#include #include #include #
include #include #include using namespace std;
const int size=500;
const int inf=0x3f3f3f3f;
Input list int n,m,s,d;
temporary variables int i,j,t;
Auxiliary vector vectorrescueteamnum;//do not think that the vector
(corresponding to multiple sessions)The second parameter indicates how many transactions are executed (Note: not how many transactions are executed concurrently, but the number of transactions executed concurrently). Generally, this value is set to 10000.The third parameter is used when testing the remote database. The value is the alias for the remote database connection configured in tnsnames. ora.
Orabm 2 10002 Concurrent executions of 1000 transactions
Orabm 10001, 2, 6, and 19 are used to
Tags: ROM data test Rules collection notebook SEM disk read-write providerA Linux server Performance View 1.1 CPU Performance View 1, view the number of physical CPUs:cat /proc/cpuinfo |grep "physical id"|sort|uniq|wc -l2. View the number of cores in each physical CPU:cat /proc/cpuinfo |grep "cpu cores"|wc -l3, the number of logical CPUs:cat /proc/cpuinfo |grep "processor"|wc -lNumber of physical CPUs * Number of cores = number of logical CPUs (in cas
Tag: Size description tin GitHub Ace alt return TPS overflow#problemMultiply large integers#Idea Description python support * * "infinite precision" integer, * * Generally do not consider the problem of integer overflow, and python A long integer class of type int and arbitrary precision can be transformed seamlessly, and cases that exceed the int range will be converted to a long type. For example: >>> 2899887676637907866*1788778992788348
Tags: statistics impact receive process blog End Agent Dynamic AtimeA Linux server Performance View 1.1 CPU Performance View 1, view the number of physical CPUs:cat /proc/cpuinfo |grep "physical id"|sort|uniq|wc -l2. View the number of cores in each physical CPU:cat /proc/cpuinfo |grep "cpu cores"|wc -l3, the number of logical CPUs:cat /proc/cpuinfo |grep "processor"|wc -lNumber of physical CPUs * Number of cores = number of logical CPUs (in case of H
In the past, a customer experienced a situation where sysbench was used for stress testing. during the test, a problem occurred. The following is the output of the customer: [1310 s] before threads: 600, tps: 217670, reads: 108710, writes: 1089, a customer experienced a situation where he used sysbench for stress testing, A phenomenon occurs during the test, as shown below:
The output result of the customer is as follows:
[1310s] threads: 600,
referred here: http://www.cnblogs.com/peida/archive/2012/12/28/2837345.htmlI/O is not frequent. Io is at a very low level, so I/O should not be the bottleneck of this performance test.
After reading vmstat and iostat, if they are not at a very high level, the next one should give priority to the network. Yes, there is also a netstat for Linux, Which is used differently from the first two, but is equally powerful, lists the details of all TCP connections on the application server. Normally, you
, the broad sense of concurrent user operations closer to the actual business environment. But the number of concurrent users in this article only refers to the narrow sense, because the broad sense is a combination of many narrow.Tps:transaction per Second, number of transactions/sec, Unit is transaction/sec.Trt:transaction Response time, transaction response times, the average transaction response time when TPS is stable, in seconds.Third, the load
LeetCode 21 Merge Two Sorted Lists (C, C ++, Java, Python), leetcodesortedProblem: Merge two sorted linked lists and return it as a new list. The new list shoshould be made by splicing together the nodes of the first two lists.Solution: two ordered linked lists. Each time the smallest element in the header is taken, this element is removed from the original linked list and cyclicallyGiven two ordered linked lists, the linked list must be merged into an ordered linked list, and no additional spac
Problem:Merge sorted linked lists and return it as a new list. The new list should is made by splicing together the nodes of the first of the lists.Solution:two ordered lists, each taking the smallest element of the head, and then remove the element from the original linked list, loop in turnMain topic:given two ordered linked lists, the linked list is required to be merged into an ordered list, and no additional space can be usedJava source Code (344MS):/** * Definition for singly-linked list.
GLOBAL STATUS like ' Uptime ';tps= (Com_commit + com_rollback)/uptimeThe QPS and TPS values must be monitored in real time, and if you are close to the test peaks of the architecture, may God be with youRead/writes RatioQcache_hits = SHOW GLOBAL STATUS like ' qcache_hits ';Com_select = SHOW GLOBAL STATUS like ' com_select ';Com_insert = SHOW GLOBAL STATUS like ' Com_insert ';Com_update = SHOW GLOBAL STATUS
Whether a single-chain table is intersection (Java version), single-chain javaQuestion: A single-chain table L1 and L2 with two leading nodes determines if they are intersecting (whether they have the same nodes)Solution:L1 and L2 are empty.Because a single-chain table may have loops, we can discuss them in three cases.1. There is no ring in L1 and L2, so you can
Directory
One, get the total number of processes under MySQL user
Second, host performance status
Third, CPU utilization
Four, disk IO volume
Five, swap volume [memory]
VI, Database performance status
Seven, QueryLog
Viii. extended-status instructions for mysqladmin view MySQL status values
Nine, open source monitoring software
One, get the total number of processes under MySQL user ps-ef|awk ' {print$1} ' |grep ' MySQL ' | grep-v "grep" |wc-1 two, h
Topology Analysis of the junos isis RegionTypical ISIS topology types:Refer to AREA 49.0001 R1 (L1 only) and R2 (L1/L2). R3 (L2 only) needs to configure the same region address, while R3 and R4 (L2) configure IP addresses in different regions for the adjacent vro.There are three types of vrol1 roles: L1: similar to the full-ended area L1/
ADSL2/2 + system, in this way, the data rate parameter of the modulation layer can be modified without changing any parameters of the frame layer. Because no parameters affect the frame layer, the user terminal keeps frame synchronization, the system will not be restarted or have error codes, saving energy. The first-generation ADSL Transceiver always works in the maximum power mode, even if there is no ADSL service on the line. The maximum power mode makes the ADSL device consume extremely muc
and ADSL2 + systems, in this way, the data rate parameter of the modulation layer can be modified without changing any parameters of the frame layer. Because no parameters affect the frame layer, the user terminal keeps frame synchronization, the system will not be restarted or have an error code.
Energy-saving features. the first-generation ADSL Transceiver always works in the maximum power mode, even if there is no ADSL service on the line. the maximum power mode makes the ADSL device consume
In traditional Data Center Server area network design, the L2 network is usually limited to the network convergence layer. By configuring VLANs for cross-aggregation switches, the L2 network can be extended to multiple access switches. This solution provides flexible scalability for the server network access layer. In recent years, high-availability cluster technology and dynamic migration technology of vir
0.42017522 0.41936156 0.39760831 0.38769987 0.3667541
0.33998333 0.33803962 0.32367439 0.3168962]
Roc_curve () function
Analyze the Roc_curve () code to see how these three values are calculated, in fact, is the general AUC calculation process.
The first is the _binary_clf_curve () function:
FPS, TPS, thresholds = _binary_clf_curve (
y_true, Y_score, Pos_label=pos_label, Sample_weight=sample_weight)
FPS and
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