Previously made two trips (get and set) for each group of items from
an index key being removed. Now, we fetch indexes once at the beginning
and store the updated indexes once at the end.
There was a difference compared to the previous v0.10 implementation
regarding the get/set behaviour. On v0.11, we used to get only the items
separately for each index and update only that index. Even though it
might have been more efficient, trips to the db are still too expensive
so it didn't matter much in the end.
Previously, the timestamp was accurate only down to seconds. For smaller intervals,
this would truncate the previous file(s). Now, for small intervals, the number of
microseconds is appended to the file name.
Added the possibility to disable timestamps in the memory profile file names and use
increments of 1 instead.
Updated the memory profiling integration tests.
Would previously happen if memory profiling was already started.
Now using os.File.Stat beforehand to check if a handler of the file
is already active and confirm the status of profiling. This required
changing the type of the reference fileCPU from io.Closer to *os.File.
Asserting the type would have worked as well.
- merge StopChanMemProf with StopMemoryProfiling
- remove fileMEM and stopMemProf from struct and constructors
- add separate mutex for memory profiling, ensure thread safety
- handle all significant errors
- log error if StopMemoryProfiling fails during CoreS Shutdown
- ignore errors if profiling inactive in Shutdown and deferred Stop
- move validations inside V1 functions
- return error if StartMemoryProfiling already started
- return error if StopMemoryProfiling already stopped or never started
- close profiling loop on error, not the cgr-engine
- StopMemoryProfiling closes channel and profiling loop writes final profile
- rename Path to DirPath for mandatory field error
- rename memprof_nrfiles flag to memprof_maxfiles
- increase default memprof_interval
- consider MaxFiles <= 0 as unlimited
- move memory profiling logic after starting services
- use CoreService Start/StopMemoryProfiling in main
- remove final memory profile block (created by deferred Stop)
- convert MemProfiling to method on CoreService and rename to profileMemory
- use Ticker for recurrent actions instead of Timer
- compute mem_final.prof full path in StartMemoryProfiling
- suffix profile files with current time instead of numbers
- update dispatcher methods after changes
- move MemoryPrf from utils to cores, rename to MemoryProfilingParams
- add logs for starting/stopping profiling
cgr-engine.go:
- use filepath.Join instead of path.Join
- handle *CoreService.StopCPUProfiling error inside deferred function
- same with the error from *os.File.Close()
cores/core.go:
- StartCPUProfile now returns an io.Closer (as opposed to an io.WriteCloser)
- handle pprof.StartCPUProfile error and ensure file is closed before returning
- log file close error as a warning if it occurs
- return missing mandatory error with correct path field name ('DirPath')
- no need to check if fileCPU is nil for profiling status
- pprof.StartCPUProfiling will return an error if profiling is already started
- os.File.Close() will return ErrClosed if profiling is already stopped
- differentiate between calling StopCPUProfiling when profiling hasn't started
and when it was already stopped by returning appropriate errors
- improved comments and error messages
