### What this PR does / why we need it?
Fix the OOM (Out-of-Memory) error in the single-node-deepseek-v3-2-w8a8
nightly test of vllm-ascend:
- Reduced the value of HCCL_BUFFSIZE
- Lowered the gpu-memory-utilization
Optimize service-side performance:
Updated service-oriented configuration parameters (e.g., max-num-seqs,
cudagraph_capture_sizes, batch_size) to improve the inference
performance,so that the performance is closer to the optimal performance
of the current mainline.
Align performance baseline with main branch:
Updated the performance baseline according to the latest performance
data
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
The test has passed.
https://github.com/vllm-project/vllm-ascend/actions/runs/23734079080/job/69134387320?pr=7793
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Signed-off-by: wyh145 <1987244901@qq.com>
2cb9195ff0