diff options
| -rw-r--r-- | sdkconfig.defaults | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sdkconfig.defaults b/sdkconfig.defaults index 1a71f91..b7bb0ed 100644 --- a/sdkconfig.defaults +++ b/sdkconfig.defaults @@ -23,6 +23,15 @@ CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL=16384 # Ethernet (Waveshare ESP32-P4-ETH-POE: internal EMAC + external PHY) CONFIG_ETH_ENABLED=y CONFIG_ETH_USE_ESP32_EMAC=y +# EMAC RX DMA pool must exceed TCP_WND or a full-window burst overruns +# the RX descriptors and the silent tail-drop puts the sender into a +# ~200-400ms RTO stall (measured: WND=23040 with the default 20x512B +# = 10KB pool made recv bimodal — wire_max 75Mbps on clean frames, +# 200-450ms stalls on lossy ones, sender fps 20 -> 14). 1600B = one +# full MSS frame per buffer (also 1 descriptor/packet instead of 3); +# 24 x 1600 = 38.4KB >= 23040 + slack. ~44KB extra internal RAM. +CONFIG_ETH_DMA_BUFFER_SIZE=1600 +CONFIG_ETH_DMA_RX_BUFFER_NUM=24 # LWIP / mDNS CONFIG_LWIP_IPV4=y |