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optimize trySched

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This commit is contained in:
zgfzgf 2020-09-25 22:41:29 +08:00
parent 60e950015c
commit 3207bc4704
1 changed files with 16 additions and 14 deletions
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30
extern/sector-storage/sched.go vendored
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@ -318,26 +318,28 @@ func (sh *scheduler) trySched() {
*/ */
windows := make([]schedWindow, len(sh.openWindows))
acceptableWindows := make([][]int, sh.schedQueue.Len())
log.Debugf("SCHED %d queued; %d open windows", sh.schedQueue.Len(), len(windows))
sh.workersLk.RLock() sh.workersLk.RLock()
defer sh.workersLk.RUnlock() defer sh.workersLk.RUnlock()
if len(sh.openWindows) == 0 {
windowsLen := len(sh.openWindows)
queuneLen := sh.schedQueue.Len()
log.Debugf("SCHED %d queued; %d open windows", queuneLen, windowsLen)
if windowsLen == 0 || queuneLen == 0 {
// nothing to schedule on // nothing to schedule on
return return
} }
windows := make([]schedWindow, windowsLen)
acceptableWindows := make([][]int, queuneLen)
// Step 1 // Step 1
concurrency := len(sh.openWindows) throttle := make(chan struct{}, windowsLen)
throttle := make(chan struct{}, concurrency)
var wg sync.WaitGroup var wg sync.WaitGroup
wg.Add(sh.schedQueue.Len()) wg.Add(queuneLen)
for i := 0; i < queuneLen; i++ {
for i := 0; i < sh.schedQueue.Len(); i++ {
throttle <- struct{}{} throttle <- struct{}{}
go func(sqi int) { go func(sqi int) {
@ -417,9 +419,9 @@ func (sh *scheduler) trySched() {
// Step 2 // Step 2
scheduled := 0 scheduled := 0
rmQueue := make([]int, 0, sh.schedQueue.Len()) rmQueue := make([]int, 0, queuneLen)
for sqi := 0; sqi < sh.schedQueue.Len(); sqi++ { for sqi := 0; sqi < queuneLen; sqi++ {
task := (*sh.schedQueue)[sqi] task := (*sh.schedQueue)[sqi]
needRes := ResourceTable[task.taskType][sh.spt] needRes := ResourceTable[task.taskType][sh.spt]
@ -488,7 +490,7 @@ func (sh *scheduler) trySched() {
} }
// Rewrite sh.openWindows array, removing scheduled windows // Rewrite sh.openWindows array, removing scheduled windows
newOpenWindows := make([]*schedWindowRequest, 0, len(sh.openWindows)-len(scheduledWindows)) newOpenWindows := make([]*schedWindowRequest, 0, windowsLen-len(scheduledWindows))
for wnd, window := range sh.openWindows { for wnd, window := range sh.openWindows {
if _, scheduled := scheduledWindows[wnd]; scheduled { if _, scheduled := scheduledWindows[wnd]; scheduled {
// keep unscheduled windows open // keep unscheduled windows open