Insiza yomugqa womyalo we-jstack inamathisela kunqubo eshiwo noma ifayela eliwumgogodla futhi iphrinte ukulandelelwa kwesitaki sayo yonke imicu enamathiselwe emshinini obonakalayo, okuhlanganisa imicu ye-Java kanye nemicu yangaphakathi ye-VM, kanye nozimele besitaki bomdabu abazikhethela. Insiza iphinde yenze ukutholwa kwe-deadlock.
Isetshenziselwa ini i-Jstack?
Ku-core jstack iyithuluzi elilula kakhulu lokukukhombisa ukulandelana kwesitaki sayo yonke imicu ye-Java egijima ngaphakathi kwe-JVM eqondiwe. Vele ukhombe kunqubo ye-JVM nge-pid futhi uthole ukuphrinta kwakho konke ukulandelelwa kwesitaki sentambo ngaleso sikhathi.
Uyini umyalo we-Jstack?
Umyalo we-jstack uphrinta ukulandelelwa kwesitaki se-Java semicu ye-Java ngenqubo ecacisiwe ye-Java. Kufreyimu ngayinye ye-Java, igama lekilasi eligcwele, igama lendlela, inkomba yekhodi yebhayithi (BCI), kanye nenombolo yomugqa, uma itholakala, ziyaphrintwa. Amagama aphikisiwe ka-C++ awachithwanga.
Iyini i-JMAP ne-Jstack?
I-JMap ne-JStack cishe ziyizinsiza ezibaluleke kakhulu ebhokisini lamathuluzi lanoma yimuphi umthuthukisi we-Java. Ngokusebenza kwawo womabili la mathuluzi ehlanganisiwe, ungakwazi ukulungisa izinkinga futhi uqalise ukuxilonga kuhlelo lwe-java olubhala ngekhodi.
Ngiyithola kanjani i-Jstack ku-Linux?
Qalisa umyalo olandelayo kuseshini ye-linux, thola i-PID yokungena kwe-java. UKUZE UTHOLA I-JSTACK: Qalisa imiyalo elandelayo esikhundleni: ngendlela eya kumkhombandlela okuthi Hlaziya efakwe ngaphansi kwayo.
Ngiyisebenzisa kanjani i-Jstack?
Ikhiqiza izindawo zokulahla intambo kumafasitela
- Khomba inqubo. Yethula isiphathi somsebenzi ngokucindezela u-Ctrl + Shift + Esc bese uthola i-ID Yenqubo yenqubo ye-Java (Confluence). …
- Qalisa i-jstack Ukuthwebula Ukulahlwa Kwentambo Eyodwa. Lo myalo uzothatha ukulahlwa kochungechunge olulodwa lwe-id yenqubo , kulokhu i-pid ithi 22668:
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Kusho ukuthini ukubulala i-Linux?
Umyalo wokubulala usetshenziswa ku-Linux nakwamanye amasistimu wokusebenza afana ne-Unix ukumisa izinqubo ngaphandle kokuphuma noma ukuqalisa kabusha (okungukuthi, ukuqala kabusha) ikhompuyutha. Ngakho-ke, kubaluleke kakhulu ekuzinzeni kwezinhlelo ezinjalo.
Yini i-JCMD?
Insiza ye-jcmd isetshenziselwa ukuthumela izicelo zomyalo wokuxilonga ku-JVM, lapho lezi zicelo ziwusizo ekulawuleni Ukuqoshwa Kwendiza Ye-Java, ukuxazulula inkinga, nokuxilonga i-JVM ne-Java Applications.
Iyini i-JMAP ku-Java?
Isisetshenziswa somugqa womyalo we-jmap siphrinta izibalo ezihlobene nenkumbulo ze-VM esebenzayo noma ifayela eliyinhloko. … Ngaphezu kwalokho, ukukhishwa kwe-JDK 7 kwethule inketho ye- -dump:format=b,file= filename, okubangela ukuthi i-jmap ilahle inqwaba ye-Java ngefomethi kanambambili ye-HPROF kufayela elishiwo. Leli fayela lingabe selihlaziywa ngethuluzi le-jhat.
Iyini intambo ku-Java?
Intambo, kumongo we-Java, iyindlela elandelwayo lapho kwenziwa uhlelo. … Ku-Java, ukudala intambo kufezwa ngokusebenzisa isixhumi esibonakalayo nokwelula ikilasi. Yonke intambo ye-Java idalwe futhi ilawulwa yi-java. lang. Isigaba sochungechunge.
I-JMAP ithatha isikhathi esingakanani ukusebenza?
Inqubo ngokufingqa njengoba kushiwo ithatha cishe imizuzwana engama-20-30. Ngincoma ukuthi ukwenze ngokushesha ngangokunokwenzeka. Ngokushesha nje lapho usuqedile ngesinyathelo sokuqala ungaqalisa kabusha uhlelo lwakho lokusebenza ukuze uluqalise futhi lusebenze futhi. Esinyathelweni sesibili sizoguqula ifayela le-java core libe ifayela lokulahla inqwaba ye-java.
Ngiwusebenzisa kanjani umyalo we-JMAP ku-Linux?
ithuluzi le-jmap lithunyelwa nge-JDK. Nansi indlela okufanele uyibize ngayo: jmap -dump:live,file= lapho i-pid: i-Id Yenqubo ye-Java, okulahlwa kwayo kwenqwaba kufanele kuthathwe indlela yefayela: kuyindlela yefayela lapho ukulahlwa kwenqwaba kuzobhalwa khona. Qaphela: Kubaluleke kakhulu ukuthi udlule inketho ethi “bukhoma” kulayini womyalo.
Kuyini ukulahlwa kwenqwaba?
I-heap dump iyisithombe esifinyeziwe sazo zonke izinto eziku-Java Virtual Machine (JVM) inqwaba ngesikhathi esithile. Isofthiwe ye-JVM yabela inkumbulo yezinto ezivela enqwabeni yazo zonke izimo zekilasi nezinhla.
Kuphi ukulahlwa kwentambo ku-Linux?
Isinyathelo 1: Thola i-PID yenqubo yakho ye-Java
Ucezu lokuqala lolwazi ozoludinga ukuze ukwazi ukuthola ukulahlwa kwentambo yi-PID yenqubo yakho ye-Java. Qaphela: Ku-Linux naku-UNIX, kungase kudingeke usebenzise lo myalo njengokuthi sudo -u user jps -l, lapho “umsebenzisi” kuyigama lomsebenzisi lomsebenzisi inqubo ye-Java esebenza ngayo.
Yini equkethe intambo yokulahla?
I-thread dump iyisithombe esifushane sesimo sayo yonke imicu eyingxenye yenqubo. Isimo sochungechunge ngalunye lwethulwa ngendlela ebizwa ngokuthi i-stack trace, ebonisa okuqukethwe kwesitaki sochungechunge. Eminye imicu ingeyohlelo lwe-Java olusebenzayo, kanti eminye iwuchungechunge lwangaphakathi lwe-JVM.
Ngihlola kanjani ukuthi ngabe inqubo ye-Java iyasebenza ku-Unix?
Uma ufuna ukuhlola umsebenzi wohlelo lwe-java, sebenzisa umyalo we-'ps' ngezinketho ze-'-ef', lokho ngeke kukubonise umyalo kuphela, isikhathi kanye ne-PID yazo zonke izinqubo ezisebenzayo, kodwa futhi nohlu olugcwele, oluqukethe okudingekayo. ulwazi mayelana nefayela elisetshenziswayo kanye nemingcele yohlelo.