[OpenAFS] replication over slower bandwidth

Simon Wilkinson simonxwilkinson@gmail.com
Sat, 11 Feb 2012 10:27:49 +0000

On 10 Feb 2012, at 04:29, Jeffrey Altman wrote:

> That field was commented out before OpenAFS and maxPacketSize was not
> referenced anywhere in the source code.  What restoring that field to
> rx.h does is force the struct rxevent * values that follow it to =
> properly aligned in 64-bit builds.
> Lack of proper alignment can really hurt.

I'm a little confused here. The System V ABI, which Linux claims to =
follow, specifies that pointers are 8 byte aligned - see Figure 3.1 of =

Given that your speed improvements are from vos release, this must be =
userspace code, so I'm not certain that this is an alignment issue.