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| author | David S. Miller <davem@davemloft.net> | 2019-11-15 23:25:42 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-11-15 23:25:42 +0300 |
| commit | 43da44c87678612f301d6ef6314064a6b52aad60 (patch) | |
| tree | dcf587aa085a7e71ef483f6beba17147163e2e64 /net/smc/smc_ism.c | |
| parent | 983db6198f0d0ee406f365069901387e7834c3c0 (diff) | |
| parent | 8d07a7930434afd7ca4faa90ed478552d4a84b17 (diff) | |
| download | linux-43da44c87678612f301d6ef6314064a6b52aad60.tar.xz | |
Merge branch 'net-stmmac-CPU-Performance-Improvements'
Jose Abreu says:
====================
net: stmmac: CPU Performance Improvements
CPU Performance improvements for stmmac. Please check bellow for results
before and after the series.
Patch 1/7, allows RX Interrupt on Completion to be disabled and only use the
RX HW Watchdog.
Patch 2/7, setups the default RX coalesce settings instead of using the
minimum value.
Patch 3/7 and 4/7, removes the uneeded computations for RX Flow Control
activation/de-activation, on some cases.
Patch 5/7, tunes-up the default coalesce settings.
Patch 6/7, re-works the TX coalesce timer activation logic.
Patch 7/7, removes the now uneeded TBU interrupt.
NetPerf UDP Results:
--------------------
Socket Message Elapsed Messages CPU Service
Size Size Time Okay Errors Throughput Util Demand
bytes bytes secs # # 10^6bits/sec % SS us/KB
--- XGMAC@2.5G: Before
212992 1400 10.00 2100620 0 2351.7 36.69 5.112
212992 10.00 2100539 2351.6 26.18 3.648
--- XGMAC@2.5G: After
212992 1400 10.00 2108972 0 2361.5 21.73 3.015
212992 10.00 2097038 2348.1 19.21 2.666
--- GMAC5@1G: Before
212992 1400 10.00 786000 0 880.2 34.71 12.923
212992 10.00 786000 880.2 23.42 8.719
--- GMAC5@1G: After
212992 1400 10.00 842648 0 943.7 14.12 4.903
212992 10.00 842648 943.7 12.73 4.418
Perf TCP Results on RX Path:
----------------------------
--- XGMAC@2.5G: Before
22.51% swapper [stmmac] [k] dwxgmac2_dma_interrupt
10.82% swapper [stmmac] [k] dwxgmac2_host_mtl_irq_status
5.21% swapper [stmmac] [k] dwxgmac2_host_irq_status
4.67% swapper [stmmac] [k] dwxgmac3_safety_feat_irq_status
3.63% swapper [kernel.kallsyms] [k] stack_trace_consume_entry
2.74% iperf3 [kernel.kallsyms] [k] copy_user_enhanced_fast_string
2.52% swapper [kernel.kallsyms] [k] update_stack_state
1.94% ksoftirqd/0 [stmmac] [k] dwxgmac2_dma_interrupt
1.45% iperf3 [kernel.kallsyms] [k] queued_spin_lock_slowpath
1.26% swapper [kernel.kallsyms] [k] create_object
--- XGMAC@2.5G: After
7.43% swapper [kernel.kallsyms] [k] stack_trace_consume_entry
5.86% swapper [stmmac] [k] dwxgmac2_dma_interrupt
5.68% swapper [kernel.kallsyms] [k] update_stack_state
4.71% iperf3 [kernel.kallsyms] [k] copy_user_enhanced_fast_string
2.88% swapper [kernel.kallsyms] [k] create_object
2.69% swapper [stmmac] [k] dwxgmac2_host_mtl_irq_status
2.61% swapper [stmmac] [k] stmmac_napi_poll_rx
2.52% swapper [kernel.kallsyms] [k] unwind_next_frame.part.4
1.48% swapper [kernel.kallsyms] [k] unwind_get_return_address
1.38% swapper [kernel.kallsyms] [k] arch_stack_walk
--- GMAC5@1G: Before
31.29% swapper [stmmac] [k] dwmac4_dma_interrupt
14.57% swapper [stmmac] [k] dwmac4_irq_mtl_status
10.66% swapper [stmmac] [k] dwmac4_irq_status
1.97% swapper [kernel.kallsyms] [k] stack_trace_consume_entry
1.73% iperf3 [kernel.kallsyms] [k] copy_user_enhanced_fast_string
1.59% swapper [kernel.kallsyms] [k] update_stack_state
1.15% iperf3 [kernel.kallsyms] [k] do_syscall_64
1.01% ksoftirqd/0 [stmmac] [k] dwmac4_dma_interrupt
0.89% swapper [kernel.kallsyms] [k] __default_send_IPI_dest_field
0.75% swapper [stmmac] [k] stmmac_napi_poll_rx
--- GMAC5@1G: After
6.70% swapper [kernel.kallsyms] [k] stack_trace_consume_entry
5.79% swapper [stmmac] [k] dwmac4_dma_interrupt
5.29% swapper [kernel.kallsyms] [k] update_stack_state
3.52% iperf3 [kernel.kallsyms] [k] copy_user_enhanced_fast_string
2.83% swapper [stmmac] [k] dwmac4_irq_mtl_status
2.62% swapper [kernel.kallsyms] [k] create_object
2.46% swapper [stmmac] [k] stmmac_napi_poll_rx
2.32% swapper [kernel.kallsyms] [k] unwind_next_frame.part.4
2.19% swapper [stmmac] [k] dwmac4_irq_status
1.39% swapper [kernel.kallsyms] [k] unwind_get_return_address
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_ism.c')
0 files changed, 0 insertions, 0 deletions