Collect some additional stats.

License: MIT
Signed-off-by: Kevin Atkinson <k@kevina.org>

Author: kevina

unixfs/hamt/fetcher.go

@@ -2,6 +2,7 @@ package hamt
 
 import (
 	"context"
+	"time"
 	//"fmt"
 	//"os"
 
@@ -29,7 +30,7 @@ type fetcher struct {
 
 	idle bool
 
-	done chan int
+	done chan batchJob
 
 	todoFirst *job            // do this job first since we are waiting for its results
 	todo      jobStack        // stack of jobs that still need to be done
@@ -43,6 +44,8 @@ type fetcher struct {
 
 	// other useful stats
 	cidCnt int
+
+	start time.Time
 }
 
 // batchSize must be at least as large as the largest number of cids
@@ -65,7 +68,7 @@ func startFetcher(ctx context.Context, dserv ipld.DAGService) *fetcher {
 		reqRes: make(chan *Shard),
 		result: make(chan result),
 		idle:   true,
-		done:   make(chan int),
+		done:   make(chan batchJob),
 		jobs:   make(map[*Shard]*job),
 	}
 	go f.mainLoop()
@@ -109,6 +112,7 @@ type jobStack struct {
 
 func (f *fetcher) mainLoop() {
 	var want *Shard
+	f.start = time.Now()
 	for {
 		select {
 		case id := <-f.reqRes:
@@ -142,8 +146,9 @@ func (f *fetcher) mainLoop() {
 				}
 				want = id
 			}
-		case cnt := <-f.done:
-			f.doneCnt += cnt
+		case bj := <-f.done:
+			f.doneCnt += len(bj.jobs)
+			f.cidCnt += len(bj.cids)
 			f.launch()
 			if want != nil {
 				j := f.jobs[want]
@@ -153,11 +158,10 @@ func (f *fetcher) mainLoop() {
 				}
 			}
 			log.Infof("fetcher: batch job done")
-			log.Infof("fetcher stats (done, hits, nearMisses, misses): %d %d %d %d", f.doneCnt, f.hits, f.nearMisses, f.misses)
+			f.mainLoopLogStats()
 		case <-f.ctx.Done():
 			log.Infof("fetcher: exiting")
-			log.Infof("fetcher stats (done, hits, nearMisses, misses): %d %d %d %d", f.doneCnt, f.hits, f.nearMisses, f.misses)
-			log.Infof("fetcher total number of CIDs retrieved: %d", f.cidCnt)
+			f.mainLoopLogStats()
 			return
 		}
 	}
@@ -173,7 +177,6 @@ func (f *fetcher) mainLoopAddJob(hamt *Shard) *job {
 		// programmer error
 		panic("job size larger than batchSize")
 	}
-	f.cidCnt += len(j.cids)
 	f.todo.push(j)
 	f.jobs[j.id] = j
 	return j
@@ -197,6 +200,12 @@ func (f *fetcher) mainLoopSendResult(j *job) {
 	}
 }
 
+func (f *fetcher) mainLoopLogStats() {
+	log.Infof("fetcher stats (cids, done, hits, nearMisses, misses): %d %d %d %d %d", f.cidCnt, f.doneCnt, f.hits, f.nearMisses, f.misses)
+	elapsed := time.Now().Sub(f.start).Seconds()
+	log.Infof("fetcher perf (cids/sec, jobs/sec) %f %f", float64(f.cidCnt)/elapsed, float64(f.doneCnt+f.hits+f.nearMisses+f.misses)/elapsed)
+}
+
 type batchJob struct {
 	cids []*cid.Cid
 	jobs []*job
@@ -252,7 +261,7 @@ func (f *fetcher) launch() {
 		for _, job := range bj.jobs {
 			job.res = fetched
 		}
-		f.done <- len(bj.jobs)
+		f.done <- bj
 	}()
 }