NetBSD Problem Report #49973
From www@NetBSD.org Mon Jun 15 00:32:32 2015
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by mollari.NetBSD.org (Postfix) with ESMTPS id C5E2BA6567
for <gnats-bugs@gnats.NetBSD.org>; Mon, 15 Jun 2015 00:32:31 +0000 (UTC)
Message-Id: <20150615003229.E8F75A65C0@mollari.NetBSD.org>
Date: Mon, 15 Jun 2015 00:32:29 +0000 (UTC)
From: pr@i3enedek.neomailbox.net
Reply-To: pr@i3enedek.neomailbox.net
To: gnats-bugs@NetBSD.org
Subject: odd swapping on idle system
X-Send-Pr-Version: www-1.0
>Number: 49973
>Category: kern
>Synopsis: odd swapping on idle system
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Mon Jun 15 00:35:01 +0000 2015
>Last-Modified: Mon Oct 17 01:20:00 +0000 2016
>Originator: Ben Gergely
>Release: NetBSD 7.99.1
>Organization:
>Environment:
NetBSD 7.99.18 i386
>Description:
On a mostly Idle (idle apart from the xcalls) machine this occurs:
08 threads: 9 idle, 1 runnable, 95 sleeping, 1 stopped, 2 on CPU
CPU0 states: 0.0% user, 0.0% nice, 36.3% system, 0.2% interrupt, 63.5% idle
CPU1 states: 0.4% user, 0.0% nice, 50.3% system, 0.0% interrupt, 49.3% idle
Memory: 725M Act, 700M Inact, 2500K Wired, 32M Exec, 1263M File, 1202M Free
Swap: 1024M Total, 1024M Free
PID LID USERNAME PRI STATE TIME WCPU CPU NAME COMMAND
0 63 root 126 RUN/0 106:08 41.70% 41.70% pgdaemon [system]
0 7 root 127 xcall/0 50:14 27.54% 27.54% xcall/0 [system]
0 22 root 127 xcall/1 59:42 15.38% 15.38% xcall/1 [system]
#pstat -T
338/3404 files
110592 vnodes
0/2097585 blocks swap space
Removing the swap devices does not affect this.
>How-To-Repeat:
unknown
>Fix:
unknown
>Audit-Trail:
From: Martin Husemann <martin@duskware.de>
To: gnats-bugs@NetBSD.org
Cc:
Subject: Re: kern/49973: odd swapping on idle system
Date: Mon, 15 Jun 2015 09:45:49 +0200
There is nothing abnormal in that output that I can spot - what issue
do you see?
Martin
From: Benedek Gergely <i3enedek@neomailbox.net>
To: gnats-bugs@NetBSD.org
Cc:
Subject: Re: kern/49973: odd swapping on idle system
Date: Mon, 15 Jun 2015 10:32:08 +0100
--WhfpMioaduB5tiZL
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
Well I'm not the first to think it's abnormal:
https://mail-index.netbsd.org/current-users/2012/08/01/msg020751.html
I'd understand if there were no free memory.
Cheers,
Ben
On Mon, Jun 15, 2015 at 07:50:01AM +0000, Martin Husemann wrote:
> The following reply was made to PR kern/49973; it has been noted by GNATS.
>=20
> From: Martin Husemann <martin@duskware.de>
> To: gnats-bugs@NetBSD.org
> Cc:=20
> Subject: Re: kern/49973: odd swapping on idle system
> Date: Mon, 15 Jun 2015 09:45:49 +0200
>=20
> There is nothing abnormal in that output that I can spot - what issue
> do you see?
> =20
> Martin
> =20
>=20
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From: Martin Husemann <martin@duskware.de>
To: gnats-bugs@NetBSD.org
Cc:
Subject: Re: kern/49973: odd swapping on idle system
Date: Mon, 15 Jun 2015 11:49:27 +0200
There is no swapping going on in your system (as the pstat output shows).
So the issue you are complaining about is the amount of CPU used by the
pgdaemon thread?
Martin
From: Benedek Gergely <i3enedek@neomailbox.net>
To: gnats-bugs@NetBSD.org
Cc:
Subject: Re: kern/49973: odd swapping on idle system
Date: Mon, 15 Jun 2015 11:45:16 +0100
> From: Martin Husemann <martin@duskware.de>
> To: gnats-bugs@NetBSD.org
> Cc:
> Subject: Re: kern/49973: odd swapping on idle system
> Date: Mon, 15 Jun 2015 11:49:27 +0200
> So the issue you are complaining about is the amount of CPU used by the
> pgdaemon thread?
>
Yes. Is it supposed to be doing that, is it actually doing something? I don't know, hence I'm asking.
It isn't happening on 6.1.5 nor on a system with higher memory constraints also on 6.1.5.
It seems odd that an idle/lightly loaded system would chew up so much cpu time.
Cheers,
Ben
From: David Holland <dholland-bugs@netbsd.org>
To: gnats-bugs@netbsd.org
Cc:
Subject: Re: kern/49973: odd swapping on idle system
Date: Mon, 17 Oct 2016 00:55:16 +0000
not sent to gnats (ages ago):
------
From: Lars Heidieker <lars@heidieker.de>
To: pr@i3enedek.neomailbox.net
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org, netbsd-bugs@netbsd.org,
pr@i3enedek.neomailbox.net
Subject: Re: kern/49973: odd swapping on idle system
Date: Mon, 15 Jun 2015 19:50:02 +0200
On Mon, 15 Jun 2015 00:35:01 +0000 (UTC)
pr@i3enedek.neomailbox.net wrote:
> >Number: 49973
> >Category: kern
> >Synopsis: odd swapping on idle system
> >Confidential: no
> >Severity: non-critical
> >Priority: low
> >Responsible: kern-bug-people
> >State: open
> >Class: sw-bug
> >Submitter-Id: net
> >Arrival-Date: Mon Jun 15 00:35:01 +0000 2015
> >Originator: Ben Gergely
> >Release: NetBSD 7.99.1
> >Organization:
> >Environment:
> NetBSD 7.99.18 i386
> >Description:
> On a mostly Idle (idle apart from the xcalls) machine this occurs:
>
> 08 threads: 9 idle, 1 runnable, 95 sleeping, 1 stopped, 2 on CPU
> CPU0 states: 0.0% user, 0.0% nice, 36.3% system, 0.2% interrupt,
> 63.5% idle CPU1 states: 0.4% user, 0.0% nice, 50.3% system, 0.0%
> interrupt, 49.3% idle Memory: 725M Act, 700M Inact, 2500K Wired, 32M
> Exec, 1263M File, 1202M Free Swap: 1024M Total, 1024M Free
>
> PID LID USERNAME PRI STATE TIME WCPU CPU NAME
> COMMAND 0 63 root 126 RUN/0 106:08 41.70% 41.70% pgdaemon
> [system] 0 7 root 127 xcall/0 50:14 27.54% 27.54% xcall/0
> [system] 0 22 root 127 xcall/1 59:42 15.38% 15.38% xcall/1
> [system]
>
> #pstat -T
> 338/3404 files
> 110592 vnodes
> 0/2097585 blocks swap space
>
an output of vmstat -mv might help
Lars
From: David Holland <dholland-bugs@netbsd.org>
To: gnats-bugs@netbsd.org
Cc:
Subject: Re: kern/49973: odd swapping on idle system
Date: Mon, 17 Oct 2016 01:15:54 +0000
also not sent to gnats (a couple of days after ages ago)
------
From: pr@i3enedek.neomailbox.net
To: gnats-admin@netbsd.org
Subject: Re: kern/49973: odd swapping on idle system
Date: Wed, 17 Jun 2015 19:37:47 +0100
vmstat output follows:
procs memory
ru dw pw sl total-v active-v active-r vm-sh avm-sh rm-sh arm-sh free
2 0 0 16 495345 208978 208978 0 0 0 0 273977
Memory resource pool statistics
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
aio_jobs_pool 80 0 0 0 0 0 0 0 0 inf 0
aio_lio_pool 24 0 0 0 0 0 0 0 0 inf 0
amappl 48 12559 0 11638 48 10 38 48 0 inf 0
anonpl 16 944564 0 925668 1661 1016 645 1346 0 inf 0
ataspl 56 2171133 0 2171133 27 26 1 1 0 inf 1
biopl 180 5458 0 5458 89 88 1 40 0 inf 1
brtpl 36 0 0 0 0 0 0 0 0 inf 0
buf16k 16384 137164 0 135620 9855 9413 442 2641 1 1 0
buf1k 1024 2 0 2 1 0 1 1 1 1 1
buf2k 2048 249354 0 248388 2641 2589 52 1262 1 1 0
buf32k 32768 0 0 0 1 0 1 1 1 1 1
buf4k 4096 5337 0 5310 129 125 4 27 1 1 0
buf512b 512 0 0 0 1 0 1 1 1 1 1
buf64k 65536 0 0 0 1 0 1 1 1 1 1
buf8k 8192 2690 0 2671 143 140 3 28 1 1 0
bufpl 180 93063 0 90507 2791 1705 1086 2142 0 inf 0
ccdbuf 196 0 0 0 0 0 0 0 0 inf 0
cd9660nopl 140 0 0 0 0 0 0 0 0 inf 0
cryptkop 184 0 0 0 0 0 0 0 0 inf 0
cryptodesc 56 0 0 0 0 0 0 0 0 inf 0
cryptop 176 0 0 0 0 0 0 0 0 inf 0
csepl 136 0 0 0 12 0 12 12 12 inf 12
cwdi 64 525 0 486 2 1 1 2 0 inf 0
dirhepl 28 0 0 0 0 0 0 0 0 259 0
dirhpl 156 0 0 0 0 0 0 0 0 inf 0
ehcixfer 204 2 0 1 1 0 1 1 0 inf 0
execargs 262144 79656 0 79656 48 47 1 2 0 16 1
ext2dinopl 128 0 0 0 0 0 0 0 0 inf 0
ext2fsinopl 164 0 0 0 0 0 0 0 0 inf 0
extent 20 32 0 23 1 0 1 1 0 inf 0
fcrpl 104 5 0 5 2 0 2 2 2 inf 2
fdfile 64 3801 0 3361 24 7 17 22 0 inf 0
ffsdino1 128 95577 0 94867 3071 3047 24 1527 0 inf 0
ffsdino2 256 173932 0 64943 8159 0 8159 8159 0 inf 0
ffsino 164 173167 0 63468 5441 0 5441 5441 0 inf 0
file 64 3212 0 3006 15 6 9 15 0 inf 0
filedesc 704 546 0 507 24 11 13 22 0 inf 0
igmppl 20 0 0 0 0 0 0 0 0 inf 0
in6pcbpl 156 969 0 963 1 0 1 1 0 inf 0
inmltpl 32 2 0 0 1 0 1 1 0 inf 0
inpcbpl 116 11995 0 11987 27 26 1 15 0 inf 0
ipfrenpl 64 0 0 0 0 0 0 0 0 inf 0
kcpuset 64 922 0 824 4 1 3 4 0 inf 0
kcredpl 192 1833 0 1658 32 20 12 32 0 inf 0
kmem-1024 1024 13750 0 13320 2335 2174 161 1060 0 inf 0
kmem-112 112 1594 0 1366 9 0 9 9 0 inf 0
kmem-128 128 3029 0 2915 12 7 5 11 0 inf 0
kmem-16 16 56842 0 56789 6 2 4 5 0 inf 0
kmem-160 160 6113 0 5639 117 83 34 88 0 inf 0
kmem-192 192 2251 0 2164 20 15 5 12 0 inf 0
kmem-2048 2048 2050 0 1918 146 74 72 109 0 inf 0
kmem-224 224 2146 0 2030 49 42 7 30 0 inf 0
kmem-24 24 44174 0 42607 23 2 21 23 0 inf 0
kmem-256 256 1817 0 1800 17 15 2 8 0 inf 0
kmem-32 32 6213500 0 11258 48456 0 48456 48456 0 inf 0
kmem-320 320 3746 0 3562 91 70 21 80 0 inf 0
kmem-384 384 1852 0 1723 34 18 16 34 0 inf 0
kmem-40 40 81333 0 78731 102 45 57 101 0 inf 0
kmem-4096 4096 7705 0 7579 362 235 127 193 0 inf 1
kmem-448 448 1591 0 1580 52 48 4 33 0 inf 0
kmem-48 48 57884 0 56846 92 40 52 90 0 inf 0
kmem-512 512 1095 0 1060 27 17 10 19 0 inf 0
kmem-56 56 53971 0 53750 20 5 15 19 0 inf 0
kmem-64 64 20466 0 17391 57 4 53 57 0 inf 0
kmem-768 768 55821 0 55666 617 564 53 268 0 inf 0
kmem-8 8 0 0 0 0 0 0 0 0 inf 0
kmem-80 80 16482 0 14442 95 16 79 95 0 inf 0
kmem-96 96 82043 0 79961 112 27 85 111 0 inf 0
ksiginfo 48 674 0 674 8 7 1 1 0 inf 1
ktrace 96 0 0 0 0 0 0 0 0 inf 0
kva-12288 12288 237 0 228 4 3 1 3 0 inf 0
kva-16384 16384 111 0 108 5 4 1 3 0 inf 0
kva-20480 20480 888 0 886 23 21 2 9 0 inf 0
kva-24576 24576 23 0 19 2 1 1 2 0 inf 0
kva-28672 28672 11 0 10 1 0 1 1 0 inf 0
kva-32768 32768 5 0 5 4 4 0 1 0 inf 0
kva-36864 36864 387 0 387 36 36 0 5 0 inf 0
kva-4096 4096 87633 0 9406 1279 44 1235 1235 0 inf 0
kva-40960 40960 0 0 0 0 0 0 0 0 inf 0
kva-49152 49152 17 0 9 4 2 2 3 0 inf 0
kva-65536 65536 260 0 255 27 25 2 9 0 inf 0
kva-8192 8192 124 0 115 3 2 1 2 0 inf 0
l2cap_pdu 24 0 0 0 0 0 0 0 0 inf 0
l2cap_req 60 0 0 0 0 0 0 0 0 inf 0
lfsdinopl 128 0 0 0 0 0 0 0 0 inf 0
lfsinoextpl 104 0 0 0 0 0 0 0 0 inf 0
lfsinopl 156 0 0 0 0 0 0 0 0 inf 0
lfslbnpool 16 0 0 0 0 0 0 0 0 inf 0
lockf 64 1490 0 1486 1 0 1 1 0 inf 0
lwppl 672 831 0 734 63 43 20 41 0 inf 0
mbpl 256 38865 0 38544 100 78 22 62 1 inf 1
mclpl 2048 6437 0 6181 688 556 132 214 4 8192 4
mqmsgpl 1024 0 0 0 0 0 0 0 0 inf 0
msdosfhpl 28 0 0 0 0 0 0 0 0 inf 0
msdosnopl 120 0 0 0 0 0 0 0 0 inf 0
mutex 64 281877 0 170667 2103 0 2103 2103 0 inf 0
ncache 128 168724 0 93013 3569 0 3569 3569 0 inf 0
nfsnodepl 208 0 0 0 0 0 0 0 0 inf 0
nfsreqcachepl 56 0 0 0 0 0 0 0 0 inf 0
nfsrvdescpl 184 0 0 0 0 0 0 0 0 inf 0
nfsvapl 136 0 0 0 0 0 0 0 0 inf 0
npfconpl 192 0 0 0 0 0 0 0 0 inf 0
npfnatpl 64 0 0 0 0 0 0 0 0 inf 0
npftblpl 64 0 0 0 0 0 0 0 0 inf 0
pcache 512 90 0 4 11 0 11 11 0 inf 0
pcachecpu 64 94 0 0 2 0 2 2 0 inf 0
pcglarge 512 40665 0 40663 2015 2013 2 758 0 inf 1
pcgnormal 128 285120 0 285113 2095 2094 1 1276 0 inf 0
pdict128 156 0 0 0 0 0 0 0 0 inf 0
pdict16 44 351 0 290 1 0 1 1 0 inf 0
pdict32 60 107 0 94 1 0 1 1 0 inf 0
pdppl 4096 556 0 517 273 234 39 107 0 inf 0
pewpl 12 8 0 8 1 0 1 1 1 1 1
phpool-0 32 28242 0 18627 119 3 116 119 0 inf 0
phpool-1024 156 0 0 0 0 0 0 0 0 inf 0
phpool-128 44 48670 0 90 529 0 529 529 0 inf 0
phpool-2048 284 0 0 0 0 0 0 0 0 inf 0
phpool-256 60 29 0 4 1 0 1 1 0 inf 0
phpool-4096 540 0 0 0 0 0 0 0 0 inf 0
phpool-512 92 0 0 0 0 0 0 0 0 inf 0
phpool-64 36 2073 0 729 14 0 14 14 0 inf 0
piperd 192 249 0 243 3 1 2 3 0 inf 0
pipewr 192 258 0 251 4 2 2 3 0 inf 0
plimitpl 216 154 0 144 5 3 2 4 0 inf 0
pmappl 120 469 0 430 4 2 2 4 0 inf 0
pnbufpl 1024 4865 0 4863 67 65 2 9 0 inf 1
procpl 432 414 0 371 14 8 6 13 0 inf 0
proparay 32 112 0 2 1 0 1 1 0 inf 0
propdata 20 0 0 0 0 0 0 0 0 inf 0
propdict 32 532 0 182 3 0 3 3 0 inf 0
propnmbr 32 67 0 14 1 0 1 1 0 inf 0
propstng 20 971 0 410 3 0 3 3 0 inf 0
pstatspl 268 422 0 379 9 5 4 8 0 inf 0
ptimerpl 164 84 0 72 1 0 1 1 0 inf 0
ptimerspl 140 84 0 72 1 0 1 1 0 inf 0
puffpnpl 156 0 0 0 0 0 0 0 0 inf 0
puffprkl 60 0 0 0 0 0 0 0 0 inf 0
puffvapl 136 0 0 0 0 0 0 0 0 inf 0
pvpl 20 343390 0 322142 448 108 340 438 0 inf 0
ractx 24 166119 0 73326 727 104 623 628 0 inf 0
rfcomm_credit 12 0 0 0 0 0 0 0 0 inf 0
rndctx 12 21 0 21 5 5 0 1 0 inf 0
rndsample 528 952 0 928 8 3 5 8 0 586 0
rndtemp 512 21 0 21 5 5 0 1 0 inf 0
rtentpl 184 537 0 498 2 0 2 2 0 inf 0
rttmrpl 36 0 0 0 0 0 0 0 0 inf 0
rwlock 64 0 0 0 0 0 0 0 0 inf 0
sackholepl 20 15 0 15 5 5 0 1 0 inf 0
sigacts 2056 492 0 453 271 232 39 107 0 inf 0
socket 332 1405 0 1290 61 49 12 52 0 inf 0
swp vnd 184 0 0 0 0 0 0 0 0 inf 0
swp vnx 20 0 0 0 0 0 0 0 0 inf 0
synpl 188 4804 0 4804 13 13 0 2 0 inf 0
tcpcbpl 528 10964 0 10955 143 141 2 71 0 inf 0
tcpipqepl 44 6550 0 6550 15 15 0 1 0 inf 0
tmpfs_dirent 24 3108 0 3101 1 0 1 1 0 inf 0
tmpfs_node 140 3109 0 3100 1 0 1 1 0 inf 0
tstilepl 52 809 0 712 4 1 3 4 0 inf 0
uaoeltpl 84 0 0 0 0 0 0 0 0 inf 0
uarea 12288 819 0 722 637 540 97 246 0 inf 0
ufsdir 264 118 0 118 11 11 0 1 0 inf 0
ufsdq 60 0 0 0 0 0 0 0 0 inf 0
uhcixfer 204 2 0 1 1 0 1 1 0 inf 0
uhcixfer 204 3 0 2 1 0 1 1 0 inf 0
uhcixfer 204 2 0 1 1 0 1 1 0 inf 0
uhcixfer 204 3 0 2 1 0 1 1 0 inf 0
ulfsdir 264 0 0 0 0 0 0 0 0 inf 0
vcachepl 20 169468 0 59718 644 0 644 644 0 inf 0
vmembt 28 53015 0 46509 69 0 69 69 0 inf 0
vmmpepl 88 57983 0 55946 138 13 125 134 0 inf 0
vmsppl 212 495 0 456 7 2 5 6 0 inf 0
vnodepl 176 171282 0 61515 5679 0 5679 5679 0 inf 0
wapblentrypl 20 13355 0 13355 38 37 1 1 0 inf 1
wapblinopl 20 446801 0 446801 13 13 0 1 0 inf 0
Totals 13357677 0 6225608109151 28334 80817
In use 313927K, total allocated 354584K; utilization 88.5%
(Contact us)
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