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Linux Observability with BPF

193 pointsby dankohn1almost 6 years ago

4 comments

linsomniacalmost 6 years ago
As someone who has gone through the ipfwadm -&gt; ipchains -&gt; iptables history, I would generally be pretty meh about another firewalling change. But, I have high hopes that it&#x27;ll give me the ability to do reasonable traffic shaping in Linux.<p>I once set up a FreeBSD box to do shaping for an ISP&#x27;s entire DSL customer base, and it was a couple commands and worked brilliantly! By contrast, I&#x27;ve dabbled with Linux shaping for ~2 decades, and the best I&#x27;ve gotten is one recipe that works well for one limited use case. Maybe it&#x27;s just me, but I&#x27;ve never been able to make it do my bidding, despite several occasions sitting down and giving it the old college try.<p>For other kernel paths, I&#x27;m really interested in using it to monitor for file modifications in the way that inotify is not very good. And I often resort to strace to figure out low level what is going on, it might be really good for that too.<p>Looks like an interesting book!
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zapharalmost 6 years ago
I&#x27;ve been a fan of dtrace for a long time and so I&#x27;ve been meaning to learn BPF to get similar functionality native to the linux kernel. I may pick this book up.
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TwoNineFivealmost 6 years ago
It&#x27;s an advertisement for a book. Cilium is on there and that&#x27;s a name I associate with blogverts.<p>There are eleven exclamation marks on that page.<p>BPF is the new paradigm for synergistic application of strategic opportunities in the use of acronyms.
dustfingeralmost 6 years ago
Thanks for sharing Jessie! I am definitely going to order this book :-)<p>EDIT: Why did I get down voted? I am not affiliated with this book, the authors of the book, or the OP in anyway. It just so happens that I will find this book very useful, so I thanked the OP for sharing.<p>It is sad we live in a world where there is so much manipulation that we are suspicious of each other&#x27;s sincerity. I guess I understand where the downvoter was coming from :-(
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