for line in garbage_collection_report:
gcwriter.writerow(line)
-
def computeGarbageCollectionHistogram():
+ # TODO(misha): Modify this to allow users to specify the number of
+ # histogram buckets through a flag.
histogram = []
last_percentage = -1
for _,mtime,_,_,disk_free in garbage_collection_report:
curr_percentage = percentageFloor(disk_free)
if curr_percentage > last_percentage:
- histogram.append( (curr_percentage, mtime) )
+ histogram.append( (mtime, curr_percentage) )
last_percentage = curr_percentage
log.info('Garbage collection histogram is: %s', histogram)
garbage_collection_histogram = []
""" Shows the tradeoff of keep block age vs keep disk free space.
-Each entry is of the form (Disk Proportion, mtime).
+Each entry is of the form (mtime, Disk Proportion).
-An entry of the form (0.52, 1388747781) means that if we deleted the
+An entry of the form (1388747781, 0.52) means that if we deleted the
oldest non-presisted blocks until we had 52% of the disk free, then
all blocks with an mtime greater than 1388747781 would be preserved.
"""