Virtual memory na kwamfuta da kuma yadda za a kara

Virtual memory ne na musamman fasahar da wanda ƙwaƙwalwar management na kwamfuta tsarin da amfani da Multi-aikin Tsarukan aiki. Jigon wannan fasahar ta'allaka ne da cewa kowane shirin domin tabbatar da ingancinsu a matsayin wani ɓangare na irin wannan na'urar, shi yana nufin jimlar memory na kwamfuta a raba wuri. Magance wannan a wani hanya shi ne nuna a kan jiki a koyaushe cewa samar da wannan ƙwaƙwalwar. A karuwa a ƙwaƙwalwar yadda ya dace, ta shirya a cikin wannan hanya, aka samu da gaskiya cewa bukata ƙwaƙwalwar sarari kẽɓantacce ne ga kõwane yanã gudãna shirin. Bugu da kari, da mai rumfa memory na kwamfuta damar mai amfani don kara jimlar girma, kai Figures cewa wuce wadanda dauke a cikin jiki da na'urorin. Wannan an tabbatar da yin famfo fasahar sauran albarkatun a cikin mangaza.

Ana zargin wannan fasahar da dangantaka da tsakiyar karni na karshe. Kafin wannan, biyu memory matakin amfani da sarrafa kwamfuta na'urorin - firamare da kuma sakandare. Ana zargin rumfa memory an shibtarsu da bukatar samun wani sauki iko yanayin zuwa gare shi.

Lokacin amfani da mai rumfa memory na kwamfuta ƙwarai simplifies da shirye-shirye da tsari domin gusar da bukatar a kula da m iko a kan adadin used da kuma free ƙwaƙwalwar ajiya ko a raba shi tsakanin Gudun shirye-shirye. Domin kusan kowace aikace-aikace a guje a karkashin wannan fasahar samar da dama ga dukan adireshin sarari, ko da kuwa da ƙarfi a kan wani jiki na'urorin lasafta.

A mafi janar hankali, da mai rumfa memory na kwamfuta aikin da wadannan ayyuka:

- simplifies da rationalizes magance memory aikace-aikace a guje.

- samar da ingantaccen memory management - RAM, by selection da kuma ajiya na rare da ake yawan amfani da aikace-aikace.

- zama m kwamfuta matakai a irin wannan hanyar da kowane tsari ne aiwatar kamar yadda idan dukan kwamfuta na memory.

A zamani kwakwalwa haifar rumfa memory fasahar ne da goyan bayan da a kudi na hardware support, sai dai na musamman ayyuka, wanda ya bukatar da goyon baya na sosai high gudun aiki yanayin. Yawanci, wadannan na'urorin da ake ba tsara don taro amfani, amma saboda su multifunktsional matsin iyakantaccen.

Dauke da fasahar da aka aiwatar a manyan hanyoyi biyu na shirya.

Paging ya shafi rarraba memory cikin shafukan da ajali girma, kamar yadda mai mulkin - 4096 bytes. Ciki, shi ya ƙunshi wani file size, wanda aka cure bayanai game da serial number (page lambar) da kuma ta kawar da. A CPU kwamfuta canza shafin lambar a cikin daidai adireshin. The processor sabobin tuba cikin rumfa page lambar a cikin daidai adireshin a cikin jiki na'urar. The tsarin aiki a kan nasu da "waƙoƙi" da yin amfani da wannan memory, da kuma controls shi, dangane da yadda aiki shi ne ko ba.

Kashi kungiyar dogara ne a kan gaskiyar cewa dukan mai rumfa memory na kwamfuta da aka raba wasu sassa - segments ga abin da tsarin aiki da kuma bayar da damar 'yancin kowane shirin. The magance aiwatar a cikin wannan Hanyar ne kusan kama da amfani ga page-yanayin, amma a rarraba kashi fragmentation ya auku, wanda adversely rinjayar da gudun a PC. Don shawo kan wannan rashin jin dadin zai iya zama a cikin hanyoyi biyu: ko dai ya kara adadin ƙwaƙwalwar ajiyar da amfani ko free, da tsaftacewa da shi na dole ba data. Don koyon yadda za ka saki mai rumfa memory, wani mai amfani iya koma zuwa Reference Department na tsarin aiki da aka sanya a kan kwamfutarka kuma akwai wannan mai sauki hanya, daki-daki fentin.

Kara adadin rumfa memory za a iya cimma a manyan hanyoyi biyu - da tsarkakewa, kamar yadda aka bayyana a sama, ko kara ta girma ta installing sabon kayan aiki. Akwai da yawa shirye-shirye da za su gaya maka yadda za a kara yawan mai rumfa memory, da kuma ingancin taimako su yi shi da kanka.