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OS Info (o) [aka osinfo]

For information purposes, ProTop gathers interesting information about the operating system to display in ProTop RT and the ProTop web portal.

Here's what the panel looks like in ProTop RT:

First Column

ProTop RT Label Alertable Metric* Description
OS Name osName Operating system Name
OS Version osVersion Operating system version
Kernel Version keVersion Operating system kernel version
Host Name hostName Name of server / host ProTop is running on
Max File Size maxFileSz Operating system limit on any one file size
Max Stack maxStack Maximum stack size
Max Data Seg maxDataSeg Maximum data segment size
Max Proc Mem maxProcMem Maximum memory per process
Max Open Files maxOpenFl Operating system limit on the number of files opened concurrently
Max Processes maxProcMem Operating system limit on the number of processes running concurrently
Num Shm Segs SHMMNI Number of shared memory segments
Max Shm Seg Sz SHMMAX Maximum shared memory segment size
Max Amnt Shm SHMALL Maximum amount of shared memory

Second Column

ProTop RT Label Alertable Metric* Description
OS Page Size N/A Operating system page size
Swappiness N/A Current value of the VM Swappiness setting
Tot Semaphores SEMMNS Total number of semaphores system-wide
Tot Sem Idents SEMMNI Total number of semaphore identifiers
Semaphores/Set SEMMSL Maximum number of semaphores per set
Sem Ops/Call SEMOPM Maximum operations per semop call

Third Column

ProTop RT Label Alertable Metric* Description
Up Time osUpTime Days since the server was rebootedDays the server has been up
Mem Total memTotal Total amount of memory installed on the server
Available memAvailable Amount of available memory on the server
Inactive memInAct Amount of inactive memory
Free memFree Amount of memory currently not in use
Committed_AS memCommtdAS An estimate of how much RAM you need to make a 99.99% guarantee that there never is OOM (out of memory) for this workload.
Buffers memBufs Memory buffers in use
Shared memShared Amount of shared memory
Cached memCached Amount of cached memory
Active memActive Current amount of active memory

Fourth Column

ProTop RT Label Alertable Metric* Description
CPU Model modelCPU Model name of the CPUs used on this server
Architecture cpuArch CPU architecture
Byte Order byteOrder Order or sequence of bytes of a word of digital data
Hypervisor hypervisor Virtual machine monitor solution
Power Mgmt N/A Power management
Real Cores cpuCores Number of physical cores on the server
Logical CPUs logCPUs Number of logical CPUs
Clock Speed Ghz cpu_clock CPU clock speed in Ghz
CPU BogoMIPS cpu_bogomips Measure of CPU speed
Sockets numSockets Number of sockets
Cores/socket coresPerSocket Cores per socket
Threads/core threadsPerCore Threads per core
NUMA nodes numaNodes Number of NUMA nodes on this server

*Requires data collector "OSInfo" in pt3agent.cfg. With the commercial version of ProTop, you can configure alerts using the metric names in this column. For a full list of metrics, see the Alertable Metrics section.