Diferencia entre revisiones de «Solución ejercicio 1 memoria virtual»
De Wiki de Sistemas Operativos
(resuleto LRU) |
(LFU resuelto) |
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Línea 66: | Línea 66: | ||
| 1 | 1 | = | = | = | = | = | 5 | = | = | = | = | 4 | | | 1 | 1 | = | = | = | = | = | 5 | = | = | = | = | 4 | | ||
| |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | ||
− | | R | + | | R | 1 | = | = | = | = | = | 1 | = | = | = | = | 1 | |
--------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------- | ||
marcos | 2 | | | | 2 | = | = | 2 | = | 1 | = | = | 1 | | marcos | 2 | | | | 2 | = | = | 2 | = | 1 | = | = | 1 | | ||
| |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | ||
− | | R | + | | R | | | | 1 | = | = | 0 | = | 1 | = | = | 1 | |
--------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------- | ||
| 3 | | | | | 3 | = | 3 | 3 | = | = | 3 | 3 | | | 3 | | | | | 3 | = | 3 | 3 | = | = | 3 | 3 | | ||
| |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | ||
− | | R | + | | R | | | | | 1 | = | 0 | 1 | = | = | 1 | 1 | |
--------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------- | ||
| 4 | | | | | | 4 | 4 | = | = | 2 | = | 2 | | | 4 | | | | | | 4 | 4 | = | = | 2 | = | 2 | | ||
| |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | ||
− | | R | + | | R | | | | | | 1 | 0 | = | = | 1 | = | 1 | |
--------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------- | ||
fallo | X | | | X | X | X | X | | X | X | | X | | fallo | X | | | X | X | X | X | | X | X | | X | | ||
Línea 118: | Línea 118: | ||
= LFU = | = LFU = | ||
− | + | accesos a páginas | |
+ | |||
+ | | r | r | w | r | r | r | r | w | w | w | r | r | | ||
+ | ------------------------------------------------------------------------------------------------- | ||
+ | | 1 | 1 | 1 | 2 | 3 | 4 | 5 | 3 | 1 | 2 | 3 | 4 | | ||
+ | --------------------------------------------------------------------------------------------------------- | ||
+ | | 1 | 1 | 1 | 1 | = | = | = | = | = | 1 | = | = | 1 | | ||
+ | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | ||
+ | | C | 1 | 2 | 3 | = | = | = | = | = | 4 | = | = | 4 | | ||
+ | --------------------------------------------------------------------------------------------------------- | ||
+ | marcos | 2 | | | | 2 | = | = | 5 | = | = | = | = | 4 | | ||
+ | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | ||
+ | | C | | | | 1 | = | = | 1 | = | = | = | = | 1 | | ||
+ | --------------------------------------------------------------------------------------------------------- | ||
+ | | 3 | | | | | 3 | = | = | 3 | = | = | 3 | 3 | | ||
+ | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | ||
+ | | C | | | | | 1 | = | = | 2 | = | = | 3 | 3 | | ||
+ | --------------------------------------------------------------------------------------------------------- | ||
+ | | 4 | | | | | | 4 | = | = | = | 2 | = | 2 | | ||
+ | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | ||
+ | | C | | | | | | 1 | = | = | = | 1 | = | 1 | | ||
+ | --------------------------------------------------------------------------------------------------------- | ||
+ | fallo | X | | | X | X | X | X | | | X | | X | | ||
+ | página ------------------------------------------------------------------------------------------------- | ||
+ | |||
+ | tiempo -> | ||
+ | |||
+ | 7 | ||
+ | talla de fallos de página = ------ | ||
+ | 12 | ||
+ | |||
+ | Duda!! Al quitar un elemento, se resetea su contador? yo he tomado que no..alguien sabe si debe permanecer su valor anterior? | ||
= Sustitución por envejecimiento = | = Sustitución por envejecimiento = | ||
Pendiente solución. | Pendiente solución. |
Revisión del 09:24 7 jun 2011
FIFO
accesos a páginas ------------------------------------------------------------------------- | 1 | 1 | 1 | 2 | 3 | 4 | 5 | 3 | 1 | 2 | 3 | 4 | --------------------------------------------------------------------------------- | 1 | 1 | = | = | = | = | = | 5 | = | = | = | = | 4 | --------------------------------------------------------------------------------- marcos | 2 | | | | 2 | = | = | = | = | 1 | = | = | = | -------------------------------------------------------------------------------- | 3 | | | | | 3 | = | = | = | = | 2 | = | = | --------------------------------------------------------------------------------- | 4 | | | | | | 4 | = | = | = | = | 3 | = | --------------------------------------------------------------------------------- fallo | X | | | X | X | X | X | | X | X | X | X | página ------------------------------------------------------------------------- tiempo -> 9 talla de fallos de página = ------ = 0.75 12
NRU
En caso de empate, se emplea LRU.
accesos a páginas | r | r | w | r | r | r | r | w | w | w | r | r | ------------------------------------------------------------------------------------------------- | 1 | 1 | 1 | 2 | 3 | 4 | 5 | 3 | 1 | 2 | 3 | 4 | --------------------------------------------------------------------------------------------------------- | 1 | 1 | = | = | = | = | = | = | = | = | = | = | = | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | R | M | 1 | 0 | = | = | 1 | 1 | = | = | = | = | = | = | = | = | = | = | = | = | = | = | = | = | = | = | --------------------------------------------------------------------------------------------------------- marcos | 2 | | | | 2 | = | = | 5 | = | = | = | = | 4 | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | R | M | | | | | | | 1 | 0 | = | = | = | = | 1 | 0 | = | = | = | = | = | = | = | = | 1 | 0 | --------------------------------------------------------------------------------------------------------- | 3 | | | | | 3 | = | = | 3 | = | = | = | = | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | R | M | | | | | | | | | 1 | 0 | = | = | = | = | 1 | 1 | = | = | = | = | = | = | = | = | --------------------------------------------------------------------------------------------------------- | 4 | | | | | | 4 | = | = | = | 2 | = | = | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | R | M | | | | | | | | | | | 1 | 0 | = | = | = | = | = | = | 1 | 1 | = | = | = | = | --------------------------------------------------------------------------------------------------------- fallo | X | | | X | X | X | X | | | X | | X | página ------------------------------------------------------------------------------------------------- tiempo -> 7 talla de fallos de página = ------ = 0.583 12
NRU con 2º oportunidad
accesos a páginas | r | r | w | r | r | r | r | w | w | w | r | r | ------------------------------------------------------------------------------------------------- | 1 | 1 | 1 | 2 | 3 | 4 | 5 | 3 | 1 | 2 | 3 | 4 | --------------------------------------------------------------------------------------------------------- | 1 | 1 | = | = | = | = | = | 5 | = | = | = | = | 4 | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | R | 1 | = | = | = | = | = | 1 | = | = | = | = | 1 | --------------------------------------------------------------------------------------------------------- marcos | 2 | | | | 2 | = | = | 2 | = | 1 | = | = | 1 | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | R | | | | 1 | = | = | 0 | = | 1 | = | = | 1 | --------------------------------------------------------------------------------------------------------- | 3 | | | | | 3 | = | 3 | 3 | = | = | 3 | 3 | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | R | | | | | 1 | = | 0 | 1 | = | = | 1 | 1 | --------------------------------------------------------------------------------------------------------- | 4 | | | | | | 4 | 4 | = | = | 2 | = | 2 | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | R | | | | | | 1 | 0 | = | = | 1 | = | 1 | --------------------------------------------------------------------------------------------------------- fallo | X | | | X | X | X | X | | X | X | | X | página ------------------------------------------------------------------------------------------------- tiempo -> 8 talla de fallos de página = ------ 12
Creo que es asi, pero no me lo tomeis a pies juntillas que no estoy muy seguro.
LRU
accesos a páginas ------------------------------------------------------------------------- | 1 | 1 | 1 | 2 | 3 | 4 | 5 | 3 | 1 | 2 | 3 | 4 | --------------------------------------------------------------------------------- | 1 | 1 | = | = | = | = | = | 5 | = | = | = | = | 4 | --------------------------------------------------------------------------------- marcos | 2 | | | | 2 | = | = | = | = | 1 | = | = | = | -------------------------------------------------------------------------------- | 3 | | | | | 3 | = | = | = | = | = | = | = | --------------------------------------------------------------------------------- | 4 | | | | | | 4 | = | = | = | 2 | = | = | --------------------------------------------------------------------------------- fallo | X | | | X | X | X | X | | X | X | | X | página ------------------------------------------------------------------------- tiempo -> 8 talla de fallos de página = ------ 12
LFU
accesos a páginas | r | r | w | r | r | r | r | w | w | w | r | r | ------------------------------------------------------------------------------------------------- | 1 | 1 | 1 | 2 | 3 | 4 | 5 | 3 | 1 | 2 | 3 | 4 | --------------------------------------------------------------------------------------------------------- | 1 | 1 | 1 | 1 | = | = | = | = | = | 1 | = | = | 1 | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | C | 1 | 2 | 3 | = | = | = | = | = | 4 | = | = | 4 | --------------------------------------------------------------------------------------------------------- marcos | 2 | | | | 2 | = | = | 5 | = | = | = | = | 4 | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | C | | | | 1 | = | = | 1 | = | = | = | = | 1 | --------------------------------------------------------------------------------------------------------- | 3 | | | | | 3 | = | = | 3 | = | = | 3 | 3 | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | C | | | | | 1 | = | = | 2 | = | = | 3 | 3 | --------------------------------------------------------------------------------------------------------- | 4 | | | | | | 4 | = | = | = | 2 | = | 2 | | |-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------| | C | | | | | | 1 | = | = | = | 1 | = | 1 | --------------------------------------------------------------------------------------------------------- fallo | X | | | X | X | X | X | | | X | | X | página ------------------------------------------------------------------------------------------------- tiempo -> 7 talla de fallos de página = ------ 12
Duda!! Al quitar un elemento, se resetea su contador? yo he tomado que no..alguien sabe si debe permanecer su valor anterior?
Sustitución por envejecimiento
Pendiente solución.