title: How to interpret pprof output?
body: <p>I'm trying to profile an application written in go which apparently uses about 256 virtual memory (checked using <code>ps aux</code>). I'm trying to use <a href="https://golang.org/pkg/net/http/pprof/" rel="noreferrer">pprof</a> package and see what functions allocate/consume most of the memory but the results make no sense to me. <code>pprof top</code> seems to list only the runtime functions. Can someone help me understand this data?</p>
  
  <pre><code>ps aux |grep android
  root      4584  3.4  0.1 500244 29536 pts/1    Sl+  17:21   0:38 ./android -logtostderr
  </code></pre>
  
  <p>go tool pprof <a href="http://localhost:6060/debug/pprof/heap" rel="noreferrer">http://localhost:6060/debug/pprof/heap</a></p>
  
  <pre><code>/pprof.localhost:6060.inuse_objects.inuse_space.008.pb.gz
  Entering interactive mode (type "help" for commands)
  (pprof) top
  512.19kB of 512.19kB total (  100%)
  Dropped 19 nodes (cum &lt;= 2.56kB)
        flat  flat%   sum%        cum   cum%
    512.19kB   100%   100%   512.19kB   100%  runtime.malg
           0     0%   100%   512.19kB   100%  runtime.mcommoninit
           0     0%   100%   512.19kB   100%  runtime.mpreinit
           0     0%   100%   512.19kB   100%  runtime.rt0_go
           0     0%   100%   512.19kB   100%  runtime.schedinit
  (pprof) 
  </code></pre>
  
  <p><a href="http://localhost:6060/debug/pprof/heap?debug=1" rel="noreferrer">http://localhost:6060/debug/pprof/heap?debug=1</a></p>
  
  <pre><code>heap profile: 3: 49632 [3: 49632] @ heap/1048576
  1: 49152 [1: 49152] @ 0x412c62 0x411bc9 0x6fd8c8 0x649c40 0x5497e6 0x409ad2 0x43615f 0x4669c1
  #   0x6fd8c8    html.init+0xe8          /usr/local/gosrc/src/html/entity.go:2154
  #   0x649c40    html/template.init+0x70     /usr/local/gosrc/src/html/template/url.go:105
  #   0x5497e6    net/http/pprof.init+0x56    /usr/local/gosrc/src/net/http/pprof/pprof.go:239
  #   0x409ad2    main.init+0x92          /root/go/src/github.com/ginkoob/devmg/local/android/local.go:236
  #   0x43615f    runtime.main+0x27f      /usr/local/gosrc/src/runtime/proc.go:100
  
  1: 384 [1: 384] @ 0x43d0e7 0x4317ef 0x437700 0x4372a9 0x464182
  #   0x43d0e7    runtime.malg+0x27       /usr/local/gosrc/src/runtime/proc1.go:2172
  #   0x4317ef    runtime.mpreinit+0x1f       /usr/local/gosrc/src/runtime/os1_linux.go:197
  #   0x437700    runtime.mcommoninit+0x100   /usr/local/gosrc/src/runtime/proc1.go:114
  #   0x4372a9    runtime.schedinit+0x79      /usr/local/gosrc/src/runtime/proc1.go:57
  #   0x464182    runtime.rt0_go+0x132        /usr/local/gosrc/src/runtime/asm_amd64.s:109
  
  1: 96 [1: 96] @ 0x449005 0x46a114 0x468625 0x467e71 0x4069d5 0x436190 0x4669c1
  #   0x46a114    golang.org/x/mobile/gl.DoWork+0x54  /root/go/src/golang.org/x/mobile/gl/work.go:82
  #   0x468625    golang.org/x/mobile/app.main+0x1d5  /root/go/src/golang.org/x/mobile/app/x11.go:65
  #   0x467e71    golang.org/x/mobile/app.Main+0x21   /root/go/src/golang.org/x/mobile/app/app.go:22
  #   0x4069d5    main.main+0x75              /root/go/src/github.com/ginkoob/devmg/local/android/local.go:65
  #   0x436190    runtime.main+0x2b0          /usr/local/gosrc/src/runtime/proc.go:111
  
  0: 0 [0: 0] @ 0x449005 0x6529f5 0x652936 0x64e2c4 0x54932e 0x549540 0x5222aa 0x523b0d 0x52457e 0x521d6e 0x4669c1
  #   0x6529f5    runtime/pprof.writeGoroutineStacks+0x45 /usr/local/gosrc/src/runtime/pprof/pprof.go:514
  #   0x652936    runtime/pprof.writeGoroutine+0x46   /usr/local/gosrc/src/runtime/pprof/pprof.go:505
  #   0x64e2c4    runtime/pprof.(*Profile).WriteTo+0xd4   /usr/local/gosrc/src/runtime/pprof/pprof.go:236
  #   0x54932e    net/http/pprof.handler.ServeHTTP+0x37e  /usr/local/gosrc/src/net/http/pprof/pprof.go:199
  #   0x549540    net/http/pprof.Index+0x200      /usr/local/gosrc/src/net/http/pprof/pprof.go:211
  #   0x5222aa    net/http.HandlerFunc.ServeHTTP+0x3a /usr/local/gosrc/src/net/http/server.go:1422
  #   0x523b0d    net/http.(*ServeMux).ServeHTTP+0x17d    /usr/local/gosrc/src/net/http/server.go:1699
  #   0x52457e    net/http.serverHandler.ServeHTTP+0x19e  /usr/local/gosrc/src/net/http/server.go:1862
  #   0x521d6e    net/http.(*conn).serve+0xbee        /usr/local/gosrc/src/net/http/server.go:1361
  
  
  # runtime.MemStats
  # Alloc = 2701264
  # TotalAlloc = 2701264
  # Sys = 7145720
  # Lookups = 18
  # Mallocs = 19841
  # Frees = 0
  # HeapAlloc = 2701264
  # HeapSys = 3637248
  # HeapIdle = 262144
  # HeapInuse = 3375104
  # HeapReleased = 0
  # HeapObjects = 19841
  # Stack = 557056 / 557056
  # MSpan = 28896 / 32768
  # MCache = 4832 / 16384
  # BuckHashSys = 1443979
  # NextGC = 4194304
  # PauseNs = [0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]
  # NumGC = 0
  # EnableGC = true
  # DebugGC = false
  </code></pre>
  
  <p><a href="http://localhost:6060/debug/pprof/goroutine?debug=1" rel="noreferrer">http://localhost:6060/debug/pprof/goroutine?debug=1</a></p>
  
  <pre><code>goroutine profile: total 31
  1 @ 0x652ba8 0x652983 0x64e2c4 0x54932e 0x549540 0x5222aa 0x523b0d 0x52457e 0x521d6e 0x4669c1
  #   0x652ba8    runtime/pprof.writeRuntimeProfile+0xb8  /usr/local/gosrc/src/runtime/pprof/pprof.go:545
  #   0x652983    runtime/pprof.writeGoroutine+0x93   /usr/local/gosrc/src/runtime/pprof/pprof.go:507
  #   0x64e2c4    runtime/pprof.(*Profile).WriteTo+0xd4   /usr/local/gosrc/src/runtime/pprof/pprof.go:236
  #   0x54932e    net/http/pprof.handler.ServeHTTP+0x37e  /usr/local/gosrc/src/net/http/pprof/pprof.go:199
  #   0x549540    net/http/pprof.Index+0x200      /usr/local/gosrc/src/net/http/pprof/pprof.go:211
  #   0x5222aa    net/http.HandlerFunc.ServeHTTP+0x3a /usr/local/gosrc/src/net/http/server.go:1422
  #   0x523b0d    net/http.(*ServeMux).ServeHTTP+0x17d    /usr/local/gosrc/src/net/http/server.go:1699
  #   0x52457e    net/http.serverHandler.ServeHTTP+0x19e  /usr/local/gosrc/src/net/http/server.go:1862
  #   0x521d6e    net/http.(*conn).serve+0xbee        /usr/local/gosrc/src/net/http/server.go:1361
  
  1 @ 0x436573 0x444ce4 0x444242 0x46871a 0x467e71 0x4069d5 0x436190 0x4669c1
  #   0x46871a    golang.org/x/mobile/app.main+0x2ca  /root/go/src/golang.org/x/mobile/app/x11.go:61
  #   0x467e71    golang.org/x/mobile/app.Main+0x21   /root/go/src/golang.org/x/mobile/app/app.go:22
  #   0x4069d5    main.main+0x75              /root/go/src/github.com/nme/devmg/local/android/local.go:65
  #   0x436190    runtime.main+0x2b0          /usr/local/gosrc/src/runtime/proc.go:111
  
  1 @ 0x4669c1
  
  1 @ 0x436573 0x436634 0x436378 0x4669c1
  #   0x436573    runtime.gopark+0x163        /usr/local/gosrc/src/runtime/proc.go:186
  #   0x436634    runtime.goparkunlock+0x54   /usr/local/gosrc/src/runtime/proc.go:191
  #   0x436378    runtime.forcegchelper+0xb8  /usr/local/gosrc/src/runtime/proc.go:152
  
  1 @ 0x436573 0x436634 0x42630d 0x4669c1
  #   0x436573    runtime.gopark+0x163        /usr/local/gosrc/src/runtime/proc.go:186
  #   0x436634    runtime.goparkunlock+0x54   /usr/local/gosrc/src/runtime/proc.go:191
  #   0x42630d    runtime.bgsweep+0x14d       /usr/local/gosrc/src/runtime/mgcsweep.go:67
  
  1 @ 0x436573 0x436634 0x41e04a 0x4669c1
  #   0x436573    runtime.gopark+0x163        /usr/local/gosrc/src/runtime/proc.go:186
  #   0x436634    runtime.goparkunlock+0x54   /usr/local/gosrc/src/runtime/proc.go:191
  #   0x41e04a    runtime.runfinq+0xaa        /usr/local/gosrc/src/runtime/mfinal.go:154
  
  1 @ 0x436573 0x444ce4 0x444242 0x4691e7 0x4669c1
  #   0x4691e7    golang.org/x/mobile/app.pump.func1+0x527    /root/go/src/golang.org/x/mobile/app/app.go:138
  
  1 @ 0x436573 0x436634 0x40d611 0x40ccfb 0x4acb57 0x4669c1
  #   0x4acb57    github.com/golang/glog.(*loggingT).flushDaemon+0x67 /root/go/src/github.com/golang/glog/glog.go:882
  
  1 @ 0x4173be 0x45142e 0x4669c1
  #   0x4173be    runtime.notetsleepg+0x4e    /usr/local/gosrc/src/runtime/lock_futex.go:203
  #   0x45142e    runtime.timerproc+0xde      /usr/local/gosrc/src/runtime/time.go:209
  
  1 @ 0x436573 0x444ce4 0x444242 0x533327 0x4669c1
  #   0x533327    net/http.(*persistConn).readLoop+0xac7  /usr/local/gosrc/src/net/http/transport.go:983
  
  1 @ 0x436573 0x43069e 0x42fb60 0x4cd99a 0x4cda06 0x4d158c 0x4ef94d 0x5254d1 0x524853 0x524716 0x524daf 0x408e1c 0x4669c1
  #   0x42fb60    net.runtime_pollWait+0x60           /usr/local/gosrc/src/runtime/netpoll.go:157
  #   0x4cd99a    net.(*pollDesc).Wait+0x3a           /usr/local/gosrc/src/net/fd_poll_runtime.go:73
  #   0x4cda06    net.(*pollDesc).WaitRead+0x36           /usr/local/gosrc/src/net/fd_poll_runtime.go:78
  #   0x4d158c    net.(*netFD).accept+0x27c           /usr/local/gosrc/src/net/fd_unix.go:408
  #   0x4ef94d    net.(*TCPListener).AcceptTCP+0x4d       /usr/local/gosrc/src/net/tcpsock_posix.go:254
  #   0x5254d1    net/http.tcpKeepAliveListener.Accept+0x41   /usr/local/gosrc/src/net/http/server.go:2138
  #   0x524853    net/http.(*Server).Serve+0xb3           /usr/local/gosrc/src/net/http/server.go:1887
  #   0x524716    net/http.(*Server).ListenAndServe+0x136     /usr/local/gosrc/src/net/http/server.go:1877
  #   0x524daf    net/http.ListenAndServe+0x8f            /usr/local/gosrc/src/net/http/server.go:1967
  #   0x408e1c    main.main.func1+0x3c                /root/go/src/github.com/nme/devmg/local/android/local.go:40
  
  1 @ 0x436573 0x43069e 0x42fb60 0x4cd99a 0x4cda06 0x4cf74a 0x4e3c34 0x5c0c39 0x5c14aa 0x4b0cee 0x4b5b43 0x49e028 0x49a8d0 0x49b173 0x49cf47 0x4669c1
  #   0x42fb60    net.runtime_pollWait+0x60                       /usr/local/gosrc/src/runtime/netpoll.go:157
  #   0x4cd99a    net.(*pollDesc).Wait+0x3a                       /usr/local/gosrc/src/net/fd_poll_runtime.go:73
  #   0x4cda06    net.(*pollDesc).WaitRead+0x36                       /usr/local/gosrc/src/net/fd_poll_runtime.go:78
  #   0x4cf74a    net.(*netFD).Read+0x23a                         /usr/local/gosrc/src/net/fd_unix.go:232
  #   0x4e3c34    net.(*conn).Read+0xe4                           /usr/local/gosrc/src/net/net.go:132
  #   0x5c0c39    bufio.(*Reader).fill+0x1e9                      /usr/local/gosrc/src/bufio/bufio.go:97
  #   0x5c14aa    bufio.(*Reader).ReadByte+0x7a                       /usr/local/gosrc/src/bufio/bufio.go:229
  #   0x4b0cee    golang.org/x/net/websocket.hybiFrameReaderFactory.NewFrameReader+0xbe   /root/go/src/golang.org/x/net/websocket/hybi.go:126
  #   0x4b5b43    golang.org/x/net/websocket.Codec.Receive+0x183              /root/go/src/golang.org/x/net/websocket/websocket.go:315
  #   0x49e028    golang.org/x/net/websocket.(Codec).Receive-fm+0x58          /root/go/src/github.com/nme/socks/ws.go:420
  #   0x49a8d0    github.com/nme/socks.(*WSConn).execute+0x210            /root/go/src/github.com/nme/socks/ws.go:389
  #   0x49b173    github.com/nme/socks.(*WSConn).receiveMessage+0x203         /root/go/src/github.com/nme/socks/ws.go:420
  #   0x49cf47    github.com/nme/socks.(*WSConn).Setup.func3+0x117            /root/go/src/github.com/nme/socks/ws.go:221
  
  1 @ 0x436573 0x436634 0x40d611 0x40ccfb 0x4080af 0x406fd8 0x4092e7 0x46937f 0x4669c1
  #   0x4080af    main.startSocks+0x3bf           /root/go/src/github.com/nme/devmg/local/android/local.go:151
  #   0x406fd8    main.startClient+0x5d8          /root/go/src/github.com/nme/devmg/local/android/local.go:82
  #   0x4092e7    main.main.func2+0x227           /root/go/src/github.com/nme/devmg/local/android/local.go:64
  #   0x46937f    golang.org/x/mobile/app.main.func1+0x6f /root/go/src/golang.org/x/mobile/app/x11.go:51
  
  1 @ 0x436573 0x444ce4 0x444242 0x533c4c 0x4669c1
  #   0x533c4c    net/http.(*persistConn).writeLoop+0x40c /usr/local/gosrc/src/net/http/transport.go:1016
  
  1 @ 0x436573 0x436634 0x40d182 0x40ccfb 0x408f63 0x4669c1
  #   0x408f63    main.main.func2.1+0x73  /root/go/src/github.com/nme/devmg/local/android/local.go:47
  
  1 @ 0x436573 0x444ce4 0x444242 0x49dcee 0x4669c1
  #   0x49dcee    github.com/nme/socks.(*WSConn).Setup.func4+0x86e    /root/go/src/github.com/nme/socks/ws.go:256
  
  1 @ 0x436573 0x444ce4 0x444242 0x49c7a5 0x4669c1
  #   0x49c7a5    github.com/nme/socks.SetKeepAlive.func1+0x215   /root/go/src/github.com/nme/socks/ws.go:32
  
  1 @ 0x436573 0x436634 0x40d611 0x40ccfb 0x4072c6 0x4669c1
  #   0x4072c6    main.WaitCmd+0xc6   /root/go/src/github.com/nme/devmg/local/android/local.go:95
  
  1 @ 0x436573 0x444ce4 0x444242 0x4998aa 0x4669c1
  #   0x4998aa    github.com/nme/socks.(*Router).ListenAndServe+0x91a /root/go/src/github.com/nme/socks/ws.go:124
  
  1 @ 0x436573 0x444ce4 0x444242 0x49a173 0x4669c1
  #   0x49a173    github.com/nme/socks.(*WSConn).Setup+0x753  /root/go/src/github.com/nme/socks/ws.go:186
  
  1 @ 0x436573 0x436634 0x40d611 0x40ccfb 0x49b3ea 0x4669c1
  #   0x49b3ea    github.com/nme/socks.(*Nic).Dial.func1+0x9a /root/go/src/github.com/nme/socks/conn.go:34
  
  3 @ 0x436573 0x444ce4 0x444242 0x49cd50 0x4669c1
  #   0x49cd50    github.com/nme/socks.(*Router).ListenAndServe.func1+0x590   /root/go/src/github.com/nme/socks/ws.go:96
  
  1 @ 0x436573 0x43069e 0x42fb60 0x4cd99a 0x4cda06 0x4cf74a 0x4e3c34 0x51a734 0x581f7d 0x5c0c39 0x5c1aaa 0x5c1b23 0x6285f1 0x628360 0x515496 0x51d83f 0x5218a7 0x4669c1
  #   0x42fb60    net.runtime_pollWait+0x60           /usr/local/gosrc/src/runtime/netpoll.go:157
  #   0x4cd99a    net.(*pollDesc).Wait+0x3a           /usr/local/gosrc/src/net/fd_poll_runtime.go:73
  #   0x4cda06    net.(*pollDesc).WaitRead+0x36           /usr/local/gosrc/src/net/fd_poll_runtime.go:78
  #   0x4cf74a    net.(*netFD).Read+0x23a             /usr/local/gosrc/src/net/fd_unix.go:232
  #   0x4e3c34    net.(*conn).Read+0xe4               /usr/local/gosrc/src/net/net.go:132
  #   0x51a734    net/http.(*liveSwitchReader).Read+0xa4      /usr/local/gosrc/src/net/http/server.go:219
  #   0x581f7d    io.(*LimitedReader).Read+0xbd           /usr/local/gosrc/src/io/io.go:427
  #   0x5c0c39    bufio.(*Reader).fill+0x1e9          /usr/local/gosrc/src/bufio/bufio.go:97
  #   0x5c1aaa    bufio.(*Reader).ReadSlice+0x21a         /usr/local/gosrc/src/bufio/bufio.go:328
  #   0x5c1b23    bufio.(*Reader).ReadLine+0x53           /usr/local/gosrc/src/bufio/bufio.go:357
  #   0x6285f1    net/textproto.(*Reader).readLineSlice+0x81  /usr/local/gosrc/src/net/textproto/reader.go:55
  #   0x628360    net/textproto.(*Reader).ReadLine+0x40       /usr/local/gosrc/src/net/textproto/reader.go:36
  #   0x515496    net/http.ReadRequest+0xb6           /usr/local/gosrc/src/net/http/request.go:653
  #   0x51d83f    net/http.(*conn).readRequest+0x32f      /usr/local/gosrc/src/net/http/server.go:633
  #   0x5218a7    net/http.(*conn).serve+0x727            /usr/local/gosrc/src/net/http/server.go:1319
  
  1 @ 0x436573 0x43069e 0x42fb60 0x4cd99a 0x4cda06 0x4cf74a 0x4e3c34 0x51a734 0x581f7d 0x5c0c39 0x5c0e5c 0x51d7cb 0x5218a7 0x4669c1
  #   0x42fb60    net.runtime_pollWait+0x60       /usr/local/gosrc/src/runtime/netpoll.go:157
  #   0x4cd99a    net.(*pollDesc).Wait+0x3a       /usr/local/gosrc/src/net/fd_poll_runtime.go:73
  #   0x4cda06    net.(*pollDesc).WaitRead+0x36       /usr/local/gosrc/src/net/fd_poll_runtime.go:78
  #   0x4cf74a    net.(*netFD).Read+0x23a         /usr/local/gosrc/src/net/fd_unix.go:232
  #   0x4e3c34    net.(*conn).Read+0xe4           /usr/local/gosrc/src/net/net.go:132
  #   0x51a734    net/http.(*liveSwitchReader).Read+0xa4  /usr/local/gosrc/src/net/http/server.go:219
  #   0x581f7d    io.(*LimitedReader).Read+0xbd       /usr/local/gosrc/src/io/io.go:427
  #   0x5c0c39    bufio.(*Reader).fill+0x1e9      /usr/local/gosrc/src/bufio/bufio.go:97
  #   0x5c0e5c    bufio.(*Reader).Peek+0xcc       /usr/local/gosrc/src/bufio/bufio.go:132
  #   0x51d7cb    net/http.(*conn).readRequest+0x2bb  /usr/local/gosrc/src/net/http/server.go:629
  #   0x5218a7    net/http.(*conn).serve+0x727        /usr/local/gosrc/src/net/http/server.go:1319
  
  1 @ 0x436573 0x436634 0x42051b 0x4669c1
  #   0x436573    runtime.gopark+0x163        /usr/local/gosrc/src/runtime/proc.go:186
  #   0x436634    runtime.goparkunlock+0x54   /usr/local/gosrc/src/runtime/proc.go:191
  #   0x42051b    runtime.backgroundgc+0x8b   /usr/local/gosrc/src/runtime/mgc.go:894
  
  4 @ 0x436573 0x421717 0x4669c1
  #   0x436573    runtime.gopark+0x163        /usr/local/gosrc/src/runtime/proc.go:186
  #   0x421717    runtime.gcBgMarkWorker+0xf7 /usr/local/gosrc/src/runtime/mgc.go:1283
  </code></pre>
  
  <p>4584 is the PID of the application.
  cat /proc/4584/status </p>
  
  <pre><code>Name:   android
  State:  S (sleeping)
  Tgid:   4584
  Ngid:   0
  Pid:    4584
  PPid:   2776
  TracerPid:  0
  Uid:    0   0   0   0
  Gid:    0   0   0   0
  FDSize: 256
  Groups: 0 
  NStgid: 4584
  NSpid:  4584
  NSpgid: 4584
  NSsid:  2776
  VmPeak:   631316 kB
  VmSize:   573976 kB
  VmLck:         0 kB
  VmPin:         0 kB
  VmHWM:     30060 kB
  VmRSS:     29344 kB
  VmData:   487492 kB
  VmStk:       136 kB
  VmExe:      6704 kB
  VmLib:     13404 kB
  VmPTE:       288 kB
  VmPMD:        20 kB
  VmSwap:        0 kB
  Threads:    10
  SigQ:   3/62942
  SigPnd: 0000000000000000
  ShdPnd: 0000000000000000
  SigBlk: 0000000000000000
  SigIgn: 0000000000000000
  SigCgt: ffffffffffc1feff
  CapInh: 0000000000000000
  CapPrm: 0000003fffffffff
  CapEff: 0000003fffffffff
  CapBnd: 0000003fffffffff
  Seccomp:    0
  Cpus_allowed:   f
  Cpus_allowed_list:  0-3
  Mems_allowed:   00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001
  Mems_allowed_list:  0
  voluntary_ctxt_switches:    531158
  nonvoluntary_ctxt_switches: 13254
  </code></pre>