摘要:
When a transition between user mode and kernel mode is required in an operating system, a context switch is not necessary; a mode transition is not by itself a context switch. However, depending on the operating system, a context switch may also take place at this time. 阅读全文
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http://engin.bzzzt.biz/embeddeddb.shtmlUPDATE 20-OCT-2008:Instead of creating a DBCommand for each iteration, I started to use one DBCommand instance, as any normal person would do in the first place. And it chagned the results quite a bit. It looks like object initiation for Firebird is expensive.. 阅读全文
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The auto script is including two parts.1. Use crontab to modify and install the daily jobcrontab -e0 20 * * * /path/upload.sh crontab: installing new crontabcrontab will run script at /path/upload.sh at 8PM everyday. 2. script upload.shThis script is to batch upload *.csv file to xxx.xxx.xxx.xxx xx 阅读全文