这是一个自己在项目中遇到的问题. 由于一直以来,公司都是用的Linux服务器,这次为客户做项目,换成了winserver. 项目中有一项功能是Excel导出,采用PHPEXCEL类库实现.由于是个小项目,直接用PhpStudy搭建了服务器环境,代理选的是Apache,注册系统服务,自启动,以Network Service身份登录. 测试的时候导出功能报错,提示Could not open php://output for writing.目测是由于Network Service账号的权限不足导致…

How to Use DTrace to Troubleshoot Java Native Memory Problems on Oracle Solaris 11 Hands-On Labs of the System Admin and Developer Community of OTN by Wang Yu, Vincent Liu, and Gary Wang This lab will introduce the basic concepts of DTrace and provid…

CHAPTER 7.Input and Output Patterns 本章关注一个最经常忽略的问题,来改进MapReduce 的value:自定义输入和输出.我们并不会总使用Mapreduce本身的方式加载或存储数据.有时,可以跳过在hdfs存储数据这项耗时的阶段,仅存储一些数据,不是全部的,或直接在MapReduce结束后输送给后面的处理.有时,基本的Hadoop规范,文件块和输入分割不能完成你需要的事情,所以要使用自定义的InputFormat或OutputFormat. 本章三个模式处理…

Pychart PyChart is a Python library for creating high quality Encapsulated Postscript, PDF, PNG, or SVG charts. It currently supports line plots, bar plots, range-fill plots, and pie charts. Because it is based on Python, you can make full use of Pyt…

KMS:kurento媒体服务,即 kurento media server 很庞大的一个WEBRTC项目,GIT库主项目:https://github.com/Kurento 基础实现,修改了gst-plugin-bad,打开了openh264的插件(依赖于openh264) 然后在其上实现了kms-core, kms-elements, kms-filters,然后实现了相应的服务KMS 官方版本一直只支持ubuntu 16.04,相应docker也是16.04 最新ubuntu编译时遇到了…

如何解决cuffdiff运行结果中表达量为0的情况? cuffdiff -o cdiffout -b ref.fasta -u -p 15 --library-type fr-firststrand \ -L H_3,O_3,F_3 cuffmergeout/merged.gtf \ tophatout/H-1-3/accepted_hits.bam,tophatout/H-2-3/accepted_hits.bam,tophatout/H-3-3/accepted_hits.bam \ top…

https://katyscode.wordpress.com/2013/05/17/introduction-to-multi-threaded-multi-core-and-parallel-programming-concepts/ In this article I’m going to present a gentle and modernized introduction to multi-threaded and parallel programming. While there…

通过wiringPi等library, 在user space 通过/dev/i2c来读写i2c设备的方案不在本文讨论了. 编译SENSORS_PCF8591 模块 在Default raspberryPi的内核中,pcf591模块是没有编译的. 查看drivers\hwmon\Makefile obj-$(CONFIG_HWMON) += hwmon.o ... obj-$(CONFIG_SENSORS_PCF8591) += pcf8591.o ... 修改arch\arm\configs\…

Information:Gradle tasks [:myapp2:assembleDebug] Error:Some file crunching failed, see logs for details Error:Execution failed for task ':myapp2:mergeDebugResources'. > Error: Some file crunching failed, see logs for details Information:BUILD FAILED…

ASP.NET Core 2.2 has been out for a while now and with it come some significant improvements to the hosting model if you plan on hosting in IIS. In previous versions you were required to host ASP.NET Core applications by proxying requests from IIS in…