[dpdk-dev] [PATCH v4 1/2] lib/ring: apis to support configurable element size

[David Christensen]

>> Tried this on a Power9 platform (3.6GHz), with two numa nodes and 16
>> cores/node (SMT=4).  Applied all 3 patches in v5, test results are as
>> follows:
>>
>> RTE>>ring_perf_elem_autotest
>> ### Testing single element and burst enq/deq ### SP/SC single enq/dequeue:
>> 42 MP/MC single enq/dequeue: 59 SP/SC burst enq/dequeue (size: 8): 5
>> MP/MC burst enq/dequeue (size: 8): 7 SP/SC burst enq/dequeue (size: 32): 2
>> MP/MC burst enq/dequeue (size: 32): 2
>>
>> ### Testing empty dequeue ###
>> SC empty dequeue: 7.81
>> MC empty dequeue: 7.81
>>
>> ### Testing using a single lcore ###
>> SP/SC bulk enq/dequeue (size: 8): 5.76
>> MP/MC bulk enq/dequeue (size: 8): 7.66
>> SP/SC bulk enq/dequeue (size: 32): 2.10
>> MP/MC bulk enq/dequeue (size: 32): 2.57
>>
>> ### Testing using two hyperthreads ###
>> SP/SC bulk enq/dequeue (size: 8): 13.13
>> MP/MC bulk enq/dequeue (size: 8): 13.98
>> SP/SC bulk enq/dequeue (size: 32): 3.41
>> MP/MC bulk enq/dequeue (size: 32): 4.45
>>
>> ### Testing using two physical cores ### SP/SC bulk enq/dequeue (size: 8):
>> 11.00 MP/MC bulk enq/dequeue (size: 8): 10.95 SP/SC bulk enq/dequeue
>> (size: 32): 3.08 MP/MC bulk enq/dequeue (size: 32): 3.40
>>
>> ### Testing using two NUMA nodes ###
>> SP/SC bulk enq/dequeue (size: 8): 63.41
>> MP/MC bulk enq/dequeue (size: 8): 62.70
>> SP/SC bulk enq/dequeue (size: 32): 15.39 MP/MC bulk enq/dequeue (size:
>> 32): 22.96
>>
> Thanks for running this. There is another test 'ring_perf_autotest' which provides the numbers with the original implementation. The goal is to make sure the numbers with the original implementation are the same as these. Can you please run that as well?
> 
RTE>>ring_perf_autotest
### Testing single element and burst enq/deq ###
SP/SC single enq/dequeue: 42
MP/MC single enq/dequeue: 59
SP/SC burst enq/dequeue (size: 8): 6
MP/MC burst enq/dequeue (size: 8): 8
SP/SC burst enq/dequeue (size: 32): 2
MP/MC burst enq/dequeue (size: 32): 3

### Testing empty dequeue ###
SC empty dequeue: 7.81
MC empty dequeue: 7.81

### Testing using a single lcore ###
SP/SC bulk enq/dequeue (size: 8): 6.91
MP/MC bulk enq/dequeue (size: 8): 8.87
SP/SC bulk enq/dequeue (size: 32): 2.55
MP/MC bulk enq/dequeue (size: 32): 3.04

### Testing using two hyperthreads ###
SP/SC bulk enq/dequeue (size: 8): 11.70
MP/MC bulk enq/dequeue (size: 8): 13.56
SP/SC bulk enq/dequeue (size: 32): 3.48
MP/MC bulk enq/dequeue (size: 32): 3.95

### Testing using two physical cores ###
SP/SC bulk enq/dequeue (size: 8): 10.86
MP/MC bulk enq/dequeue (size: 8): 11.11
SP/SC bulk enq/dequeue (size: 32): 2.97
MP/MC bulk enq/dequeue (size: 32): 3.43

### Testing using two NUMA nodes ###
SP/SC bulk enq/dequeue (size: 8): 48.07
MP/MC bulk enq/dequeue (size: 8): 67.38
SP/SC bulk enq/dequeue (size: 32): 13.04
MP/MC bulk enq/dequeue (size: 32): 27.10
Test OK

Dave