[LU-905] keep BH reference on root node of IAM container Created: 08/Dec/11 Updated: 09/Dec/11 Resolved: 09/Dec/11 |
|
| Status: | Resolved |
| Project: | Lustre |
| Component/s: | None |
| Affects Version/s: | Lustre 2.2.0 |
| Fix Version/s: | Lustre 2.2.0 |
| Type: | Improvement | Priority: | Minor |
| Reporter: | Liang Zhen (Inactive) | Assignee: | Liang Zhen (Inactive) |
| Resolution: | Duplicate | Votes: | 0 |
| Labels: | None | ||
| Story Points: | 3 |
| Rank (Obsolete): | 10715 |
| Description |
|
IAM in ldiskfs-osd will always consume some slots in BH LRU (see: fs/buffer.c), if we keep buffer_head reference on root node, we can save one slot in BH LRU and could be somehow helpful for overall performance, I did some tests, LRU hits rate increased 5%-10% while creating files if we always keep this reference. |
| Comments |
| Comment by Liang Zhen (Inactive) [ 09/Dec/11 ] |
|
Sorry I didn't remember that I've created a ticket for it, close it now |