diff options
Diffstat (limited to 'cmd/bolt/stats.go')
| -rw-r--r-- | cmd/bolt/stats.go | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/cmd/bolt/stats.go b/cmd/bolt/stats.go index da344d0..6f8505a 100644 --- a/cmd/bolt/stats.go +++ b/cmd/bolt/stats.go @@ -1,13 +1,14 @@ package main import ( + "bytes" "os" "github.com/boltdb/bolt" ) -// Keys retrieves a list of keys for a given bucket. -func Stats(path, name string) { +// Collect stats for all top level buckets matching the prefix. +func Stats(path, prefix string) { if _, err := os.Stat(path); os.IsNotExist(err) { fatal(err) return @@ -21,15 +22,18 @@ func Stats(path, name string) { defer db.Close() err = db.View(func(tx *bolt.Tx) error { - // Find bucket. - b := tx.Bucket([]byte(name)) - if b == nil { - fatalf("bucket not found: %s", name) + var s bolt.BucketStats + var count int + var prefix = []byte(prefix) + tx.ForEach(func(name []byte, b *bolt.Bucket) error { + if bytes.HasPrefix(name, prefix) { + s.Add(b.Stats()) + count += 1 + } return nil - } + }) + printf("Aggregate statistics for %d buckets\n\n", count) - // Iterate over each key. - s := b.Stats() println("Page count statistics") printf("\tNumber of logical branch pages: %d\n", s.BranchPageN) printf("\tNumber of physical branch overflow pages: %d\n", s.BranchOverflowN) @@ -42,9 +46,11 @@ func Stats(path, name string) { println("Page size utilization") printf("\tBytes allocated for physical branch pages: %d\n", s.BranchAlloc) - printf("\tBytes actually used for branch data: %d\n", s.BranchInuse) + percentage := int(float32(s.BranchInuse) * 100.0 / float32(s.BranchAlloc)) + printf("\tBytes actually used for branch data: %d (%d%%)\n", s.BranchInuse, percentage) printf("\tBytes allocated for physical leaf pages: %d\n", s.LeafAlloc) - printf("\tBytes actually used for leaf data: %d\n", s.LeafInuse) + percentage = int(float32(s.LeafInuse) * 100.0 / float32(s.LeafAlloc)) + printf("\tBytes actually used for leaf data: %d (%d%%)\n", s.LeafInuse, percentage) return nil }) if err != nil { |