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Linux Shell

我的母亲

今天,我巧遇短视频采访,还需要抓题,因为我是这群工友中唯一一个上过高中的,两个女孩子就选中了我,我有幸抓到了“我的母亲”这个标题,重温母亲的回忆,让我思绪万千,母亲走了三十多年了,就埋在村头的老坟地里。她的模样,她的一举一动,就跟在眼前似的。母亲啊,一辈子就没闲过,天不亮就起,摸着黑才歇,家里家外,操不完的心,穿的永远是洗得发白,补了又补的衣裳。她心善,能容人,跟邻里没红过脸,有啥好东西,总先紧着别人。

23 Kvm Storage Performance and Cache Settings on Red Hat Enterprise Linux 62

Almost one year ago, I checked how different cache settings affected KVM storage subsystem performance. Results were very clear: to obtain good I/O speed, you had to use the write-back or none cache policies, avoiding the write-through one. However, as the write-back policy intrinsic comported some data-loss risk, the safer bullet was to not use any host-based cache (the “nocache” KVM option).

But what is the situation now? With the newly released RHEL 6.2 point release, I am going to check if something has changed. But let me first recap the whole KVM caching question.

国内到国际的各种ISP线路

写在开头

我近期正在研究国际ISP线路,偶然发现了这篇文章。作者非常用心地科普了国内外的ISP知识,内容极具学习价值。我想将其保存在博客中作为备份,在此由衷感谢各位作者的分享。