (could be returned to OS)
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// Derived metrics (calculated by C code)
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Fragmentation uint64 // Internal fragmentation (active - allocated)
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Overhead uint64 // Memory overhead (resident - active)
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// Status
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Success bool // Whether stats were successfully retrieved
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}
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// GetJemallocStats retrieves comprehensive jemalloc memory statistics
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// Returns JemallocStats with detailed memory information
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// On platforms without jemalloc support, all metrics will be 0 and Success will be false
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func GetJemallocStats() JemallocStats {
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cStats := C.GetJemallocStats()
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return JemallocStats{
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Allocated: uint64(cStats.allocated),
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Active: uint64(cStats.active),
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Metadata: uint64(cStats.metadata),
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Resident: uint64(cStats.resident),
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Mapped: uint64(cStats.mapped),
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Retained: uint64(cStats.retained),
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Fragmentation: uint64(cStats.fragmentation),
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Overhead: uint64(cStats.overhead),
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Success: bool(cStats.success),
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}
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}
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