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tech:linux:nice [2015/12/05 06:27] |
tech:linux:nice [2015/12/05 06:27] (current) |
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| + | ====== CPU Priority ====== | ||
| + | Nice is used to set CPU priority. | ||
| + | |||
| + | Niceness runs from | ||
| + | * -20, the highest priority, lowest niceness, to | ||
| + | * 19, the lowest priority, highest niceness and | ||
| + | * Zero is the default | ||
| + | |||
| + | Yes, this is a bit counter-intuitive. | ||
| + | |||
| + | To reduce to **lowest** priority for user ''batadmin'' | ||
| + | <code bash> | ||
| + | renice -n 19 -u batadmin | ||
| + | </code> | ||
| + | Response | ||
| + | <code> | ||
| + | 45100: old priority 0, new priority 10 | ||
| + | </code> | ||
| + | **Note**: New processes will get the default priority. | ||
| + | |||
| + | To increase priority mid-way to user ''wasadmin'' | ||
| + | <code bash> | ||
| + | renice -n -10 -u wasadmin | ||
| + | </code> | ||
| + | |||
