Date: Thu, 9 Nov 2017 13:21:23 -0700 From: Sean Bruno <sbruno@freebsd.org> To: freebsd-net@freebsd.org Subject: =?UTF-8?Q?Re:_Intel_I210_=28igb=29_sometimes_consume_all_CPU_on_not?= =?UTF-8?Q?-so-big_traffic_=e2=80=94_need_help!?= Message-ID: <6ea24412-a313-4aa2-e737-eebc02027067@freebsd.org> In-Reply-To: <8590fa5d-fd06-90c6-8d3e-34c155423720@FreeBSD.org> References: <8590fa5d-fd06-90c6-8d3e-34c155423720@FreeBSD.org>
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From: Sean Bruno <sbruno@freebsd.org>
To: freebsd-net@freebsd.org
Message-ID: <6ea24412-a313-4aa2-e737-eebc02027067@freebsd.org>
Subject: =?UTF-8?Q?Re:_Intel_I210_=28igb=29_sometimes_consume_all_CPU_on_not?=
=?UTF-8?Q?-so-big_traffic_=e2=80=94_need_help!?=
References: <8590fa5d-fd06-90c6-8d3e-34c155423720@FreeBSD.org>
In-Reply-To: <8590fa5d-fd06-90c6-8d3e-34c155423720@FreeBSD.org>
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On 11/09/17 13:17, Lev Serebryakov wrote:
>=20
> I still have problems with my E-1220v3 server equipped with Intel I210=
> adapter. It can not be loaded more than 100Mbit/s because it is
> connection to internet.
>=20
> But sometimes four interrupt threads "intr{irqXXX: igb0:que Y}" consum=
e
> 100% CPU. Interrupt rate is very modest:
>=20
> % vmstat -i
> interrupt total rate
> ...
> irq276: igb0:que 0 851899713 1193
> irq277: igb0:que 1 907338150 1271
> irq278: igb0:que 2 907538207 1271
> irq279: igb0:que 3 768217584 1076
> irq280: igb0:link 2 0
> %
>=20
> But CPU consumption is 90-100% per thread:
>=20
> PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
> 11 root -92 - 0K 544K CPU2 2 146:22 98.30% intr{irq278:
> igb0:que 2}
> 11 root -92 - 0K 544K WAIT 0 178:18 81.55% intr{irq276:
> igb0:que 0}
> 11 root -92 - 0K 544K WAIT 1 135:34 77.77% intr{irq277:
> igb0:que 1}
> 11 root -92 - 0K 544K CPU3 3 138:57 67.50% intr{irq279:
> igb0:que 3}
>=20
> procstat -ak looks suspicious:
>=20
> % sudo procstat -ak | grep igb0:que
> 11 100056 intr irq276: igb0:que 0 vm_page_scan_contig
> vm_phys_scan_contig vm_page_reclaim_contig kmem_alloc_contig
> mbuf_jumbo_alloc keg_alloc_slab keg_fetch_slab zone_fetch_slab
> zone_import zone_alloc_item uma_zalloc_arg m_getjcl igb_refresh_mbufs
> igb_rxeof igb_msix_que intr_event_execute_handlers ithread_loop fork_ex=
it
> 11 100058 intr irq277: igb0:que 1 mi_switch ithread_loop fork_exi=
t
> fork_trampoline
> 11 100060 intr irq278: igb0:que 2 mi_switch ithread_loop fork_exi=
t
> fork_trampoline
> 11 100062 intr irq279: igb0:que 3 mi_switch ithread_loop fork_exi=
t
> fork_trampoline
> %
>=20
Lev:
Can you dump the sysctl's for igb(sysctl -a | grep igb)? I assume this
is stable/11
sean
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