Operational Defect Database
BugZero found this defect 2215 days ago.
Data sources
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F5 | 499348
System statistics may fail to update, or report negative deltas due to delayed stats merging.
Last update date:
4/26/2024
Affected products:
BIG-IP
BIG-IP All
Affected releases:
11.5.0
11.5.1
11.5.2
11.5.3
11.5.4
11.5.5
11.5.6
11.5.7
11.5.8
11.5.9
11.5.10
11.6.0
Fixed releases:
No fixed releases provided.
Description:
Bug ID 499348: System statistics may fail to update, or report negative deltas due to delayed stats merging. ... Under some conditions, the BIG-IP system might fail to report statistics over time. ... This can manifest as statistics reporting unchanging statistics (e.g., all zeroes (0)), or as sudden spikes in traffic, or as negative deltas in some counters. ... The system performance graphs will also appear to have gaps / be missing data at the times that this occurs. ... Impact ... Statistics fail to merge, which results in incorrect view of system behavior and operation. ... Conditions ... This occurs when there are frequent changes occurring to the underlying statistics data structures. ... This might occur under the following conditions: -- The system is spawning/reaping processes on a frequent basis (e.g., when there is a large number of external monitors). -- iRules are frequently using 'SSL::profile' to select different SSL profiles on a virtual server (this can cause per-vi...
