Re: Blog post on Cassandra's inner workings and performance - feedback welcome

[Graham Sanderson]

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  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  > wrote:
> Yes, the joke's on me. It was a copy error, and I've since posted the 
> correct URL (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  >:
> 
>> 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 
>> London (+44) (0) 20 8144 9872 
>> 
>> On Fri, Jul 8, 2016 at 5:53 PM, Joaquin Alzola > > 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 ] On 
>> Behalf Of Manuel Kiessling
>> Sent: 07 July 2016 14:12
>> To: 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/
>>  
>> 
>>  
>> 
>> 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.
>> 
> 



smime.p7s
Description: S/MIME cryptographic signature

Re: Blog post on Cassandra's inner workings and performance - feedback welcome

[daemeon reiydelle]

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. ReiydelleUSA (+1) 415.501.0198London (+44) (0) 20 8144 9872*

On Fri, Jul 8, 2016 at 11:59 PM, Manuel Kiessling <
kiessling.man...@gmail.com> wrote:

> Yes, the joke's on me. It was a copy error, and I've since posted
> the correct URL (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 :
>
> 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. ReiydelleUSA (+1) 415.501.0198
> <%28%2B1%29%20415.501.0198>London (+44) (0) 20 8144 9872
> <%28%2B44%29%20%280%29%2020%208144%209872>*
>
> On Fri, Jul 8, 2016 at 5:53 PM, Joaquin Alzola 
> 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] *On
>> Behalf Of *Manuel Kiessling
>> *Sent:* 07 July 2016 14:12
>> *To:* 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/
>>
>>
>>
>> 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.
>>
>
>

Re: Blog post on Cassandra's inner workings and performance - feedback welcome

[Manuel Kiessling]

Yes, the joke's on me. It was a copy error, and I've since posted the 
correct URL 
(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 02:53 schrieb Joaquin Alzola :
> 
> 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] On 
> Behalf Of Manuel Kiessling
> Sent: 07 July 2016 14:12
> To: 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/
>  
> 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.

Re: Blog post on Cassandra's inner workings and performance - feedback welcome

[Manuel Kiessling]

Yes, the joke's on me. It was a copy error, and I've since posted the 
correct URL 
(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 :
> 
> 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
> London (+44) (0) 20 8144 9872
> 
>> On Fri, Jul 8, 2016 at 5:53 PM, Joaquin Alzola  
>> 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] On 
>> Behalf Of Manuel Kiessling
>> Sent: 07 July 2016 14:12
>> To: 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/
>> 
>>  
>> 
>> 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.
> 

Re: Blog post on Cassandra's inner workings and performance - feedback welcome

[daemeon reiydelle]

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. ReiydelleUSA (+1) 415.501.0198London (+44) (0) 20 8144 9872*

On Fri, Jul 8, 2016 at 5:53 PM, Joaquin Alzola 
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] *On
> Behalf Of *Manuel Kiessling
> *Sent:* 07 July 2016 14:12
> *To:* 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/
>
>
>
> 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.
>

RE: Blog post on Cassandra's inner workings and performance - feedback welcome

[Joaquin Alzola]

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] On Behalf 
Of Manuel Kiessling
Sent: 07 July 2016 14:12
To: 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/

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.

Re: Blog post on Cassandra's inner workings and performance - feedback welcome

[Manuel Kiessling]

Awfully sorry, here is the correct URI to the blog post:
http://journeymonitor.com:4000/tutorials/2016/02/29/cassandra-inner-workings-and-how-this-relates-to-performance/

Regards,
Manuel


On Thu, Jul 7, 2016 at 3:11 PM, Manuel Kiessling 
wrote:

> 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/
>
> Thanks,
> --
>  Manuel
>
>


-- 
 Manuel

Re: Blog post on Cassandra's inner workings and performance - feedback welcome

[Rakesh Kumar]

http://localhost:4000/tutorials/2016/02/29/cassandra-inner-workings-and-how-this-relates-to-performance/

This is not a valid address.

On Thu, Jul 7, 2016 at 9:11 AM, Manuel Kiessling  wrote:
> 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/
>
> Thanks,
> --
>  Manuel
>

Re: Blog post on Cassandra's inner workings and performance - feedback welcome

[Steven Choo]

Hi Manuel,

Nice initiative, but I think you posted a link to your local machine.

Best regards,


Steven Choo





ste...@humanswitch.io
www.humanswitch.io

www.iqnomy.com

Office:

HumanSwitch
Bijsterveldenlaan 5
5045 ZZ Tilburg
Netherlands

0031-(0)13-303 11 60

On Thu, Jul 7, 2016 at 3:11 PM, Manuel Kiessling 
wrote:

> 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/
>
> Thanks,
> --
>  Manuel
>
>