Hi guys,
We are having a very weird problem, where the process memory keeps rising,
but both the pprof and valgrind report no memory leaks. But the RSS just
keeps rising.The C part is in external so library
To be more exact, the pprof when the process becomes idle reports a few
megabytes used and the Valgrind reports 88bytes lost(this are global
objects) But the RSS for example is ~1G and virtual 4G+
I've run also run the app with the GODEBUG=madvdontneed=1,gctrace=1 but
madvdontneed doesn't seem to help.
If I describe the MO of communicating with the library's API (all memory is
allocated on the library side).
for {
* initialize the processor
* say to the library to create the blob of size x on it's side
* convert the returned pointer to a fake slice (code below)
* copy data to the fake slice
* instruct processor to do it's thing (e.g make calculations/compress the
data,...)
* process the data on Go side (depending on the processor this either
makes a copy of the data or creates a fake slice from it)
* destroy the processor (this frees the memory on the library's side)
* upload the data somewhere
}
func cVoidPtrToByteSlice(data unsafe.Pointer, size int, bytes *[]byte) {
header := (*reflect.SliceHeader)(unsafe.Pointer(bytes))
header.Data = uintptr(data)
header.Len = size
header.Cap = size
}
BR,
Miha
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