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Date:      Wed, 19 Feb 2020 13:52:51 -0800
From:      Eric Joyner <erj@freebsd.org>
To:        KIRIYAMA Kazuhiko <kiri@truefc.org>
Cc:        "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
Subject:   Re: How to work with in 1GbE network ?
Message-ID:  <CA%2Bb0zg_rWnyiOa3pfQqFoQyNZg1rkAqD5ZYrQ=YM6SrqUfiEZQ@mail.gmail.com>
In-Reply-To: <202002190603.01J63naa005208@kx.truefc.org>
References:  <202002190603.01J63naa005208@kx.truefc.org>

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Have you tried turning off jumbo frames?

- Eric

On Tue, Feb 18, 2020 at 10:04 PM KIRIYAMA Kazuhiko <kiri@truefc.org> wrote:

> Hi, all
>
> I wonder how to work ixgbe in 1GbE network. I tried to test
> in below:
>
>     internet
>         |
> +-------+--------+
> | Netgear JGS516 |
> +---+-----+------+  +----------------------+
>     |     +---------+ 13.0-CURRENT(r356739)| src_host
>     |               +----------------------+
>     |    +----------------------+
>     +----+ 13.0-CURRENT(r353025)| dest_host
>          +----------------------+
>
> And try to NFS mount dest_host in src_host, but mount does
> not work smoothly. It takes about 9 second !!! :
>
> # /usr/bin/time
> time*    timeout*
> # /usr/bin/time -h mount -t nfs dest_host:/.dake /.dake
>         9.15s real              0.04s user              0.02s sys
> # nfsstat -m
> dest_host:/.dake on /.dake
>
> nfsv3,tcp,resvport,hard,cto,lockd,sec=sys,acdirmin=3,acdirmax=60,acregmin=5,acregmax=60,nametimeo=60,negnametimeo=60,rsize=65536,wsize=65536,readdirsize=65536,readahead=1,wcommitsize=16777216,timeout=120,retrans=2
> # /usr/bin/time -h umount /.dake
>         27.26s real             0.04s user              0.02s sys
>
> src_host to dest_host was set to mtu 9000:
>
> # route get dest_host
>    route to: xxx.xxx.xxx.xxx.foo
> destination: xxx.xxx.xxx.xxx.foo
>        mask: xxx.xxx.xxx.xxx
>         fib: 0
>   interface: ix0
>       flags: <UP,DONE,PINNED>
>  recvpipe  sendpipe  ssthresh  rtt,msec    mtu        weight    expire
>        0         0         0         0      9000         1         0
> #
>
> What's wrong ?  src_host environments are as follows:
>
> # uname -a
> FreeBSD src_host 13.0-CURRENT FreeBSD 13.0-CURRENT #0 r356739M: Tue Jan 28
> 21:49:59 JST 2020     root@msrvkx:/usr/obj/usr/src/amd64.amd64/sys/XIJ
> amd64
> # ifconfig ix0
> ix0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9000
>
> options=4e538bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6,NOMAP>
>         ether 3c:ec:ef:01:a4:e0
>         inet xxx.xxx.xxx.xxx netmask 0xfffffff8 broadcast xxx.xxx.xxx.xxx
>         media: Ethernet autoselect (1000baseT
> <full-duplex,rxpause,txpause>)
>         status: active
>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> # sysctl -a|grep jumbo
> kern.ipc.nmbjumbo16: 680520
> kern.ipc.nmbjumbo9: 1209814
> kern.ipc.nmbjumbop: 4083125
> vm.uma.mbuf_jumbo_16k.stats.xdomain: 0
> vm.uma.mbuf_jumbo_16k.stats.fails: 0
> vm.uma.mbuf_jumbo_16k.stats.frees: 0
> vm.uma.mbuf_jumbo_16k.stats.allocs: 0
> vm.uma.mbuf_jumbo_16k.stats.current: 0
> vm.uma.mbuf_jumbo_16k.domain.0.wss: 0
> vm.uma.mbuf_jumbo_16k.domain.0.imin: 0
> vm.uma.mbuf_jumbo_16k.domain.0.imax: 0
> vm.uma.mbuf_jumbo_16k.domain.0.nitems: 0
> vm.uma.mbuf_jumbo_16k.limit.bucket_cnt: 0
> vm.uma.mbuf_jumbo_16k.limit.bucket_max: 18446744073709551615
> vm.uma.mbuf_jumbo_16k.limit.sleeps: 0
> vm.uma.mbuf_jumbo_16k.limit.sleepers: 0
> vm.uma.mbuf_jumbo_16k.limit.max_items: 680520
> vm.uma.mbuf_jumbo_16k.limit.items: 0
> vm.uma.mbuf_jumbo_16k.keg.domain.0.free: 0
> vm.uma.mbuf_jumbo_16k.keg.domain.0.pages: 0
> vm.uma.mbuf_jumbo_16k.keg.efficiency: 99
> vm.uma.mbuf_jumbo_16k.keg.align: 7
> vm.uma.mbuf_jumbo_16k.keg.ipers: 1
> vm.uma.mbuf_jumbo_16k.keg.ppera: 4
> vm.uma.mbuf_jumbo_16k.keg.rsize: 16384
> vm.uma.mbuf_jumbo_16k.keg.name: mbuf_jumbo_16k
> vm.uma.mbuf_jumbo_16k.bucket_size_max: 253
> vm.uma.mbuf_jumbo_16k.bucket_size: 253
> vm.uma.mbuf_jumbo_16k.flags:
> 0x43a10000<TRASH,LIMIT,CTORDTOR,VTOSLAB,OFFPAGE,FIRSTTOUCH>
> vm.uma.mbuf_jumbo_16k.size: 16384
> vm.uma.mbuf_jumbo_9k.stats.xdomain: 0
> vm.uma.mbuf_jumbo_9k.stats.fails: 0
> vm.uma.mbuf_jumbo_9k.stats.frees: 0
> vm.uma.mbuf_jumbo_9k.stats.allocs: 0
> vm.uma.mbuf_jumbo_9k.stats.current: 0
> vm.uma.mbuf_jumbo_9k.domain.0.wss: 0
> vm.uma.mbuf_jumbo_9k.domain.0.imin: 0
> vm.uma.mbuf_jumbo_9k.domain.0.imax: 0
> vm.uma.mbuf_jumbo_9k.domain.0.nitems: 0
> vm.uma.mbuf_jumbo_9k.limit.bucket_cnt: 0
> vm.uma.mbuf_jumbo_9k.limit.bucket_max: 18446744073709551615
> vm.uma.mbuf_jumbo_9k.limit.sleeps: 0
> vm.uma.mbuf_jumbo_9k.limit.sleepers: 0
> vm.uma.mbuf_jumbo_9k.limit.max_items: 1209814
> vm.uma.mbuf_jumbo_9k.limit.items: 0
> vm.uma.mbuf_jumbo_9k.keg.domain.0.free: 0
> vm.uma.mbuf_jumbo_9k.keg.domain.0.pages: 0
> vm.uma.mbuf_jumbo_9k.keg.efficiency: 75
> vm.uma.mbuf_jumbo_9k.keg.align: 7
> vm.uma.mbuf_jumbo_9k.keg.ipers: 1
> vm.uma.mbuf_jumbo_9k.keg.ppera: 3
> vm.uma.mbuf_jumbo_9k.keg.rsize: 9216
> vm.uma.mbuf_jumbo_9k.keg.name: mbuf_jumbo_9k
> vm.uma.mbuf_jumbo_9k.bucket_size_max: 253
> vm.uma.mbuf_jumbo_9k.bucket_size: 253
> vm.uma.mbuf_jumbo_9k.flags: 0x43010000<TRASH,LIMIT,CTORDTOR,FIRSTTOUCH>
> vm.uma.mbuf_jumbo_9k.size: 9216
> vm.uma.mbuf_jumbo_page.stats.xdomain: 0
> vm.uma.mbuf_jumbo_page.stats.fails: 0
> vm.uma.mbuf_jumbo_page.stats.frees: 2199
> vm.uma.mbuf_jumbo_page.stats.allocs: 67734
> vm.uma.mbuf_jumbo_page.stats.current: 65535
> vm.uma.mbuf_jumbo_page.domain.0.wss: 0
> vm.uma.mbuf_jumbo_page.domain.0.imin: 0
> vm.uma.mbuf_jumbo_page.domain.0.imax: 0
> vm.uma.mbuf_jumbo_page.domain.0.nitems: 0
> vm.uma.mbuf_jumbo_page.limit.bucket_cnt: 0
> vm.uma.mbuf_jumbo_page.limit.bucket_max: 18446744073709551615
> vm.uma.mbuf_jumbo_page.limit.sleeps: 0
> vm.uma.mbuf_jumbo_page.limit.sleepers: 0
> vm.uma.mbuf_jumbo_page.limit.max_items: 4083125
> vm.uma.mbuf_jumbo_page.limit.items: 67298
> vm.uma.mbuf_jumbo_page.keg.domain.0.free: 0
> vm.uma.mbuf_jumbo_page.keg.domain.0.pages: 67298
> vm.uma.mbuf_jumbo_page.keg.efficiency: 97
> vm.uma.mbuf_jumbo_page.keg.align: 7
> vm.uma.mbuf_jumbo_page.keg.ipers: 1
> vm.uma.mbuf_jumbo_page.keg.ppera: 1
> vm.uma.mbuf_jumbo_page.keg.rsize: 4096
> vm.uma.mbuf_jumbo_page.keg.name: mbuf_jumbo_page
> vm.uma.mbuf_jumbo_page.bucket_size_max: 253
> vm.uma.mbuf_jumbo_page.bucket_size: 253
> vm.uma.mbuf_jumbo_page.flags:
> 0x43a10000<TRASH,LIMIT,CTORDTOR,VTOSLAB,OFFPAGE,FIRSTTOUCH>
> vm.uma.mbuf_jumbo_page.size: 4096
> # sysctl -a | grep nmbclusters
> kern.ipc.nmbclusters: 8166250
> # sysctl -a | grep intr_storm_threshold
> hw.intr_storm_threshold: 0
> #
>
> and dest_host environments are as follows:
>
> # uname -a
> FreeBSD dest_host 13.0-CURRENT FreeBSD 13.0-CURRENT #0 r353025: Thu Oct  3
> 19:38:47 JST 2019     admin@dest_host:/ds/obj/current/13.0/r353025/ds/src/current/13.0/r353025/amd64.amd64/sys/GENERIC
> amd64
> # ifconfig igb0
> igb0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0
> mtu 9000
>
> options=4a520b9<RXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,NOMAP>
>         ether 0c:c4:7a:b3:cf:d4
>         inet xxx.xxx.xxx.xxx netmask 0xfffffff8 broadcast xxx.xxx.xxx.xxx
>         media: Ethernet autoselect (1000baseT <full-duplex>)
>         status: active
>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> # sysctl -a|grep jumbo
> kern.ipc.nmbjumbo16: 339123
> kern.ipc.nmbjumbo9: 602886
> kern.ipc.nmbjumbop: 2034741
> # sysctl -a | grep nmbclusters
> kern.ipc.nmbclusters: 4069482
> # sysctl -a | grep intr_storm_threshold
> hw.intr_storm_threshold: 0
> #
>
> Best regards
> ---
> Kazuhiko Kiriyama
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