| Bug #49169 | read_view_open_now is inefficient with many concurrent sessions | ||
|---|---|---|---|
| Submitted: | 27 Nov 2009 16:09 | Modified: | 28 Feb 2013 13:27 |
| Reporter: | Mark Callaghan | Email Updates: | |
| Status: | Closed | Impact on me: | |
| Category: | MySQL Server: InnoDB Plugin storage engine | Severity: | S5 (Performance) |
| Version: | 5.0,5.1,5.1 plugin | OS: | Any |
| Assigned to: | Sunny Bains | CPU Architecture: | Any |
| Tags: | innodb, kernel_mutex, performance, read_view_open_now | ||
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
