ifb patch seems to work very well ;) # tc -s -d qd sh dev ifb10 qdisc mq 1: root Sent 1909520000 bytes 31798616 pkt (dropped 0, overlimits 0 requeues 0) backlog 29460b 491p requeues 0 qdisc netem 8002: parent 1:1 limit 100000 delay 3.0ms Sent 238320936 bytes 3971225 pkt (dropped 0, overlimits 0 requeues 0) rate 9723Kbit 20255pps backlog 3840b 64p requeues 0 qdisc netem 8003: parent 1:2 limit 100000 delay 3.0ms Sent 238581473 bytes 3975830 pkt (dropped 0, overlimits 0 requeues 0) rate 9763Kbit 20341pps backlog 4320b 72p requeues 0 qdisc netem 8004: parent 1:3 limit 100000 delay 3.0ms Sent 238583840 bytes 3975172 pkt (dropped 0, overlimits 0 requeues 0) rate 9752Kbit 20316pps backlog 3360b 56p requeues 0 qdisc netem 8005: parent 1:4 limit 100000 delay 3.0ms Sent 238849458 bytes 3980058 pkt (dropped 0, overlimits 0 requeues 0) rate 9792Kbit 20392pps backlog 3720b 62p requeues 0 qdisc netem 8006: parent 1:5 limit 100000 delay 3.0ms Sent 238423191 bytes 3973198 pkt (dropped 0, overlimits 0 requeues 0) rate 9729Kbit 20268pps backlog 4020b 67p requeues 0 qdisc netem 8007: parent 1:6 limit 100000 delay 3.0ms Sent 238417904 bytes 3972338 pkt (dropped 0, overlimits 0 requeues 0) rate 9733Kbit 20277pps backlog 3Kb 51p requeues 0 qdisc netem 8008: parent 1:7 limit 100000 delay 3.0ms Sent 239878967 bytes 3976960 pkt (dropped 0, overlimits 0 requeues 0) rate 9801Kbit 20417pps backlog 3420b 57p requeues 0 qdisc netem 8009: parent 1:8 limit 100000 delay 3.0ms Sent 238464411 bytes 3973838 pkt (dropped 0, overlimits 0 requeues 0) rate 9765Kbit 20344pps backlog 3540b 59p requeues 0
On Mon, Jul 6, 2015 at 4:56 PM, Eric Dumazet <eduma...@google.com> wrote: > On Mon, Jul 6, 2015 at 2:53 PM, Jamal Hadi Salim <j...@mojatatu.com> wrote: > >> cant wait for the multi queue ifb. >> > > Yeah, me too ;) > > Do not try this on a production host : > > ip link add ifb10 numtxqueues 1000000 type ifb > > [284151.950695] kernel BUG at /build/buildd/linux-3.13.0/net/core/dev.c:5868! > [284151.950762] invalid opcode: 0000 [#1] SMP > [284151.950779] Modules linked in: ifb uvcvideo videobuf2_vmalloc > videobuf2_memops videobuf2_core videodev e1000e ptp pps_core ctr ccm > sch_codel sch_htb tcp_diag inet_diag nfnetlink_log nfnetlink xt_recent > arc4 iwldvm mac80211 ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 > xt_hl ip6t_rt ipt_REJECT xt_LOG snd_hda_codec_hdmi > snd_hda_codec_realtek ipt_ULOG xt_limit xt_tcpudp snd_hda_intel > snd_hda_codec nf_conntrack_ipv4 nf_defrag_ipv4 snd_hwdep xt_addrtype > snd_pcm xt_owner xt_conntrack ip6table_filter thinkpad_acpi > snd_page_alloc ip6_tables nvram xt_state xt_helper nf_nat_tftp > nf_conntrack_tftp nf_nat_irc snd_seq_midi nf_conntrack_irc > snd_seq_midi_event nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack > iptable_filter snd_rawmidi ip_tables x_tables snd_seq snd_seq_device > intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp btusb > kvm_intel iwlwifi kvm snd_timer cfg80211 rfcomm bnep joydev serio_raw > bluetooth snd parport_pc wmi ppdev mac_hid mei_me lpc_ich shpchp mei > lp soundcore parport btrfs xor raid6_pq libcrc32c dm_crypt > crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel > aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ahci psmouse > i915 libahci sdhci_pci sdhci i2c_algo_bit drm_kms_helper video drm > [last unloaded: videobuf2_memops] > [284151.968991] CPU: 3 PID: 1298 Comm: ip Tainted: G W > 3.13.0-55-generic #94-Ubuntu > [284151.972108] Hardware name: LENOVO 2429CY7/2429CY7, BIOS G4ET94WW > (2.54 ) 05/23/2013 > [284151.973847] task: ffff8800a3e6b000 ti: ffff8801ba4da000 task.ti: > ffff8801ba4da000 > [284151.975993] RIP: 0010:[<ffffffff8162b5b2>] [<ffffffff8162b5b2>] > alloc_netdev_mqs+0x392/0x3c0 > [284151.979497] RSP: 0018:ffff8801ba4db870 EFLAGS: 00010206 > [284151.982916] RAX: 00000000000f4240 RBX: ffff8804082a3000 RCX: > 0000000000000000 > [284151.986433] RDX: 0000000000000000 RSI: 0000000000000000 RDI: > ffff8801ba4db7e0 > [284151.989907] RBP: ffff8801ba4db8a0 R08: 00000000a9d3373c R09: > ffff8801ba4db7d6 > [284151.993381] R10: 00000000323f6b16 R11: 000000002c647ed6 R12: > 00000000000f423f > [284151.996862] R13: 0000000000000001 R14: ffff8801ba4dba70 R15: > 000000001312d000 > [284152.000335] FS: 00007efdbf71f740(0000) GS:ffff88041e2c0000(0000) > knlGS:0000000000000000 > [284152.003865] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [284152.007382] CR2: 00007ffd2acd1f88 CR3: 00000001b39cc000 CR4: > 00000000001407e0 > [284152.010870] Stack: > [284152.014321] 000000000000091f ffff88040431e800 ffff8801ba4db958 > ffffffffa024c020 > [284152.017798] fffffffffffffff4 ffffffff81cdab40 ffff8801ba4db8e8 > ffffffff816357bb > [284152.021287] ffffffff8189d340 ffff8801ba4db8f8 ffff88040431e800 > ffffffff81cdab40 > [284152.024770] Call Trace: > [284152.028167] [<ffffffff816357bb>] rtnl_create_link+0x5b/0x1c0 > [284152.031558] [<ffffffff816396aa>] rtnl_newlink+0x4ba/0x610 > [284152.034960] [<ffffffff8163932f>] ? rtnl_newlink+0x13f/0x610 > [284152.038301] [<ffffffff81635e85>] rtnetlink_rcv_msg+0x95/0x250 > [284152.041605] [<ffffffff8161765e>] ? __alloc_skb+0x7e/0x2b0 > [284152.044552] [<ffffffff81635df0>] ? rtnetlink_rcv+0x30/0x30 > [284152.047950] [<ffffffff81654479>] netlink_rcv_skb+0xa9/0xc0 > [284152.051202] [<ffffffff81635de8>] rtnetlink_rcv+0x28/0x30 > [284152.054429] [<ffffffff81653b65>] netlink_unicast+0xd5/0x1b0 > [284152.057644] [<ffffffff81653f4e>] netlink_sendmsg+0x30e/0x680 > [284152.060847] [<ffffffff8160e08b>] sock_sendmsg+0x8b/0xc0 > [284152.064088] [<ffffffff8160ddba>] ? move_addr_to_kernel.part.14+0x5a/0x60 > [284152.067276] [<ffffffff8160ebb1>] ? move_addr_to_kernel+0x21/0x30 > [284152.070458] [<ffffffff8160e499>] ___sys_sendmsg+0x389/0x3a0 > [284152.073628] [<ffffffff816530ed>] ? netlink_insert+0x14d/0x240 > [284152.076764] [<ffffffff8172f334>] ? __do_page_fault+0x204/0x570 > [284152.079919] [<ffffffff810fd1fd>] ? audit_filter_rules.isra.7+0x77d/0xf20 > [284152.083061] [<ffffffff8160f282>] __sys_sendmsg+0x42/0x80 > [284152.086180] [<ffffffff8160f2d2>] SyS_sendmsg+0x12/0x20 > [284152.089268] [<ffffffff81733d5d>] system_call_fastpath+0x1a/0x1f -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
