| Bug #59291 | InnoDB purge lag much worse for 5.5.8 versus 5.1 | ||
|---|---|---|---|
| Submitted: | 4 Jan 2011 20:32 | Modified: | 3 Oct 2013 6:10 |
| Reporter: | Mark Callaghan | Email Updates: | |
| Status: | Closed | Impact on me: | |
| Category: | MySQL Server: InnoDB storage engine | Severity: | S5 (Performance) |
| Version: | 5.5 | OS: | Any |
| Assigned to: | Sunny Bains | CPU Architecture: | Any |
| Tags: | innodb, lag, multiple rollback segments, purge | ||
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
[6 Jan 2011 23:48]
Alexey Stroganov
[12 Jan 2011 12:46]
Alexey Stroganov
chart for purge lag observed on 24 core box with and without taskset
Attachment: img_13685_3.png (image/png, text), 4.76 KiB.
[13 Jan 2011 21:05]
Alexey Stroganov
buffer pool usage for Ranger's results
Attachment: buffer_pool_usage.png (image/png, text), 8.75 KiB.
