heidsoft
linux 中网络 Buffering between the transport layer and the queueing disciplines
在Linux中，网络缓冲是指在传输层和队列调度之间的中间存储网络数据包的机制。这种缓冲机制在管理网络流量和确保数据包的有效传输方面起着关键作用。
缓冲的主要目的是在数据包等待被队列调度处理之前，为传入的数据包提供临时存储空间。这样可以更好地控制数据包的传输，避免网络中的数据包丢失或拥塞。
缓冲帮助平滑处理数据包到达速率的波动，为传输层和队列调度之间提供缓冲区。它使得网络堆栈的不同组件之间能够更好地协调，确保数据包按照受控和有序的方式传输。
通过使用缓冲，网络网卡可以处理突发的数据包流量，而不会压垮队列调度或导致数据包丢失。它还提供了在管理网络流量时的灵活性，允许使用不同的调度和优先级策略。
总的来说，Linux中传输层和队列调度之间的网络缓冲机制有助于优化网络流量，提高性能并确保可靠的数据包传输。
ethtool -g ens33 Ring parameters for ens33: Pre-set maximums: RX: 4096 RX Mini: 0 RX Jumbo: 0 TX: 4096 Current hardware settings: RX: 256 RX Mini: 0 RX Jumbo: 0 TX: 256
thtool -k ens33 Features for ens33: rx-checksumming: off tx-checksumming: on tx-checksum-ipv4: off [fixed] tx-checksum-ip-generic: on tx-checksum-ipv6: off [fixed] tx-checksum-fcoe-crc: off [fixed] tx-checksum-sctp: off [fixed] scatter-gather: on tx-scatter-gather: on tx-scatter-gather-fraglist: off [fixed] tcp-segmentation-offload: on tx-tcp-segmentation: on tx-tcp-ecn-segmentation: off [fixed] tx-tcp-mangleid-segmentation: off tx-tcp6-segmentation: off [fixed] generic-segmentation-offload: on generic-receive-offload: on large-receive-offload: off [fixed] rx-vlan-offload: on tx-vlan-offload: on [fixed] ntuple-filters: off [fixed] receive-hashing: off [fixed] highdma: off [fixed] rx-vlan-filter: on [fixed] vlan-challenged: off [fixed] tx-lockless: off [fixed] netns-local: off [fixed] tx-gso-robust: off [fixed] tx-fcoe-segmentation: off [fixed] tx-gre-segmentation: off [fixed] tx-gre-csum-segmentation: off [fixed] tx-ipxip4-segmentation: off [fixed] tx-ipxip6-segmentation: off [fixed] tx-udp_tnl-segmentation: off [fixed] tx-udp_tnl-csum-segmentation: off [fixed] tx-gso-partial: off [fixed] tx-sctp-segmentation: off [fixed] tx-esp-segmentation: off [fixed] tx-udp-segmentation: off [fixed] fcoe-mtu: off [fixed] tx-nocache-copy: off loopback: off [fixed] rx-fcs: off rx-all: off tx-vlan-stag-hw-insert: off [fixed] rx-vlan-stag-hw-parse: off [fixed] rx-vlan-stag-filter: off [fixed] l2-fwd-offload: off [fixed] hw-tc-offload: off [fixed] esp-hw-offload: off [fixed] esp-tx-csum-hw-offload: off [fixed] rx-udp_tunnel-port-offload: off [fixed] tls-hw-tx-offload: off [fixed] tls-hw-rx-offload: off [fixed] rx-gro-hw: off [fixed] tls-hw-record: off [fixed]