Last Modified: Aug 19, 2026
Affected Product(s):
BIG-IP vCMP
Known Affected Versions:
11.6.0, 11.6.0 hf1, 11.6.0 hf2, 11.6.0 hf3, 11.6.0 hf4, 11.6.0 hf5, 11.6.0 hf6, 11.6.0 hf7, 11.6.0 hf8, 11.6.1, 11.6.1 hf1, 11.6.1 hf2, 11.6.2, 11.6.2 hf1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3
Opened: Apr 21, 2015 Severity: 3-Major Related Article:
K55273152
Extremely large and increasing number of files present, of the form /var/run/tmstats-rsync.*. This is a memory-backed directory, and these files are never automatically moved or deleted, hence the vCMP guest may eventually experience swap and out of memory conditions.
In swap and low memory conditions, the vCMP guest suffers performance problems and instability.
vCMP guests upload statistics to the VCMP host periodically. In a small percentage of vCMP guests which have large configurations, these statistics take up an unusually high amount of space. This is not an error, but it exceeds the 6 MB limit that the host accepts. The host's refusal to accept the file triggers behavior in the guest that logs the condition to /var/run/tmstats-rsync.*. If the file size never decreases, this happens repeatedly and indefinitely.
To work around this issue, you can disable guest health statistic collection on the vCMP host. To do so, perform one of the following procedures: Disabling statistic collection for the tmsh show vcmp health command. Impact of workaround: This procedure affects values returned by the tmsh show vcmp health stats command. 1. Log in to the command line of the vCMP host. If the device is a VIPRION, ensure you are logged in to the primary blade. 2. To disable statistic collection, type the following command: tmsh modify vcmp guest all capabilities add { stats-isolated-mode }.
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