Magento 2 Performance: Every Second Counts

On the web, every second counts. Studies have shown that a 1 second delay in load time can cost a mid-sized eCommerce company $2.5 million per year in lost revenue. Let’s look at what Magento 2 has done to improve performance and how we can take things a step further to ensure the Magento 2 sites we build and maintain are well designed, well written and very, very fast.

Presented at php[world] 2016.

Transcript

1. 2016 2016
2. @JoshuaSWarren #phpworld Magento 2 Performance: Every Second Counts
3. @JoshuaSWarren #phpworld About Me • PHP-Based Ecommerce Developer Since 1999 • Magento Developer Since 2008; Magento 2 Dev Since 2014 • Magento Master • Founder of Creatuity, Magento Enterprise Solution Partner
4. @JoshuaSWarren #phpworld Performance Matters
5. @JoshuaSWarren #phpworld 47% of consumers expect a page to load in 2 seconds
6. @JoshuaSWarren #phpworld 40% abandon a website that takes more than 3 seconds to load
7. @JoshuaSWarren #phpworld Each 1 second delay causes at least a 7% drop in conversions
8. @JoshuaSWarren #phpworld If a site sells $1,000 per day, a 1 second delay could cost $25,000/year
9. @JoshuaSWarren #phpworld If a site sells $100,000 a day, a 1 second delay can cost $2.5 million/year
10. @JoshuaSWarren #phpworld Improving the load time for mobile users by 1 second can increase conversion rates 27%
11. @JoshuaSWarren #phpworld Load time is money
12. @JoshuaSWarren #phpworld If a bug caused 40% of visitors to leave, should you fix it?
13. @JoshuaSWarren #phpworld Poor performance is a bug.
14. @JoshuaSWarren #phpworld And it’s a bug for developers to solve.
15. @JoshuaSWarren #phpworld Magento 2 Performance Out of the Box
20. @JoshuaSWarren #phpworld Given the budget, Magento 2 can scale to any level and remain very, very fast
21. @JoshuaSWarren #phpworld Complex customizations, if not handled properly, can slow any site down significantly
22. @JoshuaSWarren #phpworld Infrastructure Matters
23. @JoshuaSWarren #phpworld All the performance optimizations in the world can’t compensate for bad hardware
25. @JoshuaSWarren #phpworld Please don’t host your ecommerce site on $5/month discount hosting
26. @JoshuaSWarren #phpworld Ensure Your Environment is Well Configured • Utilize Redis for cache & session storage • If appropriate, split your web server and database onto separate servers • Run PHP 7
27. @JoshuaSWarren #phpworld Now that your infrastructure is optimized…
28. @JoshuaSWarren #phpworld Performance is a State of Mind
29. @JoshuaSWarren #phpworld There are thousands of ways to implement a feature
30. @JoshuaSWarren #phpworld Take the time to find the right way
31. @JoshuaSWarren #phpworld The Right Way • Provides the desired functionality • Minimizes technical debt and maintenance costs • Does not reduce or slow site performance
32. @JoshuaSWarren #phpworld Ivan’s Rules • Ivan Chepurnyi, Magento performance expert • https://ivanchepurnyi.github.io • Ivan has four rules that changed my (dev) life
33. @JoshuaSWarren #phpworld Ivan’s Rules • Minimize amount of I/O operations to bare minimum • Make I/O operations as lightweight as possible • Spend time on requirement analysis • Analyze the possible data impact
34. @JoshuaSWarren #phpworld In other words…
35. @JoshuaSWarren #phpworld Performance problems tend to stem from too much I/O or I/O that’s too slow
36. @JoshuaSWarren #phpworld In Magento 2, generally I/O = MySQL database operations
37. @JoshuaSWarren #phpworld Efficient MySQL Usage • Avoid full table scans, avoid temporary tables and avoid the join buffer • Multiple simple queries tend to be faster overall than one large, complex query • Think about the underlying database usage triggered by the code you write
38. @JoshuaSWarren #phpworld Don’t Be Afraid • Don’t be afraid to create new tables when needed • Creating a new table to contain the data you need can be faster than triggering complex queries and JOINs • Don’t be afraid to try something new - the core code doesn’t always use the fastest approach
39. @JoshuaSWarren #phpworld Don’t Be Afraid • Don’t fear MySQL. The more you learn about MySQL, query optimization and how MySQL executes queries, the better you will become at performance optimization
40. @JoshuaSWarren #phpworld But what if you didn’t write the code on a site that’s running slowly?
42. @JoshuaSWarren #phpworld Real World Examples
43. @JoshuaSWarren #phpworld Finding Performance Issues
44. @JoshuaSWarren #phpworld You’ll need a profiler…
46. @JoshuaSWarren #phpworld Code Profiler • No, not the late 90’s TV show • A tool to measure the performance of your PHP code, including the time it takes to run and the resources it consumes • There are a many options for profiling your code
47. @JoshuaSWarren #phpworld Profiling Options • xdebug • xhprof • blackfire.io • There are many options, but…
48. @JoshuaSWarren #phpworld Rifleman’s Creed This is my rifle. There are many like it, but this one is mine. Without me, my rifle is useless. Without my rifle, I am useless.
49. @JoshuaSWarren #phpworld Hunting For Slow Code…
50. @JoshuaSWarren #phpworld Profiler’s Creed This is my profiler. There are many like it, but this one is mine. Without me, my profiler is useless. Without my profiler, I am useless.
51. @JoshuaSWarren #phpworld Blackfire.io • I’ve chosen Blackfire.io as my profiler of choice • I recommend it, but these techniques will work with any profiler, some just make it easier than others • Blackfire provides substantially more than what I can show today, so today we’ll just focus on performance profiling
52. @JoshuaSWarren #phpworld What can Blackfire Do? • How about point you to a way to make a page 99% faster? • Before: • After:
53. @JoshuaSWarren #phpworld Let’s review the profiles in detail…
54. @JoshuaSWarren #phpworld Reviewing A Profile • Total load time is 4 minutes 57 seconds • One call makes up 4 minutes 54 seconds - PDOStatement:execute select main_table.*, ... from sales_flat_order_grid as main_table left join sales_order_custom on sales_order_custom.order_id = main_table.entity_id left join orderarchive as orderarchive_tbl on orderarchive_tbl.order_id = main_table.entity_id where (orderarchive_tbl.order_group_id is null or orderarchive_tbl.order_group_id = ?) order by created_at desc limit ?
55. @JoshuaSWarren #phpworld Reviewing A Profile • I/O - database I/O is our bottleneck • We’re breaking Ivan’s rules - lots of I/O, and it’s not lightweight • In this case, we discovered a simple solution - not only were there multiple LEFT JOINs, they were being performed with no indexes!
56. @JoshuaSWarren #phpworld Let’s review the ‘after’ profile now…
57. @JoshuaSWarren #phpworld Reviewing A Profile • Reduced the time needed for this SQL query from 4 minutes 54 seconds to 550 milliseconds.
58. @JoshuaSWarren #phpworld Adventures in Magento 2 profiling on conference wifi…
59. @JoshuaSWarren #phpworld Writing Fast Magento 2 Code
60. @JoshuaSWarren #phpworld Build a Culture & Process of Performance • Each new commit, pull request or build should trigger a profiling run of all key pages • Any significant decreases in performance should trigger a failed build alert
61. @JoshuaSWarren #phpworld Build a Culture & Process of Performance • Spend time talking about performance when designing solutions • Share your experience and the trends you notice with your teammates and other Magento developers
62. @JoshuaSWarren #phpworld Writing Fast Magento 2 Code • Avoid the database as much as possible • When database access is required, use simple, well-indexed queries • If you see a need to access the filesystem…
64. @JoshuaSWarren #phpworld When Slow I/O Can’t Be Avoided • Move it to a background or periodic process • Utilize as much caching as possible • Design it in such a way that it impacts as few sessions as possible • Major difference between slowing down every page view on a site versus slowing down every cart completion
65. @JoshuaSWarren #phpworld Test and profile multiple potential implementations.
66. @JoshuaSWarren #phpworld Advanced M2 Optimization • The following tips are thanks to Max Pronko - https:// www.maxpronko.com/ - @max_pronko • Based on Max’s real world experience as CTO of a merchant that uses Magento 2
67. @JoshuaSWarren #phpworld Advanced M2 Optimization • Disable unused core modules - for instance, if you don’t offer downloadable products, disable Magento_Downloadable • Disable reports and features you don’t use • Remove any blocks you aren’t using from your theme
68. @JoshuaSWarren #phpworld Advanced M2 Optimization • If your site only offers one language, disable inline translation • Move as many of your scripts as possible to load async
69. @JoshuaSWarren #phpworld Homework
70. @JoshuaSWarren #phpworld php[world] sessions • DCPHP User Group Meeting: PHP Performance Profiling Using Blackfire • Tonight, 7PM, Ash Grove B • Magento 2 Development Best Practices • Friday, 10AM, Ash Grove A
71. @JoshuaSWarren #phpworld Future Events • Meet Magento World - Online Conference in December - http://meet-magento.com/conference/meet-magento-world/ • Magento 2 Performance Training - January 18th-20th in Orlando with Ivan Chepurnyi - http://bit.ly/2eAo8cz • Magento Imagine 2017 - April 3rd-5th in Las Vegas - imagine.magento.com 

72. @JoshuaSWarren #phpworld Remember that performance is a state of mind
73. @JoshuaSWarren #phpworld Poor performance is a bug
74. @JoshuaSWarren #phpworld Go try a profiler on a Magento site, identify one performance problem and solve it
75. @JoshuaSWarren #phpworld Tweet at me @JoshuaSWarren with what the problem was and how you solved it. I bet it’s I/O related…
76. @JoshuaSWarren #phpworld Q&A