System and method for dynamically analyzing and improving the performance of a network
First Claim
1. A method of operating an open file cache that maintains files open after their closing has been requested, each file being so maintained for an open file close delay Wd after its closing has been requested, the method comprising the steps of:
- periodically determining (1) a number Fo of open files, (2) a number Fi of idle files, (3) a number Fa of active files, and (4) a number Fia of files that have changed from idle to active during the most recent period; and
for the following cases of the set of numbers {Fo, Fi, Fa, Fia }, performing the corresponding steps as follows;
{0, 0, 0, 0};
setting the value of Wd to be a default value Wd0 ;
{>
0, 0, >
0, 0};
setting the value of Wd to be Wd 0 ;
2 Assignments
0 Petitions
Accused Products
Abstract
In a method and system for dynamically improving the performance of a server in a network, a tuning system monitors a workload of the server in real time, monitors a set of internal performance characteristics of the server in real time, and monitors a set of adjustable server parameters of the server in real time. The workload of the server may include the frequency and type of service requests received by the server from clients in the network. The internal server performance characteristics may include, for example, a data cache hit ratio of a data cache in the server. The set of server parameters may include, for example, the overall data cache size or the data cache geometry of the server. The tuning system periodically alters one or more of the set of adjustable server parameters as a function of the workload and internal performance characteristics of the server. Since the tuning system is continuously monitoring workload and performance characteristics of the server and altering the server parameters accordingly, the effectiveness of a given change in the server parameters is reflected in the next set of monitored workload and performance values.
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Citations
3 Claims
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1. A method of operating an open file cache that maintains files open after their closing has been requested, each file being so maintained for an open file close delay Wd after its closing has been requested, the method comprising the steps of:
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periodically determining (1) a number Fo of open files, (2) a number Fi of idle files, (3) a number Fa of active files, and (4) a number Fia of files that have changed from idle to active during the most recent period; and for the following cases of the set of numbers {Fo, Fi, Fa, Fia }, performing the corresponding steps as follows; {0, 0, 0, 0};
setting the value of Wd to be a default value Wd0 ;{>
0, 0, >
0, 0};
setting the value of Wd to be Wd 0 ; - View Dependent Claims (3)
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2. {>
- 0. >
0, >
0, 0};
if the set of numbers {Fo, Fi, Fa, Fia } has equaled {>
0, >
0, >
0, 0} for at least a first number of preceding periods, then increasing the value of Wd to be a random number greater than the current value of Wd and less than (5*Wd0), and if the value of Wd has been so increased for at least a second number of preceding periods, then setting the value of Wd to Wd0 ;{>
0, >
0, >
0, >
0};
if the value of Wd was not increased in the most recent interval, then increasing the value of Wd to be a random number greater than the current value of Wd and less than (5*Wd0); and{else};
leaving Wd at its current value.
- 0. >
Specification