Benjamin Welton
f15bf42e72
[SWDEV-418917] reported that timing skew was being introduced by
roctracer. Most of the cause of this problem seems to stem from outrunning
the double buffering scheme that we use in memory_pool (part of the
reason for this outrun is due to File writing being slow). A semi-quick
fix that may be able to last until RocProf v2 is complete is to allow
adjustment of the buffer size. ROCTRACER_BUFFER_SIZE env variable was
introduced here which allows setting the buffer size of tracer tool.
By increasing the buffer size, an ~8% reduction in execution time when timing
on the program side. This should also reduce the frequency of large delays
when we outrun the buffer. Note: increasing this size dramatically can cause
slow startups (i.e. above 50MB).
Change-Id: I98c4316cfe93a043623ae2669cfe1a5abb55c990
[ROCm/roctracer commit: 38ba63030d]