2 )”why more memory makes things worse” - I’d be interested to see you argue that - it really isn’t true with big boxes. (but yes off heap is good) - we run 24 gig JVMs with 8g new gen and never see more than a second or so STW and that is rare (but we do have lot of -XX: options)
> On Jul 9, 2016, at 11:58 AM, daemeon reiydelle <daeme...@gmail.com> wrote: > > I saw this really useful post a few days ago. I found the organization and > presentation quite clear and helpful (I often struggle trying to do high > level comparisons of Hadoop and Cass). Thank you! > > If there was sections I would like to see your clear thoughts appear within, > it would be around: > (1) why networks need to be clean (the impact of "dirty"/erratic networks); > (2) the impact of java (off heap, stop the world garbage collection, why more > memory makes things worse; > (3) table design decisions (read mostly, write mostly, mixed read/write, etc.) > A really great writeup, thank you! > > > > > > > ....... > > Daemeon C.M. Reiydelle > USA (+1) 415.501.0198 > London (+44) (0) 20 8144 9872 > > On Fri, Jul 8, 2016 at 11:59 PM, Manuel Kiessling <kiessling.man...@gmail.com > <mailto:kiessling.man...@gmail.com>> wrote: > Yes, the joke's on me. It was a copy&paste error, and I've since posted the > correct URL (journeymonitor.com > <http://journeymonitor.com/>:4000/tutorials/2016/02/29/cassandra-inner-workings-and-how-this-relates-to-performance/). > > > Substantial feedback regarding the actual post still very much welcome. > > Regards, > Manuel > > Am 09.07.2016 um 03:32 schrieb daemeon reiydelle <daeme...@gmail.com > <mailto:daeme...@gmail.com>>: > >> Localhost is a special network address that never leaves the operating >> system. It only goes "half way" down the IP stack. Thanks for your efforts! >> >> >> ....... >> >> Daemeon C.M. Reiydelle >> USA (+1) 415.501.0198 <tel:%28%2B1%29%20415.501.0198> >> London (+44) (0) 20 8144 9872 <tel:%28%2B44%29%20%280%29%2020%208144%209872> >> >> On Fri, Jul 8, 2016 at 5:53 PM, Joaquin Alzola <joaquin.alz...@lebara.com >> <mailto:joaquin.alz...@lebara.com>> wrote: >> Hi Manuel >> >> >> >> I think localhost will not work for people on the internet. >> >> >> >> BR >> >> >> >> Joaquin >> >> >> >> From: kiessling.man...@gmail.com <mailto:kiessling.man...@gmail.com> >> [mailto:kiessling.man...@gmail.com <mailto:kiessling.man...@gmail.com>] On >> Behalf Of Manuel Kiessling >> Sent: 07 July 2016 14:12 >> To: user@cassandra.apache.org <mailto:user@cassandra.apache.org> >> Subject: Blog post on Cassandra's inner workings and performance - feedback >> welcome >> >> >> >> Hi all, >> >> I'm currently in the process of understanding the inner workings of >> Cassandra with regards to network and local storage mechanisms and >> operations. In order to do so, I've written a blog post about it which is >> now in a "first final" version. >> >> Any feedback, especially corrections regarding misunderstandings on my side, >> would be highly appreciated. The post really represents my very subjective >> view on how Cassandra works under the hood, which makes it prone to errors >> of course. >> >> You can access the current version at >> http://localhost:4000/tutorials/2016/02/29/cassandra-inner-workings-and-how-this-relates-to-performance/ >> >> <http://localhost:4000/tutorials/2016/02/29/cassandra-inner-workings-and-how-this-relates-to-performance/> >> >> >> Thanks, >> >> -- >> >> Manuel >> >> This email is confidential and may be subject to privilege. If you are not >> the intended recipient, please do not copy or disclose its content but >> contact the sender immediately upon receipt. >> >
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