System resource component utilization

Patent metadata

Field	Value
Publication number	US-10102103-B2
Application number	US-201514937999-A
Country	US
Kind code	B2
Filing date	Nov 11, 2015
Priority date	Nov 11, 2015
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A computer implemented method including receiving a set of utilization metrics for a system comprising at least an average number of concurrent requests to the system and a maximum concurrency that the system is capable of supporting, providing a function that incorporates two curve segments, computing a utilization according to a ratio of the average concurrent requests to the function, and managing performance problems indicated by the utilization. A computer implemented method including receiving a set of response time metrics comprising at least an average response time, average concurrent requests, and a minimum interference response time, computing a current response ratio of the minimum interference response time and the average response time, computing a maximum response ratio corresponding to a maximum concurrency, determining the maximum concurrency is inaccurate by comparing the maximum response ratio and the current response ratio, and replacing the maximum concurrency.

First claim

What is claimed is:

1. A computer implemented method, comprising:
receiving, by one or more processors, a set of utilization metrics for a system comprising at least an average number of concurrent requests N to the system and a maximum concurrency c that the system is capable of supporting;
computing, by one or more processors, a tipping point p corresponding to the average number of concurrent requests N;
computing, by one or more processors, a utilization U according to a ratio of the average number of concurrent requests N to a function FixP D (N), where FixP D (N) is defined as:
Fix P D ( N )= c+f ( f ( N/p )) for N<p , and
Fix P D ( N )= N+ 1+ b*f ( p/N ) for N≥p,
where
b=c−p and f ( y )= y−b*y *(1− y )+0.5* b *( b− 1)* y *(1− y ) 2 ; and

adjusting, by one or more processors, the system, utilizing the utilization U.

2. The method of claim 1 , further comprising computing, by one or more processors, an extended harmonic number G(c) according to an equation G(c)=2*D{H [c+1] −1/(2*[c]+2.52)}+(1−2*D)*H d , wherein D is a distance between c and a nearest integer d, H d is a d th harmonic number, and [c] denotes a greatest integer function of c.

3. The method of claim 2 , wherein the tipping point p is computed according to an equation p=c−G(c+2)+G(3)+1.6/(c+7)−9.6/(c+47).

4. The method of claim 1 , wherein adjusting the system, utilizing the utilization U, comprises:
identifying, by one or more processors, components of the system that exhibit a predetermined utilization; and
adjusting, by one or more processors, the system to balance the utilization U across available components.

5. A computer program product for computing a system utilization, the computer program product comprising:
one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions, executable by a computer, comprising instructions to:
receive, by one or more processors, a set of utilization metrics for a system comprising at least an average number of concurrent requests N to the system and a maximum concurrency c that the system is capable of supporting;
compute, by one or more processors, a tipping point p corresponding to the average number of concurrent requests N;
compute, by one or more processors, a utilization U according to a ratio of the average number of concurrent requests N to a function FixP D (N), where FixP D (N) is defined as:
Fix P D ( N )= c+f ( f ( N/p )) for N<p , and
Fix P D ( N )= N+ 1+ b*f ( p/N ) for N≥p,
where
b=c−p and f ( y )= y−b*y *(1− y )+0.5* b *( b− 1)* y *(1− y ) 2 ; and

adjust, by one or more processors, the system, utilizing the utilization U.

6. The computer program product of claim 5 , further comprising program instructions to compute an extended harmonic number G(c) according to an equation G(c)=2*D{H [c+1] −½*[c]+2.52)}+(1−2*D)*H d , wherein D is a distance between c and a nearest integer d, H d is a d th harmonic number, and [c] denotes a greatest integer function of c.

7. The computer program product of claim 6 , wherein the tipping point p is computed according to an equation p=c−G(c+2)+G(3)+1.6/(c+7)−9.6/(c+47).

8. The computer program product of claim 5 , wherein program instructions to adjust the system, utilizing the utilization U, comprise instructions to:
identify, by one or more processors, components of the system that exhibit a predetermined utilization; and
adjust, by one or more processors, the system to balance the utilization U across available components.

9. A system, comprising one or more processors for:
receiving, by the one or more processors, a set of utilization metrics for the system comprising at least an average number of concurrent requests N to the system and a maximum concurrency c that the system is capable of supporting;
computing, by the one or more processors, a tipping point p corresponding to the average number of concurrent requests N;
computing, by the one or more processors, a utilization U according to a ratio of the average number of concurrent requests N to a function FixP D (N), where FixP D (N) is defined as:
Fix P D ( N )= c+f ( f ( N/p )) for N<p , and
Fix P D ( N )= N+ 1+ b*f ( p/N ) for N≥p,
where
b=c−p and f ( y )= y−b*y *(1− y )+0.5* b *( b− 1)* y *(1− y ) 2 ; and

adjusting, by the one or more processors, the system, utilizing the utilization U.

Assignees

• IBM

Inventors

• Mcnutt Bruce

Classifications

• G06F11/3452

  Performance evaluation by statistical analysis · CPC title

• G06F11/3409

  for performance assessment · CPC title

• G06F11/0754

  by exceeding limits · CPC title

• G06F11/3495 Primary

  for systems · CPC title

• G06F11/0706 Primary

  the processing taking place on a specific hardware platform or in a specific software environment · CPC title