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The values in the flat files in the /proc/hpc/admin directory presenting the current configuration of the cluster. Also the administrator can write its own values into these files to change the configuration during runtime, e.g.
Table 1. Changing /proc/hpc parameters
| echo 1 > /proc/hpc/admin/block | blocks the arrival of remote processes |
| echo 1 > /proc/hpc/admin/bring | bring all migrated processes home |
...
Table 2. /proc/hpc/admin/
| (binary files) | config | the main configuration file (written by the setpe util) |
| (flat files) | block | allow/forbid arrival of remote processes |
| bring | bring home all migrated processes | |
| dfsalinks | list of current symbolic dfsa-links | |
| expel | sending guest processes home | |
| gateways | maximum number of gateways | |
| lstay | local processes should stay | |
| mospe | contains the openMosix node id | |
| nomfs | disables/enables MFS | |
| overheads | for tuning | |
| quiet | stop collecting load-load-balancing informations | |
| decay-interval | interval for collecting informations about load-balancing | |
| slow-decay | default 975 | |
| fast-decay | default 926 | |
| speed | speed relative to PIII/1GHz) | |
| stay | enables/disables automatic process migration |
Table 3. Writing a 1 to the following files /proc/hpc/decay/
| clear | clears the decay statistics |
| cpujob | tells openMosix that the process is cpu-bound |
| iojob | tells openMosix that the process is io-bound |
| slow | tells openMosix to decay its statistics slow |
| fast | tells openMosix to decay its statistics fast |
Table 4. Informations about the other nodes
| /proc/hpc/nodes/[openMosix_ID]/CPUs | how many CPU's the node has |
| /proc/hpc/nodes/[openMosix_ID]/load | the openMosix load of this node |
| /proc/hpc/nodes/[openMosix_ID]/mem | available memory as openMosix believes |
| /proc/hpc/nodes/[openMosix_ID]/rmem | available memory as Linux believes |
| /proc/hpc/nodes/[openMosix_ID]/speed | speed of the node relative to PIII/1GHz |
| /proc/hpc/nodes/[openMosix_ID]/status | status of the node |
| /proc/hpc/nodes/[openMosix_ID]/tmem | available memory |
| /proc/hpc/nodes/[openMosix_ID]/util | utilization of the node |
Table 5. Additional Informations about local processes
| /proc/[PID]/cantmove | reason why a process cannot be migrated |
| /proc/[PID]/goto | to which node the process should migrate |
| /proc/[PID]/lock | if a process is locked to its home node |
| /proc/[PID]/nmigs | how many times the process migrated |
| /proc/[PID]/where | where the process is currently being computed |
| /proc/[PID]/migrate | same as goto remote processes |
| /proc/hpc/remote/from | the home node of the process |
| /proc/hpc/remote/identity | additional informations about the process |
| /proc/hpc/remote/statm | memory statistic of the process |
| /proc/hpc/remote/stats | cpu statistics of the process |
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