Diferencia entre revisiones de «Sol 6»
De Wiki de Sistemas Operativos
| Línea 1: | Línea 1: | ||
| + | Solución: | ||
| + | nº fallos de página 6 | ||
| + | Tasa de fallos de página = --------------------- = ---- = 0,4615 | ||
| + | nº accesos a páginas 13 | ||
| + | |||
La lista de paginas a la que se acceden son las siguientes : | La lista de paginas a la que se acceden son las siguientes : | ||
''' 2(R)--2(W)--3(R)--1(R)--1(W)--3(R)--4(W)--5(R)--1(R)--1(W)--2(R)--3(W)--4(R)''' | ''' 2(R)--2(W)--3(R)--1(R)--1(W)--3(R)--4(W)--5(R)--1(R)--1(W)--2(R)--3(W)--4(R)''' | ||
| − | Puesta a cero cada 4 acceso. | + | Puesta a cero (R) cada 4 acceso. |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | -- | + | Acceso Fallo |
| − | 6 | + | a Marco Marco Marco Marco de |
| − | + | página 1 2 3 4 página Tiempo | |
| − | + | +-----+-----+-----+-----+--------+ | |
| + | | 2 | | | | | | ||
| + | 2(R) | R=1 | | | | x | 1 | ||
| + | | M=0 | | | | | | ||
| + | +-----+-----+-----+-----+--------+ | ||
| + | | = | | | | | | ||
| + | 2(W) | R=1 | | | | | 2 | ||
| + | | M=1 | | | | | | ||
| + | +-----+-----+-----+-----+--------+ | ||
| + | | = | 3 | | | | | ||
| + | 3(R) | R=1 | R=1 | | | x | 3 | ||
| + | | M=1 | M=0 | | | | | ||
| + | +-----+-----+-----+-----+--------+ +-------------+ | ||
| + | | = | = | 1 | | | | El bit R se | | ||
| + | 1(R) | R=1 | R=1 | R=1 | | x | 4 <--| pone a 0 | | ||
| + | | M=1 | M=0 | M=0 | | | +-------------+ | ||
| + | +-----+-----+-----+-----+--------+ | ||
| + | | = | = | = | | | | ||
| + | 1(W) | R=0 | R=0 | R=1 | | | 5 | ||
| + | | M=1 | M=0 | M=1 | | | | ||
| + | +-----+-----+-----+-----+--------+ | ||
| + | | = | = | = | | | | ||
| + | 3(R) | R=0 | R=1 | R=1 | | | 6 | ||
| + | | M=1 | M=0 | M=1 | | | | ||
| + | +-----+-----+-----+-----+--------+ | ||
| + | | = | = | = | 4 | | | ||
| + | 4(W) | R=0 | R=1 | R=1 | R=1 | x | 7 | ||
| + | | M=1 | M=0 | M=1 | M=1 | | | ||
| + | +-----+-----+-----+-----+--------+ +-------------+ | ||
| + | | 5 | = | = | = | | | El bit R se | | ||
| + | 5(R) | R=1 | R=1 | R=1 | R=1 | x | 8 <--| pone a 0 | | ||
| + | | M=0 | M=0 | M=1 | M=1 | | +-------------+ | ||
| + | +-----+-----+-----+-----+--------+ | ||
| + | | = | = | = | = | | | ||
| + | 1(R) | R=0 | R=0 | R=1 | R=0 | | 9 | ||
| + | | M=0 | M=0 | M=1 | M=1 | | | ||
| + | +-----+-----+-----+-----+--------+ | ||
| + | | = | = | = | = | | | ||
| + | 1(W) | R=0 | R=0 | R=1 | R=0 | | 10 | ||
| + | | M=0 | M=0 | M=1 | M=1 | | | ||
| + | +-----+-----+-----+-----+--------+ | ||
| + | | 2 | = | = | = | | | ||
| + | 3(W) | R=1 | R=0 | R=1 | R=0 | x | 11 | ||
| + | | M=0 | M=0 | M=1 | M=1 | | | ||
| + | +-----+-----+-----+-----+--------+ +-------------+ | ||
| + | | = | = | = | = | | | El bit R se | | ||
| + | 3(W) | R=1 | R=1 | R=1 | R=0 | | 12 <--| pone a 0 | | ||
| + | | M=0 | M=1 | M=1 | M=1 | | +-------------+ | ||
| + | +-----+-----+-----+-----+--------+ | ||
| + | | = | = | = | = | | | ||
| + | 4(R) | R=0 | R=0 | R=0 | R=1 | | 13 | ||
| + | | M=0 | M=1 | M=1 | M=1 | | | ||
| + | +-----+-----+-----+-----+--------+ | ||
[[Criterios_de_reemplazo|Volver]] | [[Criterios_de_reemplazo|Volver]] | ||
Revisión del 15:33 30 dic 2015
Solución:
nº fallos de página 6
Tasa de fallos de página = --------------------- = ---- = 0,4615
nº accesos a páginas 13
La lista de paginas a la que se acceden son las siguientes : 2(R)--2(W)--3(R)--1(R)--1(W)--3(R)--4(W)--5(R)--1(R)--1(W)--2(R)--3(W)--4(R)
Puesta a cero (R) cada 4 acceso.
Acceso Fallo
a Marco Marco Marco Marco de
página 1 2 3 4 página Tiempo
+-----+-----+-----+-----+--------+
| 2 | | | | |
2(R) | R=1 | | | | x | 1
| M=0 | | | | |
+-----+-----+-----+-----+--------+
| = | | | | |
2(W) | R=1 | | | | | 2
| M=1 | | | | |
+-----+-----+-----+-----+--------+
| = | 3 | | | |
3(R) | R=1 | R=1 | | | x | 3
| M=1 | M=0 | | | |
+-----+-----+-----+-----+--------+ +-------------+
| = | = | 1 | | | | El bit R se |
1(R) | R=1 | R=1 | R=1 | | x | 4 <--| pone a 0 |
| M=1 | M=0 | M=0 | | | +-------------+
+-----+-----+-----+-----+--------+
| = | = | = | | |
1(W) | R=0 | R=0 | R=1 | | | 5
| M=1 | M=0 | M=1 | | |
+-----+-----+-----+-----+--------+
| = | = | = | | |
3(R) | R=0 | R=1 | R=1 | | | 6
| M=1 | M=0 | M=1 | | |
+-----+-----+-----+-----+--------+
| = | = | = | 4 | |
4(W) | R=0 | R=1 | R=1 | R=1 | x | 7
| M=1 | M=0 | M=1 | M=1 | |
+-----+-----+-----+-----+--------+ +-------------+
| 5 | = | = | = | | | El bit R se |
5(R) | R=1 | R=1 | R=1 | R=1 | x | 8 <--| pone a 0 |
| M=0 | M=0 | M=1 | M=1 | | +-------------+
+-----+-----+-----+-----+--------+
| = | = | = | = | |
1(R) | R=0 | R=0 | R=1 | R=0 | | 9
| M=0 | M=0 | M=1 | M=1 | |
+-----+-----+-----+-----+--------+
| = | = | = | = | |
1(W) | R=0 | R=0 | R=1 | R=0 | | 10
| M=0 | M=0 | M=1 | M=1 | |
+-----+-----+-----+-----+--------+
| 2 | = | = | = | |
3(W) | R=1 | R=0 | R=1 | R=0 | x | 11
| M=0 | M=0 | M=1 | M=1 | |
+-----+-----+-----+-----+--------+ +-------------+
| = | = | = | = | | | El bit R se |
3(W) | R=1 | R=1 | R=1 | R=0 | | 12 <--| pone a 0 |
| M=0 | M=1 | M=1 | M=1 | | +-------------+
+-----+-----+-----+-----+--------+
| = | = | = | = | |
4(R) | R=0 | R=0 | R=0 | R=1 | | 13
| M=0 | M=1 | M=1 | M=1 | |
+-----+-----+-----+-----+--------+