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Version 5.1.3 Based on the Byte Magazine Unix Benchmark
Multi-CPU version Version 5 revisions by Ian Smith,
Sunnyvale, CA, USA
January 13,201 1 johantheghost at yahoo period com
1 x Dhrystone 2 using registervariables 1 2 3 4 5 6 7 8 9 10
1 x Double-Precision Whetstone 1 2 3 4 5 6 7 8 9 10
1 x Execl Throughput 1
in developing network applications, department-level applications, and embedded application software. At the same time, with the world-class 24x7 service support of Oracle, the customer can achieve higher MySQL performance, cross-platform flexibility and improve management.
• The first MySQL on Windows Online Forum will describe:1. Why MySQL on Windows is welcomed by enterprise users and independent embedded software vendors.2. Why is MySQL very suitable for the Windows environment? What kind o
PHP Get remote Files
if (! ( $contents =file_get_contents (' HTTP://FINANCE.YAHOO.COM/D/QUOTES.CSV?S=AMZNAMP;E=.CSVAMP;F=SLLDLTLCLOHGV ')) {
Die (' fail to open Yahoo ');
};
Echo $contents;
Why the average refresh of 3-4 is only one success, the other will appear a warning, prompting HTTP request failed!
------Solution--------------------
C + + code
Bart Friederichs 16-apr-2012 12:17file_get_contents can do-a POST, create a context for that first: $opts = Array (' http ' = Gt Array
of dr6000 becomes more powerful, which is the best example of software and hardware integration. In the past few years, Dell has acquired a series of data protection software vendors, making it more autonomous and easy to provide comprehensive data protection solutions.
Makeup for mergers and acquisitions
In the field of data protection, providing overall solutions has always been Dell's goal and one of its advantages. However, before the acquisition of a series of storage software vendors, in
Manager.Kafka BenchmarkA core feature of Kafka is the high throughput rate, so the test in this paper is focused on the throughput rate of Kafka.The test in this paper uses 6 virtual machines with red Hat 6.6 installed, 3 as broker, and 3 as producer or consumer. Each virtual machine is configured as follows
Cpu:8 Vcpus, Intel (R) Xeon (r) CPU e5-2680 v2 @ 2.80ghz,2 sockets,4 cores per socket,1 Th
Occasionally saw Ali middleware Dubbo performance test Report, I think this performance test report to people do not understand the performance test performance testing, I think this report will bring the public ditch, so, want to write this article, do a little science.First, the main problems in this test report are as follows:1) are all averages. To be honest, the average is very unreliable.2) The response time is not pegged to the throughput tps/q
Broadband routers are still quite common. So I have studied the various parameters of the Broadband Router. I will share them with you here and hope they will be useful to you. Throughput) indicates the amount of data that the router can process per second. For example, the router works like a post office package business. The Post Office sends parcels to the post office to send the items, senders, recipients, and other information to the post office.
How do I choose the number oftopics/partitions in a Kafka cluster?
How to select the number of topics/partitions for a Kafka cluster.
This is a common question asked by many Kafka users. The goal of this post is to explain a few important determining factors andprovide a few simple formulas.
This is a problem that many Kafka users often ask. The purpose of this paper is to introduce some important decision factors related to this problem, and to provide some simple calculation formulas. More par
few years studying the AMQP protocol, a wired protocol in which the financial industry tried to standardize enterprise messaging, wrote reference implementations for it and participated in several large-scale messaging-based projects, and eventually realized that using classic clients/ There is a problem with the method of the server model's Intelligent Messaging Server (proxy) and the dumb messaging client.
Our primary concern is performance: if there is a server in the middle, each message mu
load reaches QPS", so you need to control the load of 20QPS to send requests to the blog home page.One way to do this is to gradually adjust the number of thread calculations in the test plan and add a timer to the sampler (Sampler) to keep the HTTP sampler's request for QPS at around 20. However, this method is time consuming and requires several attempts to achieve, and the other method is to control the QPS completely by setting a timer, and once the response time of the sampler changes (the
network performance measurement, and then discuss how to test network performance in different situations based on the use of the netperf tool.Network Performance Test overview five network performance measurement indicators
The following are the five indicators used to measure network performance:
Availability)
Response time)
Network utilization)
Network throughput)
Network bandwidth capacity)
1. Availability
The first step to test network pe
Source: http://www.hellodb.net/2011/06/fusionio-performance.html
Test environment: Dell r510, 2 x e5620, 24g, fusion-io iodrive 320g MLC
Test Tool: RedHat Linux 5.3, Oracle Orion 11
Test 1: 8 K random read with an iops of more than 5 W and a throughput of more than 400 m. When the response time reaches 4 W, the inflection point (more than 1 ms) appears and rapidly increases to the maximum value of 9.5 Ms.
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response time is calculated separately and not computed from each other. 9, it is also known that, in the case of concurrent volume remains unchanged, there are several ways to improve TPS. A, increase the number of thread pools (ingress) B, reduce the time per vehicle entry (that is, increase the processing efficiency of individual threads) 10, see the difference between these 2 from the definition of TPS and response time. TPS = the number of times each transaction passes, fails, and stop
some basic concepts and methods of network performance measurement, and then discuss how to test network performance in different situations based on the use of the netperf tool.
Network Performance Test Overview
Five indicators for network performance measurement
The following are the five indicators used to measure network performance:
Availability)
Response time)
Network Utilization)
Network throughput)
Network bandwidth
if we don't know what system performance is, we won't be able to locate it. I've seen a lot of friends who think it's easy, but in fact they don't have a more systematic approach, so here I want to tell you how to position the performance in a systematic way. Overall, system performance is two things:
Throughput throughput. That is, the number of requests that can be processed per second, the numb
Kafka of Log CollectionHttp://www.jianshu.com/p/f78b773ddde5First, IntroductionKafka is a distributed, publish/subscribe-based messaging system. The main design objectives are as follows:
Provides message persistence in a time-complexity O (1) manner, guaranteeing constant-time complexity of access performance even for terabytes or more data
High throughput rates. Capable of single-machine support for transmission of messages up to 100K p
tool for Yahoo. It supports the following functions
Manage multiple clusters
easy to view cluster status
Execute preferred replica election
Bulk build and execute partition allocation scheme for multiple topic
Create topic
Delete topic (supports only 0.8.2 and above, and requires delete.topic.enable set to True"
Add partition
topic
supports adding and viewing Logkafka
After installing Kafka Manager, it is convenient to add cl
, -1, 40000);pperegrina 21-Dec-2011 11:30For those having this problem when trying to get_file_contents(url):Warning: file_get_contents(url): failed to open stream: HTTP request failed! in xx on line yyIf you are behind a SonicWall firewall, read this:https://bugs.php.net/bug.php?id=40197(this little line: uncheck a box in the internal settings of the firewall labled "Enforce Host Tag Search with for CFS")Apparently by default
PHP Get remote Files
if (! ( $contents =file_get_contents (' HTTP://FINANCE.YAHOO.COM/D/QUOTES.CSV?S=AMZNAMP;E=.CSVAMP;F=SLLDLTLCLOHGV ')) {
Die (' fail to open Yahoo ');
};
Echo $contents;
Why the average refresh of 3-4 is only one success, the other will appear a warning, prompting HTTP request failed!
------Solution--------------------
C + + code
Bart Friederichs 16-apr-2012 12:17file_get_contents can do-a POST, create a context for that first: $opts = Array (' http ' = Gt Array
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