logcat 设置缓存区设置buff

最新推荐文章于 2024-08-20 15:46:27 发布

原创最新推荐文章于 2024-08-20 15:46:27 发布 · 1.2w 阅读

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CC 4.0 BY-SA版权

本文介绍了Android系统中Logcat的两种缓冲区分配方式：Kernel级和Logd级，并详细解释了如何通过开发者选项或命令行调整Logcat缓冲区大小。

logcat 的buff 有2种分配方式，一种是在kernel的，一种是logd， MM用的是在logd的这种的

system/core/liblog/Android.mk

ifneq ($(TARGET_USES_LOGD),false)
liblog_sources := logd_write.c log_event_write.c
else
liblog_sources := logd_write_kern.c
endif

修改logcat的buff有可以从开发者选项中设置，
也可以从logcat -G 10M 设置

root@xx:/ # logcat -g
main: ring buffer is 4Mb (839Kb consumed), max entry is 5120b, max payload is 4076b
system: ring buffer is 4Mb (2Mb consumed), max entry is 5120b, max payload is 4076b
crash: ring buffer is 4Mb (0b consumed), max entry is 5120b, max payload is 4076b
root@xx:/ # logcat -G 11M
root@xx:/ # logcat -g
main: ring buffer is 11Mb (854Kb consumed), max entry is 5120b, max payload is 4076b
system: ring buffer is 11Mb (2Mb consumed), max entry is 5120b, max payload is 4076b
crash: ring buffer is 11Mb (0b consumed), max entry is 5120b, max payload is 4076b
root@xx:/ #