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1–30 of 228
Discussion about computer systems performance and capacity management. You don't need to be a
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Stefan Möding
,
DrQ
2
7/14/21
PDQ 7.0.0 oddity
Hi Stefan, Yes, I discovered this bug myself while teaching the most recent GCAP class. Blush. It
unread,
PDQ 7.0.0 oddity
Hi Stefan, Yes, I discovered this bug myself while teaching the most recent GCAP class. Blush. It
7/14/21
DrQ
7/9/19
DSConf 2019: Applying The Universal Scalability Law to Distributed Systems (video)
When I originally developed the Universal Scalability Law (USL), it was in the context of tightly-
unread,
DSConf 2019: Applying The Universal Scalability Law to Distributed Systems (video)
When I originally developed the Universal Scalability Law (USL), it was in the context of tightly-
7/9/19
DrQ
, …
Vladimir Sitnikov
4
12/14/18
How to Emulate Web Traffic Using Standard Load Testing Tools
>I don't know how the "Target Throughput" mechanism in the Precise Throughput Timer
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How to Emulate Web Traffic Using Standard Load Testing Tools
>I don't know how the "Target Throughput" mechanism in the Precise Throughput Timer
12/14/18
DrQ
2
8/3/18
Guerrilla 2018 Classes Now Open
Quick reminder that Early Bird registration closes soon. Check the respective date by going to the
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Guerrilla 2018 Classes Now Open
Quick reminder that Early Bird registration closes soon. Check the respective date by going to the
8/3/18
DrQ
, …
Mohit Chawla
8
7/18/18
Chargeback in the Cloud - FREE online event, June 19th, 2018
Thanks for the update! On Wednesday, July 18, 2018, 'DrQ' via Guerrilla Capacity Planning
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Chargeback in the Cloud - FREE online event, June 19th, 2018
Thanks for the update! On Wednesday, July 18, 2018, 'DrQ' via Guerrilla Capacity Planning
7/18/18
DrQ
3/17/18
WTF is Modeling, Anyway?
A conversation with CAP management veteran, Boris Zibitsker, on his BEZnext channel. He's
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WTF is Modeling, Anyway?
A conversation with CAP management veteran, Boris Zibitsker, on his BEZnext channel. He's
3/17/18
DrQ
2/21/18
CPU Idle Is Not Like White Space
Latest rambling. Under pressure to consolidate resources (usually driven by management), especially
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CPU Idle Is Not Like White Space
Latest rambling. Under pressure to consolidate resources (usually driven by management), especially
2/21/18
Radu Brumariu
,
DrQ
10
12/4/17
serial to parallel circuit input
Something like this capability in PDQ wouldn't exactly go astray. :) On Thursday, November 23,
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serial to parallel circuit input
Something like this capability in PDQ wouldn't exactly go astray. :) On Thursday, November 23,
12/4/17
Radu Brumariu
,
DrQ
21
11/28/17
Open or closed ?
Hi, looking through the book and examples, I can't find any allusions to a model that has a multi
unread,
Open or closed ?
Hi, looking through the book and examples, I can't find any allusions to a model that has a multi
11/28/17
benikenobi
, …
DrQ
27
11/8/17
Good talk about capacity planning
To tell you the truth (not that I haven't been), I have more often come across applications that
unread,
Good talk about capacity planning
To tell you the truth (not that I haven't been), I have more often come across applications that
11/8/17
DrQ
8/10/17
Guerrilla CaP Classes 2017
Two classic courses and a new one are being offered in September 2017 : Guerrilla Capacity Planning (
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Guerrilla CaP Classes 2017
Two classic courses and a new one are being offered in September 2017 : Guerrilla Capacity Planning (
8/10/17
DrQ
,
benikenobi
4
6/9/17
Crib Sheet for Emulating Web Traffic
Thanks very much for your detailed response. With the response plus the reading of the related blog
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Crib Sheet for Emulating Web Traffic
Thanks very much for your detailed response. With the response plus the reading of the related blog
6/9/17
Mohit Chawla
, …
Stefan Moeding
10
10/14/16
Improving USL results
Hi! On Monday, July 18, 2016 at 7:08:41 AM UTC+2, DrQ wrote: Here are the significance levels for the
unread,
Improving USL results
Hi! On Monday, July 18, 2016 at 7:08:41 AM UTC+2, DrQ wrote: Here are the significance levels for the
10/14/16
Mohit Chawla
7/25/16
Gaphorism by Goethe
Hello folks, This is from Goethe's maxims and reflections ... sounds like a gaphorism to me.
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Gaphorism by Goethe
Hello folks, This is from Goethe's maxims and reflections ... sounds like a gaphorism to me.
7/25/16
Mohit Chawla
, …
DrQ
13
6/17/16
Beginner's question about tomcat and USL
Thanks folks. On Jun 17, 2016 1:47 AM, "'DrQ' via Guerrilla Capacity Planning" <
unread,
Beginner's question about tomcat and USL
Thanks folks. On Jun 17, 2016 1:47 AM, "'DrQ' via Guerrilla Capacity Planning" <
6/17/16
DrQ
6/15/16
Intel's x86 CPU-in-a-CPU and Its Security Risks
BoingBoing.net "Recent Intel x86 processors implement a secret, powerful control mechanism that
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Intel's x86 CPU-in-a-CPU and Its Security Risks
BoingBoing.net "Recent Intel x86 processors implement a secret, powerful control mechanism that
6/15/16
DrQ
6/7/16
2016 GUERRILLA TRAINING SCHEDULE 2016
After a six month hiatus, Guerrilla training classes are back in business. Register online. Early-
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2016 GUERRILLA TRAINING SCHEDULE 2016
After a six month hiatus, Guerrilla training classes are back in business. Register online. Early-
6/7/16
benikenobi
, …
Scott Johnson
5
5/28/16
Statistics Control Process
Thanks for the references, I will have a look. I would prefer python-based info :) but I would have a
unread,
Statistics Control Process
Thanks for the references, I will have a look. I would prefer python-based info :) but I would have a
5/28/16
DrQ
, …
rml...@gmail.com
12
5/27/16
The Linux Scheduler: a Decade of Wasted Cores
I should've added that the interconnect could also be replaced with something more typical, like
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The Linux Scheduler: a Decade of Wasted Cores
I should've added that the interconnect could also be replaced with something more typical, like
5/27/16
hasan ceylan
, …
rml...@gmail.com
3
5/9/16
How would you use to predict growth using PDQ library?
These numbers make no sense. I assume that your time unit for the arrival rate is 1 second. Your
unread,
How would you use to predict growth using PDQ library?
These numbers make no sense. I assume that your time unit for the arrival rate is 1 second. Your
5/9/16
hasan ceylan
5/5/16
Is this group active?
I was curious if this group is still active? I asked some questions, not getting any response.
unread,
Is this group active?
I was curious if this group is still active? I asked some questions, not getting any response.
5/5/16
Baron Schwartz
, …
hasan ceylan
3
5/2/16
USL and response times, TCP, and R
I am also interested to see how to apply usl to response times. Is there a sample work done on this?
unread,
USL and response times, TCP, and R
I am also interested to see how to apply usl to response times. Is there a sample work done on this?
5/2/16
Vlad Mihalcea
, …
hasan ceylan
43
4/21/16
The throughput and response time equations
Was is this issue settled. I am facing with the same challenge. I can collect workload and throughput
unread,
The throughput and response time equations
Was is this issue settled. I am facing with the same challenge. I can collect workload and throughput
4/21/16
Uriel Carrasquilla
, …
hasan ceylan
22
4/19/16
RE: R package to analyze USL models
can somebody explain what "Scale Factor for normalization and Efficiency mean in this model? On
unread,
RE: R package to analyze USL models
can somebody explain what "Scale Factor for normalization and Efficiency mean in this model? On
4/19/16
Shanti Subramanyam (gmail)
4/6/16
Measuring scalability of multiple distributed applications in a "system"
Neil et al, I read with interest the Hadoop scalability paper - thanks for the work. As we all know
unread,
Measuring scalability of multiple distributed applications in a "system"
Neil et al, I read with interest the Hadoop scalability paper - thanks for the work. As we all know
4/6/16
Baron Schwartz
,
hasan ceylan
2
4/4/16
USL ->> MPP response time
Hi Mr. Schwartz, I read your books in github, very good. I am trying to create a model to predict
unread,
USL ->> MPP response time
Hi Mr. Schwartz, I read your books in github, very good. I am trying to create a model to predict
4/4/16
hasan ceylan
4/4/16
pdq with R shiny
has anybody implemented PDQ with R shiny package?
unread,
pdq with R shiny
has anybody implemented PDQ with R shiny package?
4/4/16
hasan ceylan
4/4/16
where can I get PDQ Library for R
I'm unable to connect to sourceforce site. Does anybody have any other site or is this package
unread,
where can I get PDQ Library for R
I'm unable to connect to sourceforce site. Does anybody have any other site or is this package
4/4/16
Paul Puglia
4
2/17/16
RE: PDQ Initial setup
I downloaded the latest version of Strawberry Perl and was able to get PDQ to compile and run the
unread,
RE: PDQ Initial setup
I downloaded the latest version of Strawberry Perl and was able to get PDQ to compile and run the
2/17/16
DrQ
, …
Alexander Podelko
17
1/14/16
Microservices?
see slide 77 of http://www.slideshare.net/adriancockcroft/innovation-and-architecture A Microservice
unread,
Microservices?
see slide 77 of http://www.slideshare.net/adriancockcroft/innovation-and-architecture A Microservice
1/14/16