7/31/2019 CPU Scheduling Algorithms (Presentation)

1/14

X F C @ Z \ , J Z L C E L I X Z @ H S D X L @ I &D @ B Q M Z L T @ I @ E X F C M N K @ Z L X F B T

Q Z C T C I X C Z T ?

M B M Z O C C X W J C D T / F / E = 1 / 1 = = ; R

S _ M L Z M F B C H W J C D T / F / E = 1 / 1 = = 6 R

X! DQS T"!#$%'(

M%()*+-

7/31/2019 CPU Scheduling Algorithms (Presentation)

2/14

[fmt mrc DQS sdfchunlik mnk`rltfbs0

Hceliltl`i nk`rltfbs tfmt sct tfc sdfchunc e`rtfc DQS!s "r`dcsslik mih rcs`urdc mnn`dmtl`i#

Z`nc X` hcdlhc li $fmt `rhcr sfmnn tfc "r`dcsscs

%c scit t` DQS e`r "r`dcsslik#Xfc Icch e`r Tdfchunlik

` &untl'tms(lik` &untl"nc)lik` Ceeldlcid*` +umnlt* `e scr,ldc

7/31/2019 CPU Scheduling Algorithms (Presentation)

3/14

X*"cs `e DQS Tdfchuncrs

-`ik'tcrb Tdfchunlik` Hcdlhcs $fldf "r`dcss $lnn k` t` rcmh* .ucuc` Ssch li /mtdf'"r`dcsslik s*stcbs1 su"crd`b"utcrs1 ctd=

&chlub'tcrb Tdfchunlik` T$m"s tfc "r`dcsscs %ct$cci &mli : Tcd`ihmr* bcb`r*` 4rccs'u" tfc bmli bcb`r* rcs`urdcs e`r $mltlik "r`dcsscs

Tf`rt'tcrb sdfchunlik`

Hcdlhcs $fldf "r`dcss sfmnn %c mnn`dmtch t` DQS e`nn`$lik ic)tlitcrru"t8s*stcb dmnn

` Qrc'cb"tl,c mih emst sdfchuncr1 $`r(s $ltf flkf erc.ucid*

7/31/2019 CPU Scheduling Algorithms (Presentation)

4/14

Tdfchunlik Hlsdl"nlics

Hceliltl`i nk`rltfbs rcs"`isl%nc e`r hlstrl%utlikrcs`urdcs mb`ik "mrtlcs $fldf rc.ucst tfcb#

Z`nc X` sfmrc tfc DQS tlbc mb`ik hleecrcit

tfrcmhs mih "r`dcsscs#X*"cs? EDET Elrst'D`bc1 Elrst'Tcr,ch# TOE Tf`rtcst O`% Elrst#

EQQT El)ch Qrl`rlt* Qrc'cb"tl,c Tdfchunlik# ZZ Z uih'Z %li sdfchunlik# B.T Buntl'nc,cn .ucuc Tdfchunlik#

7/31/2019 CPU Scheduling Algorithms (Presentation)

5/14

EDET Elrst'D`bc1 Elrst'Tcr,ch#

ns` (i`$i ms ELE@ Elrst'Li, Elrst'@ut#

Tlb"ncst sdfchunlik mnk`rltfb

Xfr`ukf"ut mih s*stcb ceeldlcid* dmi %c n`$ li dmsc

n`ik "r`dcsscs f`k tfc rcs`urdcsXurimr`uih tlbc1 $mltlik tlbc mih rcs"`isc tlbc

dmi %c flkf e`r tfc smbc rcms`is m%`,c

I` "rl`rltl3mtl`i1 i`i'"rccb"tl,c1 %msch `i +ucucs

7/31/2019 CPU Scheduling Algorithms (Presentation)

6/14

EDET Elrst'D`bc1 Elrst'Tcr,ch#

h,mitmkcs? Cms* t` uihcrstmih Cms* t` lb"ncbcit

Hlsmh,mitmkcs? H`csi!t "m* fcch t` "r`dcsslik tlbc `r "rl`rlt* Xurimr`uih tlbc dmi %cd`bc budf flkfcr -`ik "r`dcsscs dmi f`k tfc s*stcb rcs`urdcs

7/31/2019 CPU Scheduling Algorithms (Presentation)

7/14

TOE Tf`rtcst O`% Elrst#

ns` (i`$i ms TZX Tf`rtcst Zcbmlilik Xlbc#

Zc.ulrcs mh,midch (i`$nchkc mih cstlbmtl`i `e tfcrcbmlilik'tlbc `e m 5`%8"r`dcss

Qrc'Cb"tl,c t*"c? Dmi litcrru"t mi mnrcmh*'ruiilik"r`dcss le m "r`dcss $ltf sf`rtcr %urst'tlbc mrrl,cs

I`i'Qrccb"tl,c t*"c? Dmii`t litcrru"t mi mnrcmh*'ruiilik "r`dcss

Hcslkich e`r bm)lbub tfr`ukf"ut

7/31/2019 CPU Scheduling Algorithms (Presentation)

8/14

TOE Tf`rtcst O`% Elrst#

h,mitmkcs? Qr`,lhcs rcnmtl,cn* k``h tfr`ukf"ut I` %lmslik li tfc em,`r `e n`ik "r`dcsscs

Hlsmh,mitmkcs? Icch mh,midc (i`$nchkc `e "rccb"tl`i mih cstlbmtl`i ;mrhcr t` lb"ncbcit -`ikcr "r`dcsscs dmi stmr,c

7/31/2019 CPU Scheduling Algorithms (Presentation)

9/14

ZZ Z`uih'Z`%li sdfchunlik#

Xfc sdfchuncr msslkis m el)ch tlbc uilt "cr "r`dcss6dmnnch +umitub

7/31/2019 CPU Scheduling Algorithms (Presentation)

10/14

ZZ Z`uih'Z`%li sdfchunlik#

h,mitmkcs? ZZ sdfchunlik ls emlr Qr`,lhcs c.umn mb`uit `e tlbc t` c,cr* "r`dcss Ttmr,mtl`i h`cs i`t `ddur

Hlsmh,mitmkcs? C,ci tfc sf`rtcr "r`dcsscs icch t` $mlt le iub%cr `e "r`dcsscs

ls nmrkc Tcncdtlik .umitub tlbc ls m fukc lssuc=

7/31/2019 CPU Scheduling Algorithms (Presentation)

11/14

B.T &untl'nc,cn +ucuc Tdfchunlik#

ns` (i`$i ms tfc BE. Buntl'nc,cn Ecch%md(.ucuc# mnk`rltfb

>l,cs "rcecrcidc t` sf`rt mih 82'%`uih 5`%s

Tc"mrmtcs "r`dcsscs lit` dmtck`rlcs %msch `i tfclricch e`r tfc "r`dcss`r1 li,`n,cs "rc'cb"tl`i

Hleecrcit nc,cns `e .ucucs mrc li,`n,ch1 nl(c t`"'nc,cn1flkf'nc,cn mih n`$'nc,cn 5`% .ucucs

[lhcn* usch li [lih`$s1 &D 2T 91 -IS91T`nmrls1 Ict/TH mih 4rcc/TH

7/31/2019 CPU Scheduling Algorithms (Presentation)

12/14

B.T &untl'nc,cn +ucuc Tdfchunlik#

h,mitmkcs? Qr`,lhcs dmtck`rl3mtl`i ecmturc ;lkfn* ceecdtl,c mih ceeldlcit

Hlsmh,mitmkcs? Ttmr,mtl`i dmi `ddur ;mrh t` lb"ncbcit C)dcssl,c (i`$nchkc ls rc.ulrch e`r lb"ncbcitmtl`i iceeldlcit li `nhcr1 sn`$cr 6sliknc'd`rc< s*stcbs

7/31/2019 CPU Scheduling Algorithms (Presentation)

13/14

2,cr,lc$ `e tfc Tdfchunlik Hlsdl"nlics

M%()*+DQS

@!*!#X*)$($+

X$*'*)$'#X!

Z!-)'-!X!

EDET/ELE@ -`$ -`$ ;lkf -`$

TOE/TZX &chlub ;lkf &chlub &chlub

Z)$'#:Z)4' ;lkf &chlub &chlub ;lkf

Q*)*+8:4-!# &chlub -`$ ;lkf ;lkf

B.T ;lkf ;lkf &chlub B!#$

7/31/2019 CPU Scheduling Algorithms (Presentation)

14/14

+SCTX2IT0

XFMI3 \@S5