Différences
Ci-dessous, les différences entre deux révisions de la page.
| Les deux révisions précédentes Révision précédente | |||
| informatique:nix:linux:tuning [2018/02/09 16:43] – [Sémaphores] ben | informatique:nix:linux:tuning [2018/02/09 16:44] (Version actuelle) – [Calcul des valeurs] ben | ||
|---|---|---|---|
| Ligne 353: | Ligne 353: | ||
| ==== Calcul des valeurs ==== | ==== Calcul des valeurs ==== | ||
| + | Source ((https:// | ||
| * Calculate the minimum total semaphore requirements using the following formula: | * Calculate the minimum total semaphore requirements using the following formula: | ||
| Ligne 363: | Ligne 364: | ||
| Set semmsl (semaphores per set) to 256.\\ | Set semmsl (semaphores per set) to 256.\\ | ||
| Set semmni (total semaphores sets) to semmns / semmsl rounded up to the nearest multiple of 1024.\\ | Set semmni (total semaphores sets) to semmns / semmsl rounded up to the nearest multiple of 1024.\\ | ||
| + | \\ | ||
| The following formula can be used as a guide, although in practice, SEMMNS and SEMMNU can be much less than SEMMNI * SEMMSL because not every program in the system needs semaphores. | The following formula can be used as a guide, although in practice, SEMMNS and SEMMNU can be much less than SEMMNI * SEMMSL because not every program in the system needs semaphores. | ||
| SEMMNS = SEMMNU = (SEMMNI * SEMMSL) | SEMMNS = SEMMNU = (SEMMNI * SEMMSL) | ||