From: Ilya Kurdyukov <ilyakurdyukov@basealt.ru> To: devel@lists.altlinux.org Subject: [devel] ускорение lzma декомпрессии (XZ Utils) Date: Mon, 13 Dec 2021 16:02:59 +0700 Message-ID: <7b94c011-f308-e8cd-d2de-ffdb4ea675d0@basealt.ru> (raw) In-Reply-To: <fdfc15879df0f79c45dd39e29c59cdd9@altlinux.ru> Заменил ветвление в LZMA декомпрессоре на ассемблерную вставку с CMOV, на моём компьютере даёт 35% ускорение при распаковке 300мб из сжатой билд директории от Python 3. На шлюзе basalt нормально проверить не получается, потому что на нём переменная нагрузка, то с патчем 10-20% быстрее, а иногда без патча получается быстрее. Мне нужна помощь в проверке. Может сильно зависеть от модели процессора. Патч: https://gist.github.com/ilyakurdyukov/f514418f3affd677e1ac408ec0c09188 На x86 (32-бит) не проверял, но тоже должно работать. Если будет стабильное ускорение, но можно предложить в апстрим.
next prev parent reply other threads:[~2021-12-13 9:02 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-13 1:52 ` [devel] [#291873] EPERM (try 2) rpmrebuild-arepo.git=3.1.13-alt1 Dmitry V. Levin 2021-12-13 1:56 ` Vitaly Lipatov 2021-12-13 9:02 ` Ilya Kurdyukov [this message] 2021-12-13 11:59 ` [devel] ускорение lzma декомпрессии (XZ Utils) Ilya Kurdyukov 2021-12-13 14:52 ` Ilya Kurdyukov 2021-12-13 15:08 ` Vitaly Chikunov 2021-12-13 15:42 ` Ilya Kurdyukov 2021-12-13 16:49 ` Andrey Savchenko 2021-12-13 18:59 ` Andrey Savchenko 2021-12-14 3:16 ` Ilya Kurdyukov 2021-12-13 16:58 ` Vitaly Chikunov 2021-12-14 2:53 ` Ilya Kurdyukov 2021-12-14 6:11 ` Ilya Kurdyukov 2021-12-14 7:25 ` Ilya Kurdyukov 2021-12-14 15:22 ` Andrey Savchenko 2021-12-14 17:12 ` Alexey V. Vissarionov 2021-12-14 17:34 ` Andrey Savchenko 2021-12-15 1:07 ` Alexey V. Vissarionov 2021-12-15 7:29 ` Ilya Kurdyukov 2021-12-15 15:55 ` Andrey Savchenko 2021-12-15 15:57 ` Andrey Savchenko 2021-12-16 4:22 ` Ilya Kurdyukov 2021-12-14 0:22 ` [devel] [#291873] EPERM (try 2) rpmrebuild-arepo.git=3.1.13-alt1 Dmitry V. Levin 2021-12-14 5:04 ` Alexey V. Vissarionov 2021-12-14 8:57 ` Dmitry V. Levin 2021-12-14 17:31 ` Vitaly Lipatov 2021-12-14 20:50 ` Dmitry V. Levin 2021-12-14 22:44 ` Vitaly Lipatov
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