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pool.go
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pool.go
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package chunkenc
import (
"bytes"
"sync"
"github.com/prometheus/prometheus/util/pool"
"github.com/grafana/loki/v3/pkg/logproto"
)
var (
// BytesBufferPool is a bytes buffer used for lines decompressed.
// Buckets [0.5KB,1KB,2KB,4KB,8KB]
BytesBufferPool = pool.New(1<<9, 1<<13, 2, func(size int) interface{} { return make([]byte, 0, size) })
// LabelsPool is a matrix of bytes buffers used to store label names and values.
// Buckets [8, 16, 32, 64, 128, 256].
// Since we store label names and values, the number of labels we can store is the half the bucket size.
// So we will be able to store from 0 to 128 labels.
LabelsPool = pool.New(1<<3, 1<<8, 2, func(size int) interface{} { return make([][]byte, 0, size) })
SymbolsPool = pool.New(1<<3, 1<<8, 2, func(size int) interface{} { return make([]symbol, 0, size) })
// SamplesPool pooling array of samples [512,1024,...,16k]
SamplesPool = pool.New(1<<9, 1<<14, 2, func(size int) interface{} { return make([]logproto.Sample, 0, size) })
// Pool of crc32 hash
crc32HashPool = sync.Pool{
New: func() interface{} {
return newCRC32()
},
}
serializeBytesBufferPool = sync.Pool{
New: func() interface{} {
return &bytes.Buffer{}
},
}
// EncodeBufferPool is a pool used to binary encode.
EncodeBufferPool = sync.Pool{
New: func() interface{} {
return &encbuf{
b: make([]byte, 0, 256),
}
},
}
)