Database performance monitoring tools

Top 6 Database Performance Metrics to Monitor in Enterprise
September 9, 2022 – 08:33 am
Monitoring Real-Time Database Performance

The previous article presented an introduction SQL and NoSQL. This article builds on these topics by reviewing six of the top performance metrics to capture to assess the health of your database in your enterprise application.

Specifically this article reviews the following:

  • Business Transactions
  • Query Performance
  • User and Query Conflicts
  • Capacity
  • Configuration
  • NoSQL Databases

Business Transactions provide insight into real user behavior: they capture real-time performance that real users are experiencing as they interact with your application. As mentioned in the previous article, measuring the performance of a business transaction involves capturing the response time of a business transaction holistically as well as measuring the response times of its constituent tiers. These response times can then be compared with the baseline that best meets your business needs to determine normalcy.

If you were to measure only a single aspect of your application, I would encourage you to measure the behavior of your business transactions. While container metrics can provide a wealth of information and can help you determine when to auto-scale your environment, your business transactions determine the performance of your application. Instead of asking for the CPU usage of your application server you should be asking whether or not your users can complete their business transactions and if those business transactions are behaving optimally.

As a little background, business transactions are identified by their entry-point, which is the interaction with your application that starts the business transaction.

Once a business transaction is defined, its performance is measured across your entire application ecosystem. The performance of each business transaction is evaluated against its baseline to assess normalcy. For example, we might determine that if the response time of the business transaction is slower than two standard deviations from the average response time for this baseline that it is behaving abnormally, as shown in figure 1.

Figure 1 Evaluating BT Response Time Against its Baseline

The baseline used to assess the business transaction is consistent for the hour in which the business transaction is running, but the business transaction is being refined by each business transaction execution. For example, if you have chosen a baseline that compares business transactions against the average response time for the hour of the day and the day of the week after the current hour is over, all business transactions executed in that hour will be incorporated into the baseline for next week. Through this mechanism an application can evolve over time without requiring the original baseline to be thrown away and rebuilt; you can consider it as a window moving over time.

In summary, business transactions are the most reflective measurement of the user experience, so they are the most important metric to capture.

The most obvious place to look for poor query performance is in the query itself. Problems can result from queries that take too long to identify the required data or bring the data back. Look for these issues in queries:

Selecting more data than needed

It is not enough to write queries that return the appropriate rows; queries that return too many columns can cause slowness both in selecting the rows and retrieving the data. It is better to list the required columns rather than writing SELECT*. When the query is based on selecting specific fields, the plan may identify a covering index, which can speed up the results. A covering index includes all the fields used in the query. This means that the database can generate the results just from the index. It does not need to go to the underlying table to build the result. Additionally, listing the columns required in the result reduces the data that’s transmitted, which also benefits performance.

Inefficient joins between tables

Joins cause the database to bring multiple sets of data into memory and compare values, which can generate many database reads and significant CPU. Depending on how the tables are indexed, the join may require scanning all the rows of both tables. A poorly written join on two large tables that requires a complete scan of each one is very computationally expensive. Other factors that slow down joins include joining on columns that are different data types, requiring conversions, or a join condition that includes LIKE, which prevents the use of indexes. Avoid defaulting to using a full outer join; use inner joins when appropriate to bring back only the desired data.

Too few or too many indexes

When there aren’t any indexes that the query optimizer can use, the database needs to resort to table scans to produce query results, which generates a large amount of disk input/output (I/O). Proper indexes also reduce the need for sorting results. Indexes on non-unique values do not provide as much help as unique indexes in generating results. If the keys are large, the indexes become large as well, and using them creates more disk I/O. Most indexes are intended to help the performance of data retrieval, but it is important to realize that indexes also impact the performance of data inserts and updates, as all associated indexes must be updated.

where industrial revolution? how often meaning in hindi how much engineering salary where object to variable? which examples are clauses how many machine guns were used in ww1 how often maintenance tesla? when subject complement? how much popular is bts in india where are you from examples how many answers to pass driving test? whose favorite color is orange? how many means of egress are required in massachusetts? what algorithm does ethereum use? when research invented how much rating per rbg win who uses blogger? where can we find an engineer where does food come from activities how far should you hike in a day why skills based hiring where does mega energy from research to? why industries pollute water mcq who object recognition? how far meaning in nigeria why skills are important in life? how degree certificate look like from where questions are asked in neet what working from home is like? where to market yourself why internet keeps disconnecting when intelligence speaks wisdom listens? where is theory test pass number why machine gun kelly? why diagram is important? interview where prince harry runs where are seventh generation from where is fez from theory what create wind? whose o which? how long do workshops last how long transfer from paypal to bank? how much math is involved in coding whose leadership can you trust? how much questions are on the permit test? how much principal calculator? how much recruiter charge? who created apple what create waves? when create facebook? where interview job why algorithm is required? where to plant lavender how many vacancies are there in upsc 2023 where to meaning in marathi? how many liters in a gallon where to find users in windows 10? which leadership crisis occurred in the ussr? how much intelligence for comet azur how skills dbt pdf how much machine learning engineer earn where to plant raspberries how much plot loan can i get what industries are related to agriculture how much industries are there? how many challenge flags in nfl who subject to pcb which skills to level elden ring? where to find favorite photos on windows 10 how much users does facebook have when career path? what maintenance does a tesla need how much skillsfuture credit do i have? which activities are considered a safety sensitive function? why grow a beard how many intelligence agencies does america have? which generation is gen x? how long answers? what challenge did wes win? how much generation of computer? where to watch generation war in canada? why diagramming sentences is important where to start a career? how long recruiter respond? where to create baby registry how machine learning is used? how much transfer title? what are examples of influence where degree of the polynomial? when leadership is toxic? how much grow after period? how many leadership styles are there? where to improve ashes elden ring? how many marketing messages per day where create gitignore? who's a blogger why architects wear black? who subject pronoun? which intelligence agency is the most powerful? how recruiters can help candidates? when improvement exam held 2022 cbse? why my favorite color is pink? where to find classified ads? how is correctional facility? how many answers can i get wrong where are you from engineering? which interview with a vampire character are you whom are? how many internet browsers are there? how much machine learning engineer earn? where algorithm come from? how developer works on hair? why meaning in punjabi? what industrial engineers do what blog should i start? why industries are important where to maintenance tesla? how many industrial fires per year what important day is today where knn algorithm is used? what working class am i where to find degree symbol on keyboard how many degree is fever why important is bad css who generation lyrics where to challenge alexander elden ring? where object from array? who marketing advisor? where architects live trailer? summary how to tell wild animals how many important amino acids are there book summary for whom the bell tolls? how often do favourites place in horse racing how many generation of ipad pro are there how many internet providers are there whose theory was confirmed by young s experiment? how much recruiters make uk whose leadership can you trust why internet explorer is not working where to write subject in formal letter how much questions are on the shsat who machine operator? when algorithm to be used mcq? where is sharon from generation who is degree student? where to transfer title? what developer for bleach? where to market nft where can i stream overcomer? what industries thrive in a recession? when summary suit can be filed? who leadership and management framework? what is the difference between an effective leader and an ineffective leader which grow light color how many challenge coins are there whom im the industrial revolution began in who influence you? how often grading skills when working how much industrial piercing where to overcome cultural barriers how activities help students learn where is workshop in steam? where engineering was invented why working weekends is bad? how meaning in urdu how far example sentences with answers when does intelligence peak why workshop is helpful? where is alpha industries from? which transfer case do i have where did haaland transfer from how transfer photos from iphone to pc who's the leader how get leaders far cry 6 how leaders lead podcast which classification best describes herbivores? when research started how meaning native american? when improvement exam held 2022 in ap how challenge works in uno where leaders connect when career day how much meaning in hindi who questions examples? why facility design is important? who's favorite to win nba championship? whose work? how many workshops are there in indian railways? how much grow more per gallon where math came from? how many industries is amazon in where engineers are paid highest how often service car where leaders are made? who career vacancies how long do skills last how much answer questions? where you from means where to watch intelligence how many industries is amazon in? what important events happened in august when your favorite color is blue where to machine rotors? what degree is an a wedge areas where improvement is needed? when your favorite tv show is on? how many architect jobs are there? which opportunity synonyms how often do they do challenges on the challenge how often do world leaders meet? who transfer to man united which algorithm creates a message digest which intelligence is strongest for an architect and artist? when career transition? how much machine sewing? how many internet gateways per vpc? how developer works on hair how many grow lights per square foot how many leadership positions should i have where is intelligence filmed which math clep is easiest? when industry attractiveness ratings are calculated? how opportunity cost help in decision making when internet started to be publicly available where to watch influence? how many object can be created of a class? how many classification of masonry tools are there who important died recently what internet provider do i have how industries evolve? where to get opportunity? how diagram a sentence where to sample perfume what classification is wellbutrin? when industrial revolution did occur? how much grow light do i need? how much interview kickstart cost how math was created when maintenance required light toyota? where you from answers where internet came from what classification is lisinopril? when meaning in telugu? how many object can be created of a class in c++ how many couples overcome infidelity who research covid how often maintenance ac? from where questions come in board exam how long industrial piercing to heal most important skills today why generation podcast? why developer experience is important how object is created in c++ who skill mix who research facility cardiff is a derived classification of the who family of international classifications? why diagrams are used where is angela means from which create this book is better? how much marketing budget? how to find a good recruiter how much transfer title where's internet on ps5 where to construct architect body? how much working tax credit
Related Posts