| Bug #72829 | LOCK_grant is major contention point, leaves 30-40% idle CPU. | ||
|---|---|---|---|
| Submitted: | 2 Jun 2014 2:02 | Modified: | 27 Mar 2015 14:52 |
| Reporter: | Stewart Smith | Email Updates: | |
| Status: | Closed | Impact on me: | |
| Category: | MySQL Server: Security: Privileges | Severity: | S5 (Performance) |
| Version: | 5.7.4-m14 | OS: | Linux |
| Assigned to: | Dmitry Lenev | CPU Architecture: | Any |
| Tags: | contention, mutex, performance, PowerPC | ||
If the data you need to attach is more than 50MB, you should create a compressed archive of the data, split it to 50MB chunks, and upload each of them as a separate attachment.
To split a large file:
- On *nix platforms use the split command e.g.
split -b 50MB <my_large_archive> <my_split_archive_prefix> - On windows use WinZip or a similar utility to split the large file
