Forgot to add... from the profile, gob is calling decodeStruct, which calls decodeMap, which allocates. So we are looking for structs that contain a map that are decoded and never garbage collected (maybe the WatheverDevices contain a map and some other goroutine reads the Devices form "input" channel and retains them?).
On Thursday, October 13, 2016 at 10:15:36 PM UTC+2, Roberto Zanotto wrote: > > I took a quick look at the code. There's the Receive loop, you allocate > and decode ReceivedGobs there. As part of the ReceivedGob, a WatheverDevice > is also allocated and decoded. Assuming there are no errors in decoding, > you do SendResult(Device), which sends the Device to the "input" channel. I > seem to understand that you expect the ReceivedGobs to be garbage collected > and it seems to me that it should indeed happen. Maybe are the Devices that > are filling your memory? Where do the Devices go, after they are sent to > "input"? > > On Thursday, October 13, 2016 at 7:22:49 PM UTC+2, Morgan Hein wrote: >> >> Howdy, >> >> I'm struggling here, and hopefully someone can point me in the right >> direction. >> >> >> Here's a playground with the code <https://play.golang.org/p/OQZBSnxXmI> >> in question. Here's the pprof with memory usage >> <https://dl.dropboxusercontent.com/u/11780/memgraph-huge.pdf?dl=1> >> <https://docs.google.com/viewer?url=https%3A%2F%2Fdl.dropboxusercontent.com%2Fu%2F11780%2Fmemgraph-huge.pdf%3Fdl%3D1&embedded=true&chrome=false&dov=1> >> >> <https://docs.google.com/viewer?url=https%3A%2F%2Fdl.dropboxusercontent.com%2Fu%2F11780%2Fmemgraph-huge.pdf%3Fdl%3D1&embedded=true&chrome=false&dov=1> >> . >> >> >> I cannot understand why the memory usage is going up so much. As far as I >> can tell, not only am I copying the data structure that is received in the >> Gob, but i'm setting the original value of the ReceivedGob to nil. Why, >> then, does the reflect.mapassign and gob.Decoder continue to increase in >> memory? >> >> I am either missing something about scope, pointers, or Gob. Any insights >> or help would be greatly appreciated. >> >> Thanks! >> > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
