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Extrapolate further into the future 

So far we have only extapolated as far into the future as we could look
into the past. Everything beyond that was "infinity". Now we use the
first and last observation to extrapolate beyond that.
This commit is contained in:
Peter J. Holzer 2024-09-07 12:01:20 +02:00
parent 2016fb4a0e
commit c462ca4d80
1 changed files with 10 additions and 0 deletions
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10
process_queue
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@ -2,6 +2,7 @@
import logging
import logging.config
import math
import os
import socket
import statistics
@ -53,6 +54,15 @@ class DiskFullPredictor:
log.info("d = %s, current_used_bytes = %s, current_usable_bytes = %s", m, current_used_bytes, current_usable_bytes)
tuf = now - lts.data[i][0]
break
else:
# XXX - this is probably a range, so maybe we should use some kind
# of average. It might also be zero, so maybe we have to search for
# the first non-zero value? For now keep it simple.
first_used_bytes = lts.data[0][1]
historic_growth = current_used_bytes / first_used_bytes
future_growth = current_usable_bytes / current_used_bytes
tuf = math.log(future_growth) / math.log(historic_growth) * (now - lts.data[0][0])
tuf = max(tuf, now - lts.data[0][0])
desc = {**lts.description,
"measure": "time_until_disk_full",
"node": node,