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OpenSuSE 安装bpftrace - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

OpenSuSE 安装bpftraceOpenSuSE-bpftrace-install1、可以选择源码安装,依赖顺序是:bpftrace <-- bcc <-- llvm clang不过过程难免曲折,可以继续探究或选择二进制包安装。2、先安装bcc及依赖(参考:INSTALL md):zypper s 1、可以选择源码安装,...
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OpenSuSE 安装dtrace - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

OpenSuSE 安装dtraceOpenSuSE-dtrace-install官网:https: software opensuse org搜索 dtrace,选择:找到指定的版本ymp文件,这里以15 1为例:OCICLI https: software opensuse org ymp home:Dead_Mozay:gst openSUSE_Leap_15 1 systemtap-dtrace ymp--End--官网:https://software.opens...
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Linux bcc tools使用总结(持续更新) - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

Linux bcc tools使用总结(持续更新)Linux-bcc-toolsbcc及依赖安装(参考:INSTALL md)。1、execsnoop短时进程追踪工具,抓出短时间内谁在搞事情。使用场景:有些进程运行时间太短(可能是不断崩溃重启),因而使用其他工具无法捕获 ...
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PHP passing $_GET in linux command prompt

...lice($argv, 2)), $_GET); include($argv[1]);'"' --" % php-cgi test1.php foo=123 &lt;html&gt; You set foo to 123. &lt;/html&gt; %cat test1.php &lt;html&gt;You set foo to &lt;?php print $_GET['foo']?&gt;.&lt;/html&gt; share ...
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Http长连接200万尝试及调优 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...是我们需要考虑的性能点之一。这种应用常见于消息推送系统,也称为comet应用,比如聊天室或即时消息推送系统等。comet应用具体可见我之前的介绍,在此不多讲。对于这类系统,因为很多消息需要到产生时才推送给客户端,...
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Can a CSV file have a comment?

... I have more often seen and used: #Csv/Version 1.9 Time,ValueA,ValueB 0.0, 123, 456 0.1, 123, 349 – Crog Aug 25 at 8:31 add a comment  |  ...
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Liquibase lock - reasons?

...he liquibase-scripts the lock was held. &lt;changeSet author="user" id="123"&gt; &lt;preConditions onFail="CONTINUE"&gt; &lt;not&gt;&lt;sequenceExists sequenceName="SEQUENCE_NAME_SEQ" /&gt;&lt;/not&gt; &lt;/preConditions&gt; &lt;createSequence sequenceName="SEQUENCE_NAME_SEQ"/&g...
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Passing argument to alias in bash [duplicate]

...ed to use a function $ foo () { /path/to/bar "$@" fixed args; } $ foo abc 123 will be executed as if you had done $ /path/to/bar abc 123 fixed args To undefine an alias: unalias foo To undefine a function: unset -f foo To see the type and definition (for each defined alias, keyword, func...
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How to check that a string is an int, but not a double, etc.?

... This will do some strange things such as return true for "+123". It is mitigated by that it's meant to return the true int but it still might not be what people want which is a strict int check. – jgmjgm Dec 11 '17 at 18:09 ...
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How do I get the width and height of a HTML5 canvas?

... 123 It might be worth looking at a tutorial: Firefox Canvas Tutorial You can get the width and he...