{"id":102926,"date":"2022-01-09T15:37:28","date_gmt":"2022-01-09T13:37:28","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/%d0%b2%d1%82%d0%be%d1%80%d0%b0%d1%8f-%d0%b2%d0%b5%d1%80%d1%81%d0%b8%d1%8f-%d0%bf%d0%b0%d1%82%d1%87%d0%b5%d0%b9-c-%d1%80%d0%b5%d1%81%d1%82%d1%80%d1%83%d0%ba%d1%82%d1%83%d1%80%d0%b8%d0%b7%d0%b0%d1%86"},"modified":"2022-01-09T15:37:28","modified_gmt":"2022-01-09T13:37:28","slug":"%d0%b2%d1%82%d0%be%d1%80%d0%b0%d1%8f-%d0%b2%d0%b5%d1%80%d1%81%d0%b8%d1%8f-%d0%bf%d0%b0%d1%82%d1%87%d0%b5%d0%b9-c-%d1%80%d0%b5%d1%81%d1%82%d1%80%d1%83%d0%ba%d1%82%d1%83%d1%80%d0%b8%d0%b7%d0%b0%d1%86","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/novosti-interneta\/%d0%b2%d1%82%d0%be%d1%80%d0%b0%d1%8f-%d0%b2%d0%b5%d1%80%d1%81%d0%b8%d1%8f-%d0%bf%d0%b0%d1%82%d1%87%d0%b5%d0%b9-c-%d1%80%d0%b5%d1%81%d1%82%d1%80%d1%83%d0%ba%d1%82%d1%83%d1%80%d0%b8%d0%b7%d0%b0%d1%86","title":{"rendered":"Zweite Version von Patches zur Restrukturierung der Header-Dateien des Linux-Kernels","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Ingo Molnar hat die zweite Version eines Patch-Sets vorgestellt, das die Zeit zum Neukompilieren des Kernels erheblich reduzieren kann, indem die Hierarchie der Header-Dateien umstrukturiert und die Anzahl der gegenseitigen Abh\u00e4ngigkeiten verringert wird. Diese neue Version unterscheidet sich von der vor wenigen Tagen vorgestellten ersten Version durch die Anpassung an den Kernel 5.16-rc8, das Hinzuf\u00fcgen zus\u00e4tzlicher Optimierungen und die Implementierung der Unterst\u00fctzung f\u00fcr den Compiler Clang. Bei der Verwendung von Clang erm\u00f6glichte der Einsatz der Patches eine Reduzierung der Kompilierzeit um 88 % oder um 77 % bei den CPU-Ressourcennutzung. Bei einer vollst\u00e4ndigen Neubauten des Kernels mit dem Befehl \u201emake -j96 vmlinux\u201c verringerte sich die Kompilierzeit von 337,788 auf 179,773 Sekunden. <\/p>\n

In der neuen Version wurde auch das Problem mit den GCC-Plugins gel\u00f6st, Fehler, die w\u00e4hrend der anf\u00e4nglichen \u00dcberpr\u00fcfung aufgetreten sind, behoben und die Duplikate der Strukturdeklaration \u201etask_struct_per_task\u201c vereinheitlicht. Dar\u00fcber hinaus wurde die Optimierung der Header-Datei linux\/sched.h fortgesetzt und eine Optimierung der Header-Dateien des RDMA-Subsystems (Infiniband) implementiert, die die Kompilierungszeit im Vergleich zur ersten Patch-Version um weitere 9 % reduzierte. Die Anzahl der C-Dateien des Kernels, die die Header-Datei linux\/sched.h einbinden, wurde von 68 % auf 36 % im Vergleich zur ersten Patch-Version gesenkt (von 99 % auf 36 % im Vergleich zum urspr\u00fcnglichen Kernel).
\n
Quelle: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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Im Vergleich zur vor einigen Tagen vorgeschlagenen ersten Version unterscheidet sich die neue Variante durch die Anpassung an den Kernel 5.16-rc8, zus\u00e4tzliche Optimierungen sowie Unterst\u00fctzung f\u00fcr den Build mit dem Clang-Compiler. 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