Viewing profile — xakahnx

My company provides me a work phone with a separate phone number. This is where I get pages and urgent or intentionally disruptive calls/messages

Have you tried calling people on the phone? This is the remote-work equivalent of tapping someone on the shoulder. It's equally helpful for companies that have multiple offices whe…

HN gets comment threads every month or so with "FAANG engineers do in fact make >500k annually". I see commenters doubt this every time, but it's true!

Adding to the speculation here, I'm willing to bet some component of their issue is not entirely technical. Regardless of the underlying cause (PKI was mentioned), for downtime to …

I find the same failed incentive scheme in industry. When a company gets big enough (tens of thousands of employees), taking risks to achieve something new and interesting doesn't …

The general attitude here reminds a bit of the following post from the architect of the Varnish proxy. I think the attitude comes down to the fact that modern kernels and in genera…

So much to relate to in this article. If I'm cycling through stackoverflow for answers, it's because I've convinced myself I'm in over my head. Depending on the day this is either …

It brings interesting trade-offs for program design. You can write the code one way which may be 10x faster but harder to reason about, or another way which is more straightforward…

The bulk of this article is more about creating your own programming language to solve a particular problem or set of problems. Less about choosing between general purpose programm…

One of the consequences of TCP being implemented in the Linux kernel is that companies were implicitly motivated to open source any performance or efficiency improvements to their …

Good point. I was picturing some gather/scatter over strings which are not in adjacent memory (maybe a generous interpretation for my use-case). Concatenating small strings into nd…

I like string processing libraries that implement a multi-document feature like the one mentioned here. There's always some efficiency to be gained- maybe the public API has a lot …

Cool! I looked up more info on this and ended up here, http://www.brendangregg.com/blog/2017-05-04/the-pmcs-of-ec2.... But I only skimmed this and I don't see that it mentions abou…

Any idea why this is? I'm even more curious since you've singled out "cloud VMs" from all VMs.

This is still a disaster with hyperthreading where you can have two threads contending for a lock on the same physical core. Even if your thread won't be scheduled off the core I d…

Most performance problems are measured as some function of the hardware resources (CPU usage, throughput, disk iops, network latency, ...). How do you find out what application or …

More than just broadcasts as we think of them in networked systems, it requires serialized/transactional broadcasts. Network distributed systems also have problems with ordering wh…

Keeping the directory coherent is the difficult part when translating directory-based cache coherence protocols to other distributed systems problems. The directory is like an orac…

Also interested in this protection. How does it detect this situation and what does it do when something is detected? Did you notice when it was accidentally removed that your moni…