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• 16TB Volumes and SNMP On Windows

  - by John K

  As volumes larger than 16TB became more common, it was recognized that the 32 bit value used to report disk size and usage within the standard "HOST-RESOURCES" MIB in SNMP was not large enough to report the proper disk size. Net-SNMP seems to have addressed this issue by simply manipulating the value of "AllocationUnits" to maintain a 32 bit value…

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• CentOS 7: PHP high CPU usage

  - by HTF

  I've migrated Observium monitoring platform from CentOS 6.5 to CentOS 7 and I've noticed high CPU usage mostly caused by PHP, the CPU load increase when pooling script is running (poller-wrapper.py). Both VMs are running on the same physical host (KVM hypervisor) with exactly the same spec. I also tested this with a simple PHP benchmark script and…

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• Determining the health of a Cisco switch port?

  - by ewwhite

  I've been chasing a packet-loss and network stability issue for a handful of end-users on an internal network for the past few days... These issues surfaced recently, however, the location was struck by lightning six weeks ago. I was seeing 5-10% packet loss between a stack of four Cisco 2960's and several PC's and phones on the other side of a…

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• Is my Cisco switch port bad?

  - by ewwhite

  I've been chasing a packet-loss and network stability issue for a handful of end-users on an internal network for the past few days... These issues surfaced last week, however the location was struck by lightning six weeks ago. I was seeing 5-10% packet loss between a stack of four Cisco 2960's and several PC's and phones on the other side of a…

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