blocks|key|1445750|text|据新闻组Android开发人员称，https://groups.google.com/forum/?fromgroups=#!topic/android-developers/fsMZFz9IoNo|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1445751|设备上的日志缓冲区为64+KB。时间戳、进程ID和日志级别以紧凑的格式存储，因此您实际上可以从logcat+-d+-v+<mode>中获得超过64+KB的格式化数据。|blockquote|style|CODE|1445752|entityMap|0|LINK|mutability|MUTABLE|url|https://groups.google.com/forum/?fromgroups=#!topic/android-developers/fsMZFz9IoNo^0|H|2A|0|0|1B|J|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@$A|V|B|W|G|H]]|9|@]|C|$]]|$1|I|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

According to the newsgroup Android Developers, <a href="https://groups.google.com/forum/?fromgroups=#!topic/android-developers/fsMZFz9IoNo" rel="noreferrer">logcat buffer size</a>:

<blockquote>
 The log buffers on the device are 64 KB. The timestamp, process ID,
 and log level are stored in a compact format, so you may actually get
 more than 64 KB of formatted data out of <code>logcat -d -v &lt;mode&gt;</code>.
</blockquote>

blocks|key|1445835|text|“开发人员选项”中的"Logger缓冲区大小选项“|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1445836|它允许将大小更改为64k到16M之间的几个值。|1445837|然后，adb+logcat+-g立即显示更新限制。|CODE|1445838|在5.1.1上进行了测试，这个答案声称它是最近添加的。|1445839|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/32094784/895245^0|A|F|0|0|3|D|0|D|4|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|Y|8|@$9|Z|A|10|B|J]]|D|@]|E|$]]|$1|K|3|L|5|6|7|11|8|@]|D|@$9|12|A|13|1|14]]|E|$]]|$1|M|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

"Logger buffer size option" in "Developer options"

It allows to change the size to a few values between 64k and 16M.

<code>adb logcat -g</code> then immediately shows the update limit.

Tested on 5.1.1, and <a href="https://stackoverflow.com/a/32094784/895245">this answer</a> claims that it is a recent addition.

blocks|key|1445886|text|见当前缓冲区大小|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1445887|adb+logcat+-g|code-block|syntax|javascript|1445888|设置所有类型的缓冲区大小(主、系统、崩溃)|1445889|adb+logcat+-G+16M+#+16M+can+be+replace+by+(128K+~+16M)|1445890|设置特定类型的缓冲区大小(主、系统、崩溃)|1445891|adb+logcat+-b+system+-G+8M+#+system+can+be+replaced+with+'main'+or+'crash'|1445892|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

<h3>See current buffer size</h3>

<pre><code>adb logcat -g
</code></pre>

<h3>Set all type buffer size (main, system, crash)</h3>

<pre><code>adb logcat -G 16M # 16M can be replace by (128K ~ 16M)
</code></pre>

<h3>Set specific type buffer size (main, system, crash)</h3>

<pre><code>adb logcat -b system -G 8M # system can be replaced with 'main' or 'crash'
</code></pre>

blocks|key|1922326|text|设置日志环缓冲区的大小|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1922327|adb+logcat+-G+<size>+|code-block|syntax|javascript|1922328|附加K或M表示千字节或兆字节|1922329|示例：adb+logcat+-G+512K|offset|length|style|CODE|1922330|entityMap^0|0|0|0|3|I|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@$K|U|L|V|M|N]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Set the size of the log ring buffer

<pre><code>adb logcat -G &lt;size&gt; 
</code></pre>

Append K or M to indicate kilobytes or megabytes

Example: <code>adb logcat -G 512K</code>

blocks|key|1445787|text|不，根据这里，设备上的日志缓冲区似乎是64+KB。时间戳、进程ID和日志级别以紧凑的格式存储，因此您实际上可以从logcat+-d+-v+<mode>中获得超过64+KB的格式化数据。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1445788|也见堆栈溢出问题http://developer.android.com/tools/debugging/debugging-log.html。|1445789|无论如何，为了在其他地方保存日志，您可以使用http://developer.android.com/tools/debugging/debugging-log.html。也许能帮到你。|1445790|entityMap|0|LINK|mutability|MUTABLE|url|https://groups.google.com/forum/?fromgroups=#!topic/android-developers/fsMZFz9IoNo|1|http://developer.android.com/tools/debugging/debugging-log.html|2^0|1K|J|4|2|0|0|8|1R|1|0|M|1R|2|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|F|3|G|5|6|7|10|8|@]|D|@$9|11|A|12|1|13]]|E|$]]|$1|H|3|I|5|6|7|14|8|@]|D|@$9|15|A|16|1|17]]|E|$]]|$1|J|3|-4|5|6|7|18|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]|R|$5|M|N|O|E|$P|S]]|T|$5|M|N|O|E|$P|S]]]]

No, as per <a href="https://groups.google.com/forum/?fromgroups=#!topic/android-developers/fsMZFz9IoNo" rel="nofollow">here</a> it seems that the log buffers on the device are 64&nbsp;KB. The timestamp, process ID, and log level are stored in a compact format, so you may actually get more than 64&nbsp;KB of formatted data out of <code>logcat -d -v &lt;mode&gt;</code>.

See also Stack&nbsp;Overflow question <a href="http://developer.android.com/tools/debugging/debugging-log.html" rel="nofollow">What is the size limit for Logcat?</a>.

Anyway, for saving logs elsewhere, you have <a href="http://developer.android.com/tools/debugging/debugging-log.html" rel="nofollow">Reading and Writing Logs</a>. That maybe could help you.

blocks|key|1922276|text|缓冲区大小是由内核决定的，在*/drivers/staging/android/logger.c中可以找到。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1922277|使用了哪些缓冲区，Android版本的大小也发生了变化。Android3.0+(蜂窝)和更新也有一个系统缓冲区，所有四个都是256+KB。您必须重新编译内核才能更改它。|offset|length|1922278|entityMap|0|LINK|mutability|MUTABLE|url|https://en.wikipedia.org/wiki/Android_version_history#Android_3.0_Honeycomb_.28API_level_11.29^0|0|S|A|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

The buffer size is determined by the kernel, found in */drivers/staging/android/logger.c.

Which buffers are used and the size has changed with Android versions. <a href="https://en.wikipedia.org/wiki/Android_version_history#Android_3.0_Honeycomb_.28API_level_11.29" rel="nofollow">Android 3.0</a> (Honeycomb) and newer also have a system buffer, and all four are 256&nbsp;KB. You have to recompile the kernel to change it.

blocks|key|1445821|text|您可以在属性文件android\bin\idea.properties中增加idea.cycle.buffer.size=1024的值。这对我有用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1445822|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You can increase the value of idea.cycle.buffer.size=1024 in property file android-studio\bin\idea.properties. This worked for me.

blocks|key|953338|text|为了通过亚行将特定Android设备的logcat缓冲区设置为16+To，我使用了：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|953339|adb+-s+2615a1d4e3174a6e+logcat+-G+16M|offset|length|style|CODE|953340|但你可以用：|953341|adb+logcat+-G+16M|953342|或将以前的缓冲区大小设置为：|953343|adb+logcat+-G+256K|953344|entityMap^0|0|0|11|0|0|0|H|0|0|0|I|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@$D|T|E|U|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|V|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|W|8|@$D|X|E|Y|F|G]]|9|@]|A|$]]|$1|L|3|M|5|6|7|Z|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|10|8|@$D|11|E|12|F|G]]|9|@]|A|$]]|$1|P|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|Q|$]]

To set logcat buffer to 16Mb for a specific Android device through adb, I used:

<code>adb -s 2615a1d4e3174a6e logcat -G 16M
</code>

But you can use just:

<code>adb logcat -G 16M
</code>

Or set previous buffer size with:

<code>adb logcat -G 256K
</code>

I noticed that the size of the logcat buffer varies on different devices. Assuming I have root permissions on my device, is there a way to change the buffer size of the main buffer at runtime? If not, then assuming I can rebuild the Android image, how do I change it at compile time? I'm looking to enlarge it for diagnostic purposes.

How to change size of logcat buffer in Android?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我注意到logcat缓冲区的大小在不同的设备上有所不同。假设我在设备上有根权限，是否有办法在运行时更改主缓冲区的缓冲区大小？如果没有，那么假设我可以重建Android映像，那么如何在编译时更改它呢？我想把它放大来诊断。

问如何在Android中改变logcat缓冲区的大小？
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