diff options
| author |   Damjan Marion <damarion@cisco.com> | 2016-11-24 22:20:05 +0100 |
|---|---|---|
| committer |   Neale Ranns <nranns@cisco.com> | 2016-11-25 09:27:31 +0000 |
| commit | 30230dd7f854e77008b257c8be1de648e473338e (patch) | |
| tree | 53e99fc7b066593ae9672cfbb80511362c53b450 /perftool/cpelinreg.c | |
| parent | 23a7412bda2c14b21deda66bc5555c9ee680dec8 (diff) | |
l2: fix latency issue casued by unnecesary read of previous cacheline
In majority of cases ethernet header sits at the beggining of cacheline.
Reading (dst_mac - 2) into 64 bit register is much more expensive
than doing simple bitwise shift, specially if previous cacheline is
not prefetched.
Change-Id: I35e53eae735098fb917a87c307e60a87e76e460f
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'perftool/cpelinreg.c')
0 files changed, 0 insertions, 0 deletions