Uyithatha kanjani intambo yokulahla ku-Linux?
Khetha enye yezindlela ezilandelayo zokukhiqiza ukulahlwa kwentambo ye-Java ku-Unix:
- Inketho 1: OpenJDK / Sun JDK.
- Inketho 2: kill -3 Linux script (akuqhubeki)
- Inketho 3: kill -3 Linux script (eqhubekayo)
- Inketho yesi-4: Ipharamitha ye-JBoss EAP.
- Inketho 5: iskripthi se-jstack Linux (esiqhubekayo)
- Inketho 6: IBM J9.
9 okthoba. 2020 g.
Kuyini ukulahlwa kwentambo ku-Linux?
I-thread dump iwuhlu lwazo zonke izintambo ze-Java okwamanje ezisebenzayo ku-Java Virtual Machine (JVM). Kunezindlela ezimbalwa zokuthatha ukulahlwa kwentambo ku-JVM.
Ngikubheka kanjani ukulahlwa kwentambo?
Umsebenzi ongakwesokunxele ubonisa uhlu lwezinqubo ezisebenzayo njengamanje. Chofoza kunqubo ofuna ulwazi ngayo, bese ukhetha ithebhu yochungechunge ukuze uhlole imininingwane yochungechunge ngesikhathi sangempela. Chofoza inkinobho yokulahla intambo ekhoneni eliphezulu kwesokudla ukuze uthole ifayela lokulahla intambo.
Ngiyithatha kanjani i-thread dump kanye ne-heap dump?
- Isinyathelo 1: Thola i-PID yenqubo ye-java. I-Java JDK ithumela ngomyalo we-jps obala wonke ama-id wenqubo ye-java asebenza emshinini okuhlanganisa ne-PID yenqubo.
- Isinyathelo sesi-2: Cela Ukulahlwa Kwentambo ku-JVM. …
- Isinyathelo sesi-3: Cela Ukulahlwa Kwenqwaba ku-JVM.
17 unyaka. 2019 г.
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.
Uyini umehluko phakathi kokulahla inqwaba nokulahlwa kwentambo?
5 Izimpendulo. I-thread dump iwukulahla izitaki zazo zonke izintambo ezibukhoma. … Indawo yokulahla inqwaba indawo yokulahla inkumbulo yenqwaba ye-Java. Ngakho kuwusizo ekuhlaziyeni ukuthi iyiphi inkumbulo esetshenziswa uhlelo lokusebenza ngesikhathi esithile ukuze kube usizo kakhulu ekuhlonzeni izinkinga ezithile zenkumbulo, futhi uma kwenziwa ngezikhathi ezithile ezitholakalayo ekuhlonzeni ukuvuza kwenkumbulo.
Ngibheka kanjani ukuthi intambo iyasebenza ku-Linux?
Ukusebenzisa umyalo ophezulu
Umyalo ophezulu ungabonisa ukubuka kwesikhathi sangempela kochungechunge ngalunye. Ukuze unike amandla ukubuka kochungechunge kokuphumayo okuphezulu, cela phezulu ngenketho ethi “-H”. Lokhu kuzoklelisa yonke imicu ye-Linux. Ungakwazi futhi ukuvula noma ukuvala imodi yokubuka intambo ngenkathi i-top isebenza, ngokucindezela inkinobho ethi 'H'.
Ngazi kanjani uma i-JVM isebenza ku-Linux?
Ungasebenzisa umyalo we-jps (kusuka kufolda yomgqomo we-JDK uma ingekho endleleni yakho) ukuze uthole ukuthi yiziphi izinqubo ze-java (JVMs) ezisebenza emshinini wakho. Kuncike ku-JVM nama-libs omdabu. Ungase ubone imicu ye-JVM ivela nama-PID ahlukile ku-ps.
Uyibulala kanjani i-PID?
Ukubulala inqubo sebenzisa umyalo wokubulala. Sebenzisa umyalo we-ps uma udinga ukuthola i-PID yenqubo. Zama njalo ukubulala inqubo ngomyalo olula wokubulala. Lena indlela ehlanzekile yokubulala inqubo futhi inomphumela ofanayo nokukhansela inqubo.
Kufanele ngikuthathe nini ukulahla intambo?
Ukulungisa iphutha okungavamisile. Ungenza ukulahlwa kwentambo noma nini lapho ubona kufanelekile ukuhlaziya noma yini ehlobene nokubangwa kwe-thread lock, ukutholwa kwe-deadlock, ukuphikisana kwensiza yesistimu, ... Yingakho kukhona amathuluzi okwenza lula ukulahlwa kwentambo noma nini lapho sibona kufanelekile, hhayi kuphela ngemva kokuphahlazeka kwe-JVM.
Kuyini ukuhlaziywa kokulahlwa kwentambo?
Ukulahlwa kwentambo ye-Java kuyisithombe esifinyeziwe okwenziwa yiwo wonke umucu ku-JVM endaweni ethile ngesikhathi. … Lokhu kuwusizo ikakhulukazi uma uhlelo lwakho lwe-Java ngezinye izikhathi lubonakala lulenga lapho lusebenza ngaphansi komthwalo, njengoba ukuhlaziya kokulahlwa kuzobonisa lapho imicu ibambeke khona, kungaba yi-deadlock noma enye ingxabano yentambo.
Ngingalandelela kanjani ukuthi uhlelo lokusebenza lunokuvuza kochungechunge?
Lokhu kungenziwa ngokusebenzisa izindlela ezilandelayo: Nikeza amagama ahlukile nachazayo emicushweni edalwe ekusetshenzisweni. - Engeza ukungena kwelogi kuwo wonke uchungechunge ezindaweni ezihlukahlukene zokungena kanye nokuphuma emicu. Shintsha amaleveli okumisa okulungisa iphutha (ukulungisa iphutha, ulwazi, iphutha njll) futhi uhlaziye imilayezo yelogi.
Ngiyithola kanjani indawo yokulahla inqwaba?
Yethula i-jvisualvm ngaphansi kwefolda ye-bin. Chofoza kwesokudla kwenye yenqubo ye-Java. Chofoza inketho ethi 'I-Heap Dump' kumenyu yokudonsela phansi. Ukulahlwa kwenqwaba kuzokwenziwa.
Ukuhlaziya kanjani ukulahlwa kwe-JMAP?
Umyalo we-jhat udlulisa ifayela lokulahla inqwaba ye-java bese wethula iseva yewebhu. I-jhat ikuvumela ukuthi uphequlule izindawo zokulahla inqwaba usebenzisa isiphequluli sakho sewebhu osithandayo. Qaphela ukuthi kufanele ube nokuphumayo kwefomethi kanambambili ye-hprof ukuze ukwazi ukuyihlaziya ngokuthi jhat . Ungasebenzisa inketho yefomethi=b ukuze ukhiqize ukulahla ngale fomethi.
Ikuphi intambo yokulahla ukubulala 3?
Uma kusetshenziswa inketho ethi 'kill -3' ukulahlwa kochungechunge kuthunyelwa ekusakazweni kwephutha okujwayelekile. Uma usebenzisa uhlelo lwakho lokusebenza ku-tomcat, ukulahlwa kwentambo kuzothunyelwa ku /logs/catalina.