Tuesday, April 26, 2016

Increase the number of open files limit on Ubuntu 12.04

›
On Ubuntu 12.04, every process could only use up to 1024 open files including socket handlers, file handlers, etc. When we develop scalable...
Tuesday, April 12, 2016

Memory leak issue in MySQL C++ connector 1.1.7

›
I have used the official C++ connector (Version 1.1.7) for MySQL recently, but found some weird memory leak, though I was totally following ...
1 comment:
Wednesday, March 30, 2016

Fix cURL CURLOPT_TIMEOUT_MS bug

›
cURL is a very useful library written in C which allows you to do a lot of network jobs like calling HTTP REST API, etc. Recently, I need ...

How to add timeout to an XMLRPC-C client

›
XMLRPC-C is very efficient if you need a remote process call protocol. I happen to need to add timeout limit to an XMLRPC client based on...
Thursday, May 28, 2015

How to test the network bandwidth between two machines on Linux

›
1. Install iperf on Ubuntu: sudo apt-get install iperf on Centos: sudo yum install -y iperf 2.On one machine (haha.google.com) iper...
Monday, April 27, 2015

How to figure out segmentation fault (segfault)

›
Well, sometime we do meet segfaults on Linux/Unix systems. We definitely do not like them, as they are hard to debug. (1) What is segfault...
Tuesday, April 21, 2015

How to monitor network traffics on Ubuntu

›
(1) Wireshark: shows network packages sudo apt-get install wireshark sudo wireshark (2) tcptrack: shows traffic per IP and port numb...