anchor.diff:  varnish.client_drop,gauge,,connection,,"Client connection dropped, no session. This metric is only provided by varnish 3.x.",0,varnish,client drop
   varnish.client_drop_late,gauge,,connection,,Client connection dropped late. This metric is only provided by varnish 3.x.,0,varnish,client drop late
   varnish.client_req,gauge,,request,,Parseable client requests seen.,0,varnish,client req
  -varnish.client_req_400,gauge,,request,,Requests that were malformed in some drastic way. This metric is only provided by varnish 4.x.,-1,varnish,client req 400
  -varnish.client_req_411,gauge,,request,,Requests that were missing a Content-Length: header. This metric is only provided by varnish 4.x.,-1,varnish,client req 411
  -varnish.client_req_413,gauge,,request,,Requests that were too big. This metric is only provided by varnish 4.x.,-1,varnish,client req 413
  -varnish.client_req_417,gauge,,request,,Requests with a bad Expect: header. This metric is only provided by varnish 4.x.,-1,varnish,client req 417
  +varnish.client_req_400,gauge,,request,,Requests that were malformed in some drastic way. This metric is only provided by varnish >=4.x.,-1,varnish,client req 400
  +varnish.client_req_411,gauge,,request,,Requests that were missing a Content-Length: header. This metric is only provided by varnish >=4.x.,-1,varnish,client req 411
  +varnish.client_req_413,gauge,,request,,Requests that were too big. This metric is only provided by varnish >=4.x.,-1,varnish,client req 413
  +varnish.client_req_417,gauge,,request,,Requests with a bad Expect: header. This metric is only provided by varnish >=4.x.,-1,varnish,client req 417
   varnish.dir_dns_cache_full,gauge,,event,,DNS director full DNS cache. This metric is only provided by varnish 3.x.,0,varnish,dir dns cache full
   varnish.dir_dns_failed,gauge,,event,,DNS director failed lookup. This metric is only provided by varnish 3.x.,0,varnish,dir dns fail
   varnish.dir_dns_hit,gauge,,event,,DNS director cached lookup hit. This metric is only provided by varnish 3.x.,0,varnish,dir dns hit
   varnish.dir_dns_lookups,gauge,,event,,DNS director lookups. This metric is only provided by varnish 3.x.,0,varnish,dir dns lookups
   varnish.esi_errors,gauge,,event,,Edge Side Includes (ESI) parse errors.,0,varnish,esi errors
   varnish.esi_warnings,gauge,,event,,Edge Side Includes (ESI) parse warnings.,0,varnish,esi warnings
  -varnish.exp_mailed,gauge,,object,,Objects mailed to expiry thread for handling. This metric is only provided by varnish 4.x.,0,varnish,exp mailed
  -varnish.exp_received,gauge,,object,,Objects received by expiry thread for handling. This metric is only provided by varnish 4.x.,0,varnish,exp received
  +varnish.exp_mailed,gauge,,object,,Objects mailed to expiry thread for handling. This metric is only provided by varnish >=4.x.,0,varnish,exp mailed
  +varnish.exp_received,gauge,,object,,Objects received by expiry thread for handling. This metric is only provided by varnish >=4.x.,0,varnish,exp received
   varnish.fetch_1xx,gauge,,response,,Back end response with no body because of 1XX response (Informational).,0,varnish,fetch 1xx
   varnish.fetch_204,gauge,,response,,Back end response with no body because of 204 response (No Content).,0,varnish,fetch 204
   varnish.fetch_304,gauge,,response,,Back end response with no body because of 304 response (Not Modified).,0,varnish,fetch 304
  
positive.code: varnish.LCK.ban.creat,gauge,,lock,,Created locks.,0,varnish,ban create
  varnish.LCK.ban.destroy,gauge,,lock,,Destroyed locks.,0,varnish,ban destroy
  varnish.LCK.ban.locks,gauge,,lock,,Lock operations.,0,varnish,ban locks
  varnish.LCK.busyobj.creat,gauge,,lock,,Created locks. This metric is only provided by varnish 4.x.,0,varnish,busyobj create
  varnish.LCK.busyobj.destroy,gauge,,lock,,Destroyed locks. This metric is only provided by varnish 4.x.,0,varnish,busyobj destroy
  varnish.LCK.busyobj.locks,gauge,,lock,,Lock operations. This metric is only provided by varnish 4.x.,0,varnish,busyobj locks
  varnish.LCK.cli.colls,gauge,,lock,,Collisions. This metric is only provided by varnish 3.x.,0,varnish,cli colls
  varnish.LCK.cli.creat,gauge,,lock,,Created locks.,0,varnish,cli create
  varnish.LCK.cli.destroy,gauge,,lock,,Destroyed locks.,0,varnish,cli destroy
  
negative.code: varnish.LCK.lru.creat,gauge,,lock,,Created locks.,0,varnish,lru create
  varnish.LCK.lru.destroy,gauge,,lock,,Destroyed locks.,0,varnish,lru destroy
  varnish.LCK.lru.locks,gauge,,lock,,Lock operations.,0,varnish,lru locks
  varnish.LCK.mempool.creat,gauge,,lock,,Created locks. This metric is only provided by varnish >=4.x.,0,varnish,mempool create
  varnish.LCK.mempool.destroy,gauge,,lock,,Destroyed locks. This metric is only provided by varnish >=4.x.,0,varnish,mempool destroy
  varnish.LCK.mempool.locks,gauge,,lock,,Lock operations. This metric is only provided by varnish >=4.x.,0,varnish,mempool locks
  varnish.LCK.nbusyobj.creat,gauge,,lock,,Created locks. This metric is only provided by varnish >=4.x.,0,varnish,nbusyobj create
  varnish.LCK.nbusyobj.destroy,gauge,,lock,,Destroyed locks. This metric is only provided by varnish >=4.x.,0,varnish,nbusyobj destroy
  varnish.LCK.nbusyobj.locks,gauge,,lock,,Lock operations. This metric is only provided by varnish >=4.x.,0,varnish,nbusyobj locks
  varnish.LCK.objhdr.colls,gauge,,lock,,Collisions. This metric is only provided by varnish 3.x.,0,varnish,objhdr colls
  varnish.LCK.objhdr.creat,gauge,,lock,,Created locks.,0,varnish,objhdr create
  varnish.LCK.objhdr.destroy,gauge,,lock,,Destroyed locks.,0,varnish,objhdr destroy
  varnish.LCK.objhdr.locks,gauge,,lock,,Lock operations.,0,varnish,objhdr locks
  varnish.LCK.pipestat.creat,gauge,,lock,,Created locks. This metric is only provided by varnish >=4.x.,0,varnish,pipestat create
  varnish.LCK.pipestat.destroy,gauge,,lock,,Destroyed locks. This metric is only provided by varnish >=4.x.,0,varnish,pipestat destroy
  varnish.LCK.pipestat.locks,gauge,,lock,,Lock operations. This metric is only provided by varnish >=4.x.,0,varnish,pipestat locks
  varnish.LCK.sess.creat,gauge,,lock,,Created locks. This metric is only provided by varnish >=4.x.,0,varnish,sess create
  varnish.LCK.sess.destroy,gauge,,lock,,Destroyed locks. This metric is only provided by varnish >=4.x.,0,varnish,sess destroy
  varnish.LCK.sess.locks,gauge,,lock,,Lock operations. This metric is only provided by varnish >=4.x.,0,varnish,sess locks
  varnish.LCK.sessmem.colls,gauge,,lock,,Collisions. This metric is only provided by varnish 3.x.,0,varnish,sessmem colls
  varnish.LCK.sessmem.creat,gauge,,lock,,Created locks.,0,varnish,sessmem create
  varnish.LCK.sessmem.destroy,gauge,,lock,,Destroyed locks.,0,varnish,sessmem destroy
  