From MozillaZine Knowledge Base
For performance reasons, items that appear in the dropdown are retrieved in batches (“chunks”) on a timer. This preference determines the number of items to fetch at a time.
Possible values and their effects
The number of dropdown items to fetch at a time. Default is 1000.
First checked in
Has an effect in
- Firefox (nightly builds since 2008-01-29)
- Bug 414489 - Change default search chunk size and timeout and let users adjust them
- Bug 415489 - URL bar autocomplete slow since bug 414507