>> Next I try netdumping to another FreeBSD-host (virtual machine on >> VMWare >> hypervisor): >> root@host-3:~ # uname -mv >> FreeBSD 12.2-STABLE r369412 GENERIC amd64 >> root@host-3:~ # ifconfig em0 >> em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 >> >> options=81009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,VLAN_HWFILTER> >> inet 192.168.7.18 netmask 0xffffff00 broadcast 192.168.7.255 >> media: Ethernet autoselect (1000baseT <full-duplex>) >> status: active >> nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> >> root@host-3:~ # >> >> And netdumping to this host are still slow (~the same 5KB/s). >> >> Next step another FreeBSD-host (virtual machine on VirtualBox hypevisor): >> root@host-4:~ # uname -mv >> FreeBSD 12.2-STABLE r369412 GENERIC amd64 >> root@host-4:~ # ifconfig em0 >> em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 >> >> options=81009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,VLAN_HWFILTER> >> inet 192.168.7.19 netmask 0xffffff00 broadcast 192.168.7.255 >> media: Ethernet autoselect (1000baseT <full-duplex>) >> status: active >> nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> >> root@host-4:~ # >> >> Both (host-3 and host-4) are installed from >> FreeBSD-12.2-STABLE-amd64-20210304-r369412-bootonly.iso >> When I caused a kernel panic by sysctl debug.kdb.panic on host-4, >> netdumping to >> host-3 show the same 5 KB/s. > netdump requires explicit acks from the other side. > Could you try dumping the exchange between the dumping host and the server to > verify that acks are sent immediately after receiving the next chunk? Sure. There is a dump: https://disk.yandex.ru/d/i27n1m-I80DaEg What should be tuned: netdumpd, netdumpd-host or something else?
Now I can't completely done netdump: there frequenly error: ** DUMP FAILED (ERROR 60) ** Cannot dump: unknown error (error=60). and panic inside iflib: https://pastebin.com/1BTTjGLJ _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
