tls allocations

tls_byte_buffer

[david@sjc1-b4-8 ~]$ go tool pprof  $HOME/bin/hwy-fetcher http://localhost:6060/debug/pprof/heap 
Fetching profile from http://localhost:6060/debug/pprof/heap
Saved profile in /home/david/pprof/pprof.hwy-fetcher.localhost:6060.inuse_objects.inuse_space.062.pb.gz
Entering interactive mode (type "help" for commands)
(pprof) top 
12612.08MB of 14824.44MB total (85.08%)
Dropped 799 nodes (cum <= 74.12MB)
Showing top 10 nodes out of 87 (cum >= 201.56MB)
      flat  flat%   sum%        cum   cum%
 6202.85MB 41.84% 41.84%  6202.85MB 41.84%  crypto/tls.(*block).reserve
 1432.71MB  9.66% 51.51%  1545.80MB 10.43%  net/http.(*Transport).dialConn
 1096.04MB  7.39% 58.90%  1096.04MB  7.39%  bytes.makeSlice
  998.50MB  6.74% 65.64%  1059.50MB  7.15%  net/textproto.MIMEHeader.Set
  966.28MB  6.52% 72.15%  1012.28MB  6.83%  net/textproto.(*Reader).ReadMIMEHeader
  614.01MB  4.14% 76.30%  1126.58MB  7.60%  crypto/x509.parseCertificate
  402.05MB  2.71% 79.01%  1136.32MB  7.67%  crypto/tls.(*Conn).readHandshake
  369.57MB  2.49% 81.50%  7424.22MB 50.08%  main.(*Requestor).reachOut
  328.52MB  2.22% 83.72%   328.52MB  2.22%  reflect.unsafe_NewArray
  201.56MB  1.36% 85.08%   201.56MB  1.36%  net/textproto.(*Reader).ReadLine
(pprof) list reserve
Total: 14.48GB
ROUTINE ======================== crypto/tls.(*block).reserve in /usr/local/go/src/crypto/tls/conn.go
    6.06GB     6.06GB (flat, cum) 41.84% of Total
         .          .    439:		m = 1024
         .          .    440:	}
         .          .    441:	for m < n {
         .          .    442:		m *= 2
         .          .    443:	}
    6.06GB     6.06GB    444:	data := make([]byte, len(b.data), m)
         .          .    445:	copy(data, b.data)
         .          .    446:	b.data = data
         .          .    447:}
         .          .    448:
         .          .    449:// readFromUntil reads from r into b until b contains at least n bytes
(pprof) 

oh, also go version might be helpful:

david@sjc1-b4-8 ~]$ go version 
go version go1.6.2 linux/amd64