Re: [libvirt] [PATCHv2 1/9] maint: use lighter-weight function for straight appends

2011/4/14 Eric Blake <eblake@redhat.com>:

It costs quite a few processor cycles to go through printf parsing just to determine that we only meant to append.

-        virBufferVSprintf(&buf, "%s", k); -        virBufferVSprintf(&buf, "%s", "="); -        virBufferVSprintf(&buf, "%s", v); +        virBufferVSprintf(&buf, "%s=%s", k, v);

Nice one :) ACK. Matthias