DML Insert operations consumes Apex CPU time
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DML Insert operations consumes Apex CPU time

Apex

Last updated 2 days ago ·Reference W-4940480 ·Reported By 177 users

Scheduled - Summer '20

Summary
Our current logical design of DML insert operations are not efficient and can unreasonably imposes the Apex CPU time limit on customers, especially for DML operations on a large number of records having a large number of columns.

Repro
1. Creates a custom object with 120 custom fields as follows:

Object name: MyObject

40 checkbox fields from MyCheckboxField0 to MyCheckboxField39

40 number fields from MyNumberField0 to MyNumberField39

40 Text fields from MyTextField0 to MyTextField39


2. Create the followng Apex class.

public class MyObjectSetup {
private List<SObject> objs;

public MyObjectSetup() {
}

public void init(Integer recordSize) {
String prefix = 'o';
objs = new List<MyObject__c>();
for(Integer i = 0; i < recordSize; i++) {
MyObject__c obj = new MyObject__c(name = prefix + i);
objs.add(obj);
for(Integer j = 0; j < 40; j++) {
obj.put('MyCheckboxField' + j + '__c', true);
obj.put('MyNumberField' + j + '__c', j);
obj.put('MyTextField' + j + '__c', 'mytext' + j);
}
}
}

private void insertRecords() {
insert objs;
}

public static void run(Integer size) {
MyObjectSetup o = new MyObjectSetup();
o.init(size);

Integer startCpuTime = Limits.getCpuTime();
o.insertRecords();
System.debug('Inserted ' + size + ' records: ' + (Limits.getCpuTime() - startCpuTime) + '(ms)');
}
}

3. Call the run() method with 5000 (5000 records, this is a half of the governor limit of 10K).

-----
MyObjectSetup.run(5000);
-----

And you'll see that much CPU time is consumed just on the insert operation.
In my test on my local box, inserting 5000 records used over 8 seconds CPU time.

Workaround
NA

Reported By (177)

Neil Gillam Steven Workman David Wood Christopher Sweet Chris Berry Sathish Kumar S R Sayali Jadhav Sue Bongiorno Abdelhamid Hazem Russell Laboe David Rodriguez Jose Miguel Carreño TOMAS SANTANA ORTIZ Sergio Caballero Alejo Daniel Martinez Pares Ángel Troya Fátima Pérez Enrique Prieto Jurado Rogelio Machuca Guerrero Luis de Lara Miguel Infantes Rafael Caballero Alfonso Serna Gilabert Chris Sangrey Roy Moore John Floria Chris Karpyszyn Kristine Cruz Dwayne Branthoover Maschal Malek Rohit Tatineni ION User John Hill Imanuel Eldin Fraser Waterfield Nirmal Kumar S Stephanie Powell Nikhil Gumte Ashok Kaki Shweta Deshmukh Anurag Joshi Amun Dhak Herbert Silva Oliveira Jeremy Bleichner Sagar Pratham USA Admin Jacob Rauchen Kate White Srividya Kesavan Karthik Kasala Luis Ibaceta Jon Guliker Prashant Pandey Vishal Saxena Evan Montigney Pawan Kumar Ramesh Koppula Dhruv Singh Mike Lockett Ramesh Dadi Aleksey Fink Nathan Holthaus Karsten Maass 和弥 吉田 Vijaya Kumar Basa Don Rockett Joseph Reale Floris Kater Karlijn Smits Ofri Heffetz Marie Niekamp Nils ​Yseboodt Gobius Dolhain Mathias Sand S G Steven Wilson Lauren Brink Siân Walker Miguel Angel Gonzalez Sharad Shailly Beth Bellon Shane Smalldon Gyorgyi Kovacs Csaba Szekacs Matt Hagey Dolores Pilitz Steven Babula Aniki Mirzaei Kirthi Mani Luigi Magni Shruti Suman Mishra Kyle Thornton Safal Kondawar Paul Kissick Aidan Harding Gary Breavington Jack Robertson Abhishek Rathi Rudy Ornelas Jitendra Zaa Eric Kintzer Michael Richmond Shareen Mullen Keir Bowden Zachary Lomax Jeff Cheng Srikanth Datla William Zhang Dinesh Yadav Christiaan Van Der Merwe Lars Olson Curt Drummond Monique Bouffard Colum Mooney Ryan Bestul Lewis Briffa Eunice Lee Bob Teplitsky Matthew Anderson Namrata Umbarkar Eric Schubert Ehsan Y Sai Kethu Sangita Gupta Paul Francis-Neun Matthias Greier Gunnar Einarsson Neelima Boppana Daniel Appleman Joshua Kendall Noris Pasic Yina Chun Karim Gabriel Alison Thomas Farhan Sheikh Ben Garside Louisa Barrett Charles Troster Taylor Kingsbury Daniel Ballinger Carl Tewell High Tekers Johnathan Tom Mohamad Al Daqa Elie Hassan Mike Keyzer Andrew Smith Abhimanyu Panditrao Elena Ushakova Brian Higgins Dhanraj S Nikam - NOT USING Dhanraj Nikam Rakesh Boddepalli Subhash Garhwal James Browne Dulguun Battsogt Stanislav Zarud Mike Watson Christopher Karpyszyn Matt Symes Kate Preston Ian Sheffield Erika Moate Jonny Power Cameron Goodman Dave Casper Torsten Engelmann Matthew Anderson Dmitry Merkis Nic Edwards Steve Kleniewski Roshan Guttikonda Brian Triplett David Frudd Bethani Boas James Hadfield Kevin Jones Lee Storey

Is it Fixed?

AP0 AP3 AP4 AP5 AP6 AP7 AP8 AP9 AP10 AP11 AP12 AP13 AP14 AP15 AP16 AP17 AP18 AP19 AP20 AP21 AP22 AP28 CS1 CS2 CS3 CS4 CS5 CS6 CS7 CS8 CS9 CS10 CS109 CS108 CS107 CS106 CS105 CS102 CS101 CS100 CS115 CS119 CS110 CS117 CS114 CS113 CS112 CS111 CS11 CS116 CS12 CS122 CS121 CS126 CS127 CS129 CS128 CS125 CS124 CS123 CS137 CS138 CS13 CS133 CS132 CS14 CS148 CS142 CS15 CS152 CS151 CS16 CS17 CS18 CS19 CS20 CS21 CS22 CS23 CS24 CS25 CS26 CS27 CS28 CS29 CS30 CS31 CS32 CS33 CS34 CS35 CS36 CS37 CS40 CS41 CS42 CS43 CS44 CS45 CS47 CS50 CS51 CS52 CS53 CS54 CS57 CS58 CS59 CS60 CS61 CS62 CS63 CS64 CS65 CS66 CS67 CS68 CS69 CS70 CS71 CS72 CS73 CS74 CS75 CS76 CS77 CS78 CS79 CS80 CS81 CS82 CS83 CS84 CS85 CS86 CS87 CS88 CS89 CS90 CS91 CS92 CS93 CS94 CS95 CS96 CS97 CS98 CS99 EU7 EU8 EU10 EU12 EU13 EU14 EU15 EU16 EU17 EU18 EU19 EU25 EU26 EU27 EU28 EU29 EU30 EU31 EU32 NA104 NA107 NA109 NA100 NA101 NA103 NA102 NA105 NA119 NA116 NA110 NA118 NA112 NA111 NA115 NA114 NA113 NA117 NA121 NA124 NA122 NA120 NA126 NA127 NA123 NA129 NA130 NA134 NA133 NA136 NA135 NA132 NA131 NA146 NA142 NA141 NA154 NA155 NA172 NA174 NA171 NA173 NA196 NA21 NA37 NA39 NA44 NA45 NA46 NA47 NA49 NA52 NA54 NA57 NA58 NA59 NA61 NA62 NA64 NA65 NA66 NA67 NA68 NA69 NA70 NA71 NA72 NA73 NA74 NA75 NA76 NA77 NA79 NA80 NA81 NA82 NA83 NA84 NA85 NA86 NA87 NA88 NA89 NA90 NA91 NA92 NA93 NA94 NA95 NA96 NA97 NA98 NA99 UM1 UM2 UM3 UM4 UM5 UM6 UM7

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