Performance issues with large website [closed]

1. How do you troubleshoot website slowness?
2. What causes slow loading of Web pages?
3. What are the three most probable causes of performance issues in production?
4. What are the common performance problems faced by users?
5. How do you troubleshoot server performance issues?
6. How can I test my website performance?
7. What is the slowest loading website?
8. What are three ways to reduce page load time?
9. Why is my browser not loading pages correctly?
10. How do you resolve production issues?
11. How do you investigate performance issues?
12. Which of the following may be the reasons for fake performance issues being detected?

How do you troubleshoot website slowness?

Slow Website Troubleshooting Checklist

1. Clean up your website's code. Remove unnecessary elements such as white spaces, comments and inline spacing.
2. Check your PHP version. ...
3. MySQL Server: Find slow-executing queries. ...
4. Analyze slow website content. ...
5. Speed up your site performance. ...
6. Check your content.

What causes slow loading of Web pages?

A large volume of unoptimized images is usually the most common reason behind website slowness. High-resolution images can consume lots of bandwidth while loading. Uploading larger sized images and then scaling them down can unnecessarily increase the size of your web page – causing your website to load slowly.

What are the three most probable causes of performance issues in production?

Reasons for Performance Issues in Production Systems

• Lack of Local Performance Testing. ...
• Third-Party Systems May Behave in Unexpected Ways. ...
• Unexpected Network Delays. ...
• Lack of Logs to Measure the System's Performance. ...
• Data Growth in Database Systems Will Slow Down Your System.

What are the common performance problems faced by users?

Here are seven of the most common web application performance roadblocks and how to fix them:

• DNS issues and network connectivity.
• Slow servers and loading time.
• Poorly written code.
• Lack of load balancing.
• Traffic spikes.
• Specific HTML title tags.
• Failing to optimize bandwidth Usage.

How do you troubleshoot server performance issues?

Troubleshoot server performance problems

1. Check the server type and ensure that it has the necessary CPU and RAM resources to meet your application requirements and user load.
2. Check if your application is using a cache. ...
3. Check if there are any cron jobs running on the server and consuming resources.

How can I test my website performance?

Best Website Speed Test Tools in 2019

1. Pingdom.
2. Google PageSpeed Insights.
3. Google Mobile Website Speed Testing Tool.
4. Google Analytics Site Speed.
5. WebPageTest.
6. GTMetrix.
7. KeyCDN Website Speed Test.
8. DareBoost.

What is the slowest loading website?

As with the UK test, Amazon was the top performer with 93 for its homepage and 92 for a product page. Amazon also clocked the fastest load time for its homepage with 2.75 seconds, followed by Dell (3.09 seconds) and Apple (4.79 seconds). Macy's homepage had the slowest load time with 8.58 seconds.

What are three ways to reduce page load time?

10 Tips for Decreasing Web Page Load Times

1. Check the Current Speed of the Website. ...
2. Optimize Your Images. ...
3. Don't Scale Down Images. ...
4. Compress and Optimize Your Content. ...
5. Put Stylesheet References at the Top. ...
6. Put Script References at the Bottom. ...
7. Place JavaScript and CSS in External Files. ...
8. Minimize HTTP Requests.

Why is my browser not loading pages correctly?

If the Web page loads normally, you most likely have a problem with your current browser. If the second browser cannot load the problematic site, check your antivirus or firewall settings. ... If this is the case, it may prevent all browsers from accessing content, causing Web pages to load incorrectly.

How do you resolve production issues?

7 steps to solve your operational problems

1. Identify problems. Problems can show up as temporary setbacks, wasted efforts and/or interruptions in production. ...
2. Describe the current situation. ...
3. Take temporary countermeasures on the spot. ...
4. Find the root cause. ...
5. Propose solutions. ...
6. Establish an action plan. ...
7. Check results.

How do you investigate performance issues?

Tips For Investigating Performance Issues

1. Find A Build Or Change That Introduced The Issue. A performance issue does not necessarily require intense profiling to arrive at the cause of the issue. ...
2. Use Release Builds Only. ...
3. Use The Same Machine. ...
4. Catch Issues Early. ...
5. Profile And Know Your Profiler. ...
6. Conclusion.

Which of the following may be the reasons for fake performance issues being detected?

Increased cache loading because of the improper size. Increased cache latency with a huge caching size. Spiky pattern in the performance testing response time, in case the cache size is not correct, causes continuous invalidation and reloading of the cached objects.