drivers/dma/skeleton/ is not setting pthread affinity based on the lcore shared as arguments
https://bugs.dpdk.org/show_bug.cgi?id=1270
Bug ID: 1270
Summary: drivers/dma/skeleton/ is not setting pthread affinity
based on the lcore shared as arguments
Product: DPDK
Version: 23.07
Hardware: All
OS: Linux
Status: UNCONFIRMED
Severity: critical
Priority: Normal
Component: other
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Issue: when using dpdk skeleton DMA with lcore arguments, we expect the Software DMA to be affinitized to the selected lcore. Currently this is not working.
Example: ./buildgcc/app/dpdk-test-dma-perf --config app/test-dma-perf/my.ini --log-level=pmd.dma,8
Logs:
``` config file parsing... config file parsing complete. Running cases... Running case 1 EAL: Detected CPU lcores: 32 EAL: Detected NUMA nodes: 4 EAL: Detected static linkage of DPDK EAL: Selected IOVA mode 'VA' EAL: No free 2048 kB hugepages reported on node 0 EAL: No free 2048 kB hugepages reported on node 1 EAL: No free 2048 kB hugepages reported on node 2 EAL: No free 2048 kB hugepages reported on node 3 skeldma_parse_vdev_args(): Parse lcore_id = 20 skeldma_probe(): Create dma_skeleton dmadev with lcore-id 20 TELEMETRY: No legacy callbacks, legacy socket not created Number of used lcores: 31. Running scenario 1 Number of used dmadevs: 1. Start testing.... lcore 3, DMA dma_skeleton, DMA Ring Size: 1024, Kick Batch Size: 32. Average Cycles/op: 526, Buffer Size: 64 B, Buffer Number: 81920, Memory: 10.00 MB, Frequency: 3.840 Ghz. ```
Current Behavior: currently dma core is running on free available core.
Configuration:
```
[case1]
│·································································
type=DMA_MEM_COPY
│·································································
mem_size=10
│·································································
buf_size=64,8192,2,MUL
│·································································
dma_ring_size=1024
│·································································
kick_batch=32
│·································································
src_numa_node=0
│·································································
dst_numa_node=0
│·································································
cache_flush=0
│·································································
test_seconds=2
│·································································
lcore_dma=lcore3@dma_skeleton
│·································································
eal_args=--in-memory --vdev=dma_skeleton,lcore=20 --no-pci -l1-31
```Signature · 2 lines
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https://bugs.dpdk.org/show_bug.cgi?id=1270
David Marchand ([email protected]) changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |[email protected]
Resolution|--- |FIXED--- Comment #4 from David Marchand ([email protected]) --- Fixed in commit 2f9afbe4f6fc ("dma/skeleton: fix thread affinity").
Signature · 2 lines
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