慢

QTimeLine starts very slowly

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Need to set the time line execution curve as linear.

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	m_time_line.reset(new QTimeLine(m_span_msecs * count, this));
	m_time_line->setFrameRange(0, count);
	m_time_line->setEasingCurve(QEasingCurve::Linear);
	// below is deprecated
	//m_time_line->setCurveShape(QTimeLine::LinearCurve);

refer to:
http://www.wjhsh.net/rickyk-p-4044875.html

VMWare磁盘读写提速

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VMWare不生成vmem文件的方法是在.vmx文件中增加两行：

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sched.mem.pshare.enable = "FALSE"
mainMem.useNamedFile = "FALSE"

refer to:
https://blog.csdn.net/shanzhizi/article/details/8293638
http://www.360doc.com/content/15/1120/11/73007_514517328.shtml
http://www.guyiren.com/archives/3210
https://blog.csdn.net/mnmnwq/article/details/79557305
https://blog.51cto.com/kitzk/553493
https://segmentfault.com/q/1010000002954977
https://bbs.kafan.cn/thread-1355085-1-1.html