Swappiness: Yadda za a daidaita yadda ake amfani da ƙwaƙwalwar ajiya

Anan cikin Ubunlog Mun sadaukar da kanmu - ko ƙoƙarin sadaukar da kanmu - ga duk masu amfani, kuma hakan ya haɗa da saitin kayan masarufi daban-daban. Kuma a wata hanya muna so mu yi tunanin cewa tare da koyarwar da muke nunawa a nan muna ba da gudummawa ta wata hanya don inganta ƙwarewar mai amfani a cikin wannan distro wanda muke so sosai (a cikin kowane dandano), wanda shine dalilin da ya sa muke yawan buga jagororin. domin sami mafi kyawun aikin mai yiwuwa, musamman a cikin kayan aikin da suka fi dacewa.

Yanzu, ba tare da ci gaba ba, za mu nuna yadda za a daidaita amfani da ƙwaƙwalwar ajiya mai amfani a Ubuntu, ta irin wannan hanyar don kauce wa hakan a ƙarshe ya ƙare ya zama ja da yin aiki mafi muni fiye da yadda zai kasance ba tare da shi ba. Kuma shine duk da cewa ra'ayin amfani da fayil ko swap ba shi da kyau a cikin kansa amma akasin haka ne, idan ba a aiwatar da shi sosai ba zai iya samar da amfani mai yawa na rumbun diski, wanda ya fi hankali a hankali RAM memory.

A saboda wannan dalili, yin amfani da ɓangaren musanya ya kamata a iyakance ga yanayin da babu wata mafita a ciki face amfani da shi, a wannan lokacin zai tallafawa babban ƙwaƙwalwar (wanda shine RAM). Idan maimakon haka muke amfani da shi a kowane lokaci, wani lokacin ma kafin RAM, aikinmu zai zama an hukunta shi. Bari mu gani to yadda za a daidaita amfani da ƙwaƙwalwar ƙwaƙwalwar ajiya a cikin Linux ta amfani da umarnin Swappiness.

A cikin tsarin aikinmu, ƙirƙirar ƙwaƙwalwar ajiyar ƙwaƙwalwar ajiya yawanci ana aiwatarwa yayin aiwatarwar shigarwa, a wanne lokaci muke ayyana tushen ɓangaren (/), ɓangaren ajiya (/ gida) da musayar musayar ko sauyawa, wanda yawanci ana aiwatar dashi akan / dev / sda5. Sigar kwayar da ke sarrafa amfani da ƙwaƙwalwar ajiyar ƙwaƙwalwa ita ce sauƙin da aka ambata a baya, kuma asali za mu iya cewa shi ne ke da alhakin bayyana sau nawa muke samun damar musayar bangare da yawan abubuwan da muke kwafa a ciki, ta hanyar gardama da ta bambanta tsakanin 0 da 100.

Matsakaicin tsoho a cikin shigarwar Linux shine 60, amma da yake yana da sauƙin ɗauka, ba duk abubuwan daidaitawar kayan aiki suke ɗaya ba sabili da haka ba shi da ma'ana a ci gaba da wannan matakin ba tare da la'akari da wane namu bane. Ana adana wannan ƙimar a cikin fayil / proc / sys / vm / swappiness, kuma za mu iya bincika ta:

cat / proc / sys / vm / swappiness

Kusan tabbas zai kasance a 60, kuma idan wannan shine lamarin zamu iya canza shi, musamman Idan muna da fiye da 4 GB na ƙwaƙwalwar ajiyar RAM, tunda a wannan yanayin yawanci muna buƙatar ƙarancin ƙwaƙwalwar kamala ko babu. Amma kafin bayanin yadda ake gyara wancan, bari mu ɗan duba game da dabaru da ke bayan wannan duka game da ƙwaƙwalwar ƙwaƙwalwar ajiya da sauyawa; Kuma shine lokacin da aka bar shi ta tsoho a 60, abin da aka gaya wa kwaya shi ne ya je ya yi amfani da ƙwaƙwalwar ajiya lokacin da RAM ɗinmu ke da kashi 40 cikin ɗari ko lessasa da ƙarfinsa na kyauta. Saboda haka, idan muka saita canzawa daidai da 100 za'a iya amfani da ƙwaƙwalwar ajiya ta kowane lokaci, kuma idan muka barshi da wata ƙima ƙima, za'a yi amfani dashi ne kawai lokacin da RAM ɗinmu ke gab da ƙarewa. Mafi ƙarancin abin da zai yiwu shine 1, tunda barin ƙimar daidai da 0 muna kashe ƙwaƙwalwar kama-da-wane gaba ɗaya.

Don haka abin da dole muyi shine shigar da umarni mai zuwa daga tashar (Ctrl + Alt T):

sudo sysctl vm.swappiness = 10

Yanzu darajar swappiness zai kasance 10, sannan kuma da wuya ƙwaƙwalwar ajiya tayi amfani da shi. Da zarar an canza wannan ƙimar ba buƙatar sake kunna kwamfutar amma yana aiki nan take, kuma a zahiri idan muka sake saita darajar zata kasance a 60 kamar da, saboda abinda zamu bukata shine barin wannan canjin dindindin. Don yin wannan, da zarar munyi amfani da kwamfutarmu kuma mun tabbatar da cewa komai yayi daidai da sabon darajar swappiness, muna aiwatarwa:

sudo nano /etc/sysctl.conf

bayan haka muna neman rubutun vm.swappiness = kuma ƙara darajar da ake so bayan alamar "=". Mun adana fayil ɗin kuma yanzu haka, canjin zai kasance na dindindin.