18051: Add manifest-parsing / fs-building benchmark.

Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tom@curii.com>

diff --git a/sdk/go/arvados/fs_collection_test.go b/sdk/go/arvados/fs_collection_test.go
index c032b07166fa6abd985f6c902c07c9e4c6e37f25..beb4d61fcf72ef7696952b3bf37179334ff3abd7 100644 (file)
--- a/sdk/go/arvados/fs_collection_test.go
+++ b/sdk/go/arvados/fs_collection_test.go
@@ -1433,6 +1433,31 @@ func (s *CollectionFSSuite) TestEdgeCaseManifests(c *check.C) {
        }
 }
 
+var bigmanifest = func() string {
+       var buf bytes.Buffer
+       for i := 0; i < 2000; i++ {
+               fmt.Fprintf(&buf, "./dir%d", i)
+               for i := 0; i < 100; i++ {
+                       fmt.Fprintf(&buf, " d41d8cd98f00b204e9800998ecf8427e+99999")
+               }
+               for i := 0; i < 2000; i++ {
+                       fmt.Fprintf(&buf, " 1200000:300000:file%d", i)
+               }
+               fmt.Fprintf(&buf, "\n")
+       }
+       return buf.String()
+}()
+
+func (s *CollectionFSSuite) BenchmarkParseManifest(c *check.C) {
+       DebugLocksPanicMode = false
+       c.Logf("test manifest is %d bytes", len(bigmanifest))
+       for i := 0; i < c.N; i++ {
+               fs, err := (&Collection{ManifestText: bigmanifest}).FileSystem(s.client, s.kc)
+               c.Check(err, check.IsNil)
+               c.Check(fs, check.NotNil)
+       }
+}
+
 func (s *CollectionFSSuite) checkMemSize(c *check.C, f File) {
        fn := f.(*filehandle).inode.(*filenode)
        var memsize int64