Sorry to bother you all. It's a awesome job Mohamad. Could I ask you a question? What tool did you used to generate the "Ceph write diagram"? Zipkin/Blkin ? 1. Ceph write diagram: https://docs.google.com/drawings/d/1fFb-aI8NQq7RESV2OKzrte2KvaBWAh6X9TL7woAGAmo/edit?usp=sharing 2017-05-03 21:45 GMT+08:00 Mohamad Gebai <mgebai@xxxxxxxx>: > On 05/02/2017 08:49 PM, Mark Nelson wrote: >> >> On 05/02/2017 04:05 PM, Mohamad Gebai wrote: >>> >>> >>> I've done some benchmarking of LTTng in the past. On average, a kernel >>> tracepoint costs less than 100ns and a userspace one is around 150ns. It >>> also hits the disk to periodically flush the tracing buffers. The >>> overhead is definitely non negligeable. I'll write a how-to as there are >>> quite a few steps to get all of this running. >> >> >> Awesome job Mohamad! It'd be sweet if we could automate the tracing and >> geneation of plots like this. Some time I'd like to be able to include >> tracing like this during CBT benchmark runs. >> > Thanks Mark! I'll try to play with CBT and tracing automation, and I'll let > you know if I find anything interesting. > > > Mohamad > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
