Messages in this thread | | | Date | Mon, 20 Dec 1999 15:39:06 -0500 (EST) | From | William Montgomery <> | Subject | lowlatency recap |
| |
Over the past few weeks I have been testing the lowlatency patch (lowlatency-2.2.13-A1) on a PIII 500MHz machine with kernel 2.2.13 compiled UP. The scheduling latencies I have now are +/-200usec max and are a significant improvement. To achieve this, additional patches have been provided by Andrea Arcangeli, Ingo Molnar, and Jamie Lokier.
There are two remaining holes that I am aware of; the ps2 mouse driver disables interrupts for 3msec during aux_write_dev (and probably other functions) which is a bad thing for scheduling latency and the bottom half patches I have are probably not complete for the SMP case.
Would it be useful for me to create a new lowlatency-2.2.13-?? patch with the above patches merged in? I could submit it to Ingo and other interested people for review/approval. Would it be adviseable to also create a lowlatency-2.2.13aa6-?? patch, the 2.2.13aa6 bugfix release seems to have some pretty important patches.
Is it too late for any of this to get into the 2.2.14 release?
Wm
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |