diff options
Diffstat (limited to 'sdkconfig.defaults')
| -rw-r--r-- | sdkconfig.defaults | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/sdkconfig.defaults b/sdkconfig.defaults index 1ba8375..9e8c9e8 100644 --- a/sdkconfig.defaults +++ b/sdkconfig.defaults @@ -29,18 +29,14 @@ CONFIG_LWIP_IPV4=y CONFIG_LWIP_IPV6=y CONFIG_MDNS_MAX_INTERFACES=1 -# TCP receive-window + buffer tuning. Earlier attempt under HTTP -# regressed because every /frame opened a fresh socket and we ate -# the slow-start cost repeatedly. Under the streaming pivot the -# socket is long-lived: slow-start happens once, then we run with -# the full window for the rest of the session — which is exactly -# the workload these knobs are designed for. Larger WND lets the -# sender keep more bytes in flight per ACK and pushes our recv -# throughput ceiling up from ~5.3 MB/s. -CONFIG_LWIP_TCP_WND_DEFAULT=65535 -CONFIG_LWIP_TCP_SND_BUF_DEFAULT=65535 -CONFIG_LWIP_TCP_RECVMBOX_SIZE=16 -CONFIG_LWIP_TCP_SACK_OUT=y +# TCP tuning attempted (WND=64k, SND_BUF=64k, RECVMBOX=16, SACK on) +# after the streaming pivot landed. The accept path then silently +# failed — Scrypted's SYN was acked but no client-connected log +# fired, and the stream never moved a byte. Almost certainly lwIP's +# PBUF / MEMP pools weren't scaled to back the larger windows on +# multiple concurrent sockets (httpd has 4, stream has 1). Revisit +# with PBUF_POOL_SIZE + MEMP_NUM_TCP_PCB bumps next time, but for +# now ride the lwIP defaults which sustain ~5.3 MB/s ingest. # HTTP server CONFIG_HTTPD_MAX_REQ_HDR_LEN=1024 |