Slow prompt with large variables #5236
Description
Describe the bug
When I have a variable of a significant size (100s megabytes, gigabytes), the REPL update slows down considerably.
How to reproduce
let x = (0..2000000 | each {|i| { foo: $i }})- Press enter to get
x - Pres enter again to go to a new REPL line: You'll notice it takes some time now for the prompt to appear
Expected behavior
Not to be so slow with large variables.
Screenshots
No response
Configuration
| key | value |
|---|---|
| version | 0.61.1 |
| branch | |
| tag | |
| short_commit | 76079d5 |
| commit_hash | 76079d5 |
| commit_date | 2022-04-18 22:28:01 +00:00 |
| build_os | linux-x86_64 |
| rust_version | rustc 1.60.0 (7737e0b5c 2022-04-04) |
| rust_channel | stable-x86_64-unknown-linux-gnu |
| cargo_version | cargo 1.60.0 (d1fd9fe 2022-03-01) |
| pkg_version | 0.61.1 |
| build_time | 2022-04-19 09:04:08 +03:00 |
| build_rust_channel | release |
| features | dataframe, default, trash, which, zip |
| installed_plugins | gstat |
Additional context
I'm wondering if it's the stack getting cloned somewhere (NuCompleter? prompt_update()?) that causes the slowdown.