David Miller [off-list ref] wrote on 08/22/2007 02:44:40 PM:

From: Krishna Kumar2 <redacted>
Date: Wed, 22 Aug 2007 12:33:04 +0530

quoted

Does turning off batching solve that problem? What I mean by that is:
batching can be disabled if a TSO device is worse for some cases.

This new batching stuff isn't going to be enabled or disabled
on a per-device basis just to get "parity" with how things are
now.

It should be enabled by default, and give at least as good
performance as what can be obtained right now.

That was how it was in earlier revisions. In revision4 I coded it so
that it is enabled only if explicitly set by the user. I can revert
that change.

Otherwise it's a clear regression.

Definitely. For drivers that support it, it should not reduce performance.

Thanks,

- KK