Article: http://www.zzzprojects.com/entity-framework-extensions/docs/tutorials/performance-tuning

entity-framework-extensions-docs-tutorials-performance-tuning-example-1.cs

// Set Global Configuration
BulkOperationManager.BulkOperationBuilder = operation => operation.BatchSize = 1000;

// Set Instance Configuration
context.BulkSaveChanges(operation => operation.BatchSize = 100);

entity-framework-extensions-docs-tutorials-performance-tuning-example-2.cs

context.BulkSaveChanges(operation =>
{
   // Increasing/Decreasing the value affects the performance
   // There is no perfect value, it depends on column, trigger, index, etc.
   operation.BatchSize = 100; // Default value = 10,000 for SQL Server

   // Specify the timeout for a batch
   operation.BatchTimeout = 180; // seconds, default value = 15s

   // Specify the delay between  batch executions
   operation.BatchDelayInterval = 100; // milliseconds, default value = 0
});

entity-framework-extensions-docs-tutorials-performance-tuning-example-3.cs

context.BulkSaveChanges(operation =>
{
   // Specify how many batch a temporary table must contain
   bulk.TemporaryTableBatchByTable = 5; // Default value = 0 (infinite)

   // Can increase/decrease performance depending on the number of columns
   bulk.TemporaryTableInsertBatchSize = 1000; // Default value = 10,000

   // Increasing the value may improve performance for sources with few records
   bulk.TemporaryTableMinRecord = 15; // Default value = 10

   // Using TableLock may increase performance but also increase row lock
   bulk.TemporaryTableUseTableLock = true; // Default value = false
});

entity-framework-extensions-docs-tutorials-performance-tuning-example-4.cs

context.BulkSaveChanges(operation =>
{
   // SET default options to use when a SqlBulkCopy instance is used
   bulk.SqlBulkCopyOptions = SqlBulkCopyOptions.Default | SqlBulkCopyOptions.TableLock;
});