sparc64: Fix numa distance values
Orabug: 21896119
Use machine descriptor (MD) to get node latency
values instead of just using default values.
Testing:
On an T5-8 system with:
- total nodes = 8
- self latencies = 0x26d18
- latency to other nodes = 0x3a598
=> latency ratio = ~1.5
output of numactl --hardware
- before fix:
node distances:
node 0 1 2 3 4 5 6 7
0: 10 20 20 20 20 20 20 20
1: 20 10 20 20 20 20 20 20
2: 20 20 10 20 20 20 20 20
3: 20 20 20 10 20 20 20 20
4: 20 20 20 20 10 20 20 20
5: 20 20 20 20 20 10 20 20
6: 20 20 20 20 20 20 10 20
7: 20 20 20 20 20 20 20 10
- after fix:
node distances:
node 0 1 2 3 4 5 6 7
0: 10 15 15 15 15 15 15 15
1: 15 10 15 15 15 15 15 15
2: 15 15 10 15 15 15 15 15
3: 15 15 15 10 15 15 15 15
4: 15 15 15 15 10 15 15 15
5: 15 15 15 15 15 10 15 15
6: 15 15 15 15 15 15 10 15
7: 15 15 15 15 15 15 15 10
Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com>
Reviewed-by: Chris Hyser <chris.hyser@oracle.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 files changed