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seaweedfs/weed/mount/page_writer/activity_score.go
Chris Lu d4566d4aaa
more solid weed mount (#4089)
* compare chunks by timestamp

* fix slab clearing error

* fix test compilation

* move oldest chunk to sealed, instead of by fullness

* lock on fh.entryViewCache

* remove verbose logs

* revert slat clearing

* less logs

* less logs

* track write and read by timestamp

* remove useless logic

* add entry lock on file handle release

* use mem chunk only, swap file chunk has problems

* comment out code that maybe used later

* add debug mode to compare data read and write

* more efficient readResolvedChunks with linked list

* small optimization

* fix test compilation

* minor fix on writer

* add SeparateGarbageChunks

* group chunks into sections

* turn off debug mode

* fix tests

* fix tests

* tmp enable swap file chunk

* Revert "tmp enable swap file chunk"

This reverts commit 985137ec47.

* simple refactoring

* simple refactoring

* do not re-use swap file chunk. Sealed chunks should not be re-used.

* comment out debugging facilities

* either mem chunk or swap file chunk is fine now

* remove orderedMutex  as *semaphore.Weighted

not found impactful

* optimize size calculation for changing large files

* optimize performance to avoid going through the long list of chunks

* still problems with swap file chunk

* rename

* tiny optimization

* swap file chunk save only successfully read data

* fix

* enable both mem and swap file chunk

* resolve chunks with range

* rename

* fix chunk interval list

* also change file handle chunk group when adding chunks

* pick in-active chunk with time-decayed counter

* fix compilation

* avoid nil with empty fh.entry

* refactoring

* rename

* rename

* refactor visible intervals to *list.List

* refactor chunkViews to *list.List

* add IntervalList for generic interval list

* change visible interval to use IntervalList in generics

* cahnge chunkViews to *IntervalList[*ChunkView]

* use NewFileChunkSection to create

* rename variables

* refactor

* fix renaming leftover

* renaming

* renaming

* add insert interval

* interval list adds lock

* incrementally add chunks to readers

Fixes:
1. set start and stop offset for the value object
2. clone the value object
3. use pointer instead of copy-by-value when passing to interval.Value
4. use insert interval since adding chunk could be out of order

* fix tests compilation

* fix tests compilation
2023-01-02 23:20:45 -08:00

40 lines
1,010 B
Go

package page_writer
import "time"
type ActivityScore struct {
lastActiveTsNs int64
decayedActivenessScore int64
}
func NewActivityScore() *ActivityScore {
return &ActivityScore{}
}
func (as ActivityScore) MarkRead() {
now := time.Now().UnixNano()
deltaTime := (now - as.lastActiveTsNs) >> 30 // about number of seconds
as.lastActiveTsNs = now
as.decayedActivenessScore = as.decayedActivenessScore>>deltaTime + 256
if as.decayedActivenessScore < 0 {
as.decayedActivenessScore = 0
}
}
func (as ActivityScore) MarkWrite() {
now := time.Now().UnixNano()
deltaTime := (now - as.lastActiveTsNs) >> 30 // about number of seconds
as.lastActiveTsNs = now
as.decayedActivenessScore = as.decayedActivenessScore>>deltaTime + 1024
if as.decayedActivenessScore < 0 {
as.decayedActivenessScore = 0
}
}
func (as ActivityScore) ActivityScore() int64 {
deltaTime := (time.Now().UnixNano() - as.lastActiveTsNs) >> 30 // about number of seconds
return as.decayedActivenessScore >> deltaTime
}