kern/166071: High CPU Utilization on HylaFAX processes
Ruan Chunping
ruanchunping at gmail.com
Tue Nov 5 12:40:03 UTC 2013
The following reply was made to PR kern/166071; it has been noted by GNATS.
From: Ruan Chunping <ruanchunping at gmail.com>
To: bug-followup at freebsd.org, rnoll.bsd at gmail.com
Cc:
Subject: Re: kern/166071: High CPU Utilization on HylaFAX processes
Date: Tue, 5 Nov 2013 20:31:30 +0800
--001a11332dfc8f536e04ea6d3793
Content-Type: text/plain; charset=UTF-8
more info here:
$ sudo fstat -v -p 63466
USER CMD PID FD MOUNT INUM MODE SZ|DV R/W
uucp faxq 63466 text /usr 1630604 -r-sr-xr-x 274064 r
uucp faxq 63466 wd /var 1381 drwxr-xr-x 20 r
uucp faxq 63466 root / 4 drwxr-xr-x 26 r
uucp faxq 63466 0 /dev 7 crw-rw-rw- null rw
uucp faxq 63466 1 /dev 7 crw-rw-rw- null rw
uucp faxq 63466 2 /dev 7 crw-rw-rw- null rw
uucp faxq 63466 3 /dev 7 crw-rw-rw- null rw
uucp faxq 63466 4 /var 50545 prw------- 0 r
uucp faxq 63466 5* local dgram fffff80039013d20 <->
fffff80004ef7a50
FD 4, it's inode is 50545
$ ls -i /var/spool/hylafax/FIFO
50545 /var/spool/hylafax/FIFO
$ file /var/spool/hylafax/FIFO
/var/spool/hylafax/FIFO: fifo (named pipe)
so ,is it a bug about /usr/src/sys/fs/fifofs/fifo_vnops.c ?
On Tue, Nov 5, 2013 at 3:39 PM, Ruan Chunping <ruanchunping at gmail.com>wrote:
> Dear,
>
> I think the bug is not resovled.
>
> In my stable/10 amd64 , faxgetty and faxq cost too may cpu load.
>
> The problem is the same as Ryan Noll described.
>
> $uanem -a
> FreeBSD dev.***.com 10.0-BETA2 FreeBSD 10.0-BETA2 #0 r257377: Thu Oct 31
> 07:47:49 CST 2013 root at dev.***.com:/usr/obj/usr/src/sys/GENERIC_PF_ALTQ
> amd64
>
> $ pkg info|grep hylafax
> hylafax-6.0.6 Fax software
>
>
>
> $ ps -auxww|grep faxq
> uucp 63466 63.1 0.1 35224 2836 - Rs 2:55PM 25:19.28
> /usr/local/sbin/faxq
> $ sudo ktrace -t c -p 63466
> $ sudo ktrace -C
> $ sudo kdump -R
> 63466 faxq 1383636856.659275 CALL read(0x4,0x7fffffffcfa0,0x7ff)
> 63466 faxq 0.000257 RET read 0
> 63466 faxq 0.000055 CALL
> select(0x5,0x7fffffffd950,0x7fffffffd8d0,0x7fffffffd850,0)
> 63466 faxq 0.000031 RET select 1
> 63466 faxq 0.000026 CALL read(0x4,0x7fffffffcfa0,0x7ff)
> 63466 faxq 0.000024 RET read 0
> 63466 faxq 0.000041 CALL
> select(0x5,0x7fffffffd950,0x7fffffffd8d0,0x7fffffffd850,0)
> 63466 faxq 0.000027 RET select 1
> 63466 faxq 0.000025 CALL read(0x4,0x7fffffffcfa0,0x7ff)
> 63466 faxq 0.000024 RET read 0
> 63466 faxq 0.000022 CALL
> select(0x5,0x7fffffffd950,0x7fffffffd8d0,0x7fffffffd850,0)
> 63466 faxq 0.000023 RET select 1
> 63466 faxq 0.000037 CALL read(0x4,0x7fffffffcfa0,0x7ff)
> 63466 faxq 0.000025 RET read 0
> 63466 faxq 0.000024 CALL
> select(0x5,0x7fffffffd950,0x7fffffffd8d0,0x7fffffffd850,0)
> 63466 faxq 0.000024 RET select 1
> 63466 faxq 0.000023 CALL read(0x4,0x7fffffffcfa0,0x7ff)
> 63466 faxq 0.000023 RET read 0
> ========== more ===========
>
>
> and , the /var/spool/hylafax/ is on zfs
> $ mount
> zroot on / (zfs, local, nfsv4acls)
> devfs on /dev (devfs, local, multilabel)
> zroot/data on /data (zfs, NFS exported, local, nfsv4acls)
> zroot/data/ftp on /data/ftp (zfs, NFS exported, local, noatime, nfsv4acls)
> zroot/data/mysql on /data/mysql (zfs, local, nfsv4acls)
> zroot/home on /home (zfs, local, nfsv4acls)
> zroot/tmp on /tmp (zfs, local, nfsv4acls)
> zroot/usr on /usr (zfs, local, nfsv4acls)
> zroot/var on /var (zfs, local, nfsv4acls)
>
> $ zfs get all zroot/var
> NAME PROPERTY VALUE SOURCE
> zroot/var type filesystem -
> zroot/var creation Wed Oct 30 22:42 2013 -
> zroot/var used 2.16G -
> zroot/var available 410G -
> zroot/var referenced 1.84G -
> zroot/var compressratio 1.00x -
> zroot/var mounted yes -
> zroot/var quota none default
> zroot/var reservation none default
> zroot/var recordsize 128K default
> zroot/var mountpoint /var local
> zroot/var sharenfs off default
> zroot/var checksum on default
> zroot/var compression off default
> zroot/var atime on default
> zroot/var devices on default
> zroot/var exec on default
> zroot/var setuid on default
> zroot/var readonly off default
> zroot/var jailed off default
> zroot/var snapdir hidden default
> zroot/var aclmode discard default
> zroot/var aclinherit restricted default
> zroot/var canmount on default
> zroot/var xattr off temporary
> zroot/var copies 1 default
> zroot/var version 5 -
> zroot/var utf8only off -
> zroot/var normalization none -
> zroot/var casesensitivity sensitive -
> zroot/var vscan off default
> zroot/var nbmand off default
> zroot/var sharesmb off default
> zroot/var refquota none default
> zroot/var refreservation none default
> zroot/var primarycache all default
> zroot/var secondarycache all default
> zroot/var usedbysnapshots 329M -
> zroot/var usedbydataset 1.84G -
> zroot/var usedbychildren 0 -
> zroot/var usedbyrefreservation 0 -
> zroot/var logbias latency default
> zroot/var dedup off default
> zroot/var mlslabel -
> zroot/var sync standard default
> zroot/var refcompressratio 1.00x -
> zroot/var written 39.2M -
> zroot/var logicalused 2.05G -
> zroot/var logicalreferenced 1.80G -
>
>
>
--001a11332dfc8f536e04ea6d3793
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:'cou=
rier new',monospace">more info here:</div><div class=3D"gmail_default" =
style=3D"font-family:'courier new',monospace"><br></div><div class=
=3D"gmail_default">
<div class=3D"gmail_default"><font face=3D"courier new, monospace">$ sudo f=
stat -v -p=C2=A0</font><span style=3D"font-family:'courier new',mon=
ospace;font-size:13px">63466</span></div><div class=3D"gmail_default"><font=
face=3D"courier new, monospace">USER =C2=A0 =C2=A0 CMD =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0PID =C2=A0 FD MOUNT =C2=A0 =C2=A0 =C2=A0INUM MODE =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 SZ|DV R/W</font></div>
<div class=3D"gmail_default"><font face=3D"courier new, monospace">uucp =C2=
=A0 =C2=A0 faxq =C2=A0 =C2=A0 =C2=A0=C2=A0</font><span style=3D"font-family=
:'courier new',monospace;font-size:13px">63466</span><font face=3D"=
courier new, monospace">=C2=A0text /usr =C2=A0 =C2=A0 1630604 -r-sr-xr-x =
=C2=A0274064 =C2=A0r</font></div>
<div class=3D"gmail_default"><font face=3D"courier new, monospace">uucp =C2=
=A0 =C2=A0 faxq =C2=A0 =C2=A0 =C2=A0=C2=A0</font><span style=3D"font-family=
:'courier new',monospace;font-size:13px">63466</span><font face=3D"=
courier new, monospace">=C2=A0 =C2=A0wd /var =C2=A0 =C2=A0 =C2=A0 1381 drwx=
r-xr-x =C2=A0 =C2=A0 =C2=A020 =C2=A0r</font></div>
<div class=3D"gmail_default"><font face=3D"courier new, monospace">uucp =C2=
=A0 =C2=A0 faxq =C2=A0 =C2=A0 =C2=A0=C2=A0</font><span style=3D"font-family=
:'courier new',monospace;font-size:13px">63466</span><font face=3D"=
courier new, monospace">=C2=A0root / =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 4 drwxr-xr-x =C2=A0 =C2=A0 =C2=A026 =C2=A0r</font></div>
<div class=3D"gmail_default"><font face=3D"courier new, monospace">uucp =C2=
=A0 =C2=A0 faxq =C2=A0 =C2=A0 =C2=A0=C2=A0</font><span style=3D"font-family=
:'courier new',monospace;font-size:13px">63466</span><font face=3D"=
courier new, monospace">=C2=A0 =C2=A0 0 /dev =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A07 crw-rw-rw- =C2=A0 =C2=A0null rw</font></div>
<div class=3D"gmail_default"><font face=3D"courier new, monospace">uucp =C2=
=A0 =C2=A0 faxq =C2=A0 =C2=A0 =C2=A0=C2=A0</font><span style=3D"font-family=
:'courier new',monospace;font-size:13px">63466</span><font face=3D"=
courier new, monospace">=C2=A0 =C2=A0 1 /dev =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A07 crw-rw-rw- =C2=A0 =C2=A0null rw</font></div>
<div class=3D"gmail_default"><font face=3D"courier new, monospace">uucp =C2=
=A0 =C2=A0 faxq =C2=A0 =C2=A0 =C2=A0=C2=A0</font><span style=3D"font-family=
:'courier new',monospace;font-size:13px">63466</span><font face=3D"=
courier new, monospace">=C2=A0 =C2=A0 2 /dev =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A07 crw-rw-rw- =C2=A0 =C2=A0null rw</font></div>
<div class=3D"gmail_default"><font face=3D"courier new, monospace">uucp =C2=
=A0 =C2=A0 faxq =C2=A0 =C2=A0 =C2=A0=C2=A0</font><span style=3D"font-family=
:'courier new',monospace;font-size:13px">63466</span><font face=3D"=
courier new, monospace">=C2=A0 =C2=A0 3 /dev =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A07 crw-rw-rw- =C2=A0 =C2=A0null rw</font></div>
<div class=3D"gmail_default"><font face=3D"courier new, monospace">uucp =C2=
=A0 =C2=A0 faxq =C2=A0 =C2=A0 =C2=A0=C2=A0</font><span style=3D"font-family=
:'courier new',monospace;font-size:13px">63466</span><font face=3D"=
courier new, monospace">=C2=A0 =C2=A0 4 /var =C2=A0 =C2=A0 =C2=A050545 prw-=
------ =C2=A0 =C2=A0 =C2=A0 0 =C2=A0r</font></div>
<div class=3D"gmail_default"><font face=3D"courier new, monospace">uucp =C2=
=A0 =C2=A0 faxq =C2=A0 =C2=A0 =C2=A0=C2=A0</font><span style=3D"font-family=
:'courier new',monospace;font-size:13px">63466</span><font face=3D"=
courier new, monospace">=C2=A0 =C2=A0 5* local dgram fffff80039013d20 <-=
> fffff80004ef7a50</font></div>
<div style=3D"font-family:'courier new',monospace"><br></div><div s=
tyle=3D"font-family:'courier new',monospace">FD 4, it's inode i=
s 50545</div><div><div><font face=3D"courier new, monospace">$ ls -i /var/s=
pool/hylafax/FIFO</font></div>
<div><font face=3D"courier new, monospace">50545 /var/spool/hylafax/FIFO</f=
ont></div></div><div><font face=3D"courier new, monospace"><div>$ file /var=
/spool/hylafax/FIFO</div><div>/var/spool/hylafax/FIFO: fifo (named pipe)</d=
iv>
<div><br></div><div><br></div><div>so ,is it a bug about=C2=A0/usr/src/sys/=
fs/fifofs/fifo_vnops.c ?</div></font></div><div style=3D"font-family:'c=
ourier new',monospace"><br></div><div style=3D"font-family:'courier=
new',monospace">
<br></div></div></div><div class=3D"gmail_extra"><br><br><div class=3D"gmai=
l_quote">On Tue, Nov 5, 2013 at 3:39 PM, Ruan Chunping <span dir=3D"ltr">&l=
t;<a href=3D"mailto:ruanchunping at gmail.com" target=3D"_blank">ruanchunping@=
gmail.com</a>></span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div class=3D"gmail_default=
" style=3D"font-family:'courier new',monospace">Dear,</div><div cla=
ss=3D"gmail_default" style=3D"font-family:'courier new',monospace">
<br></div><div class=3D"gmail_default" style=3D"font-family:'courier ne=
w',monospace">
I think the bug is not resovled.</div><div class=3D"gmail_default" style=3D=
"font-family:'courier new',monospace"><br></div><div class=3D"gmail=
_default" style=3D"font-family:'courier new',monospace">In my stabl=
e/10 amd64 , faxgetty and faxq cost too may cpu load.</div>
<div class=3D"gmail_default" style=3D"font-family:'courier new',mon=
ospace"><br></div><div class=3D"gmail_default" style=3D"font-family:'co=
urier new',monospace">The problem is the same as=C2=A0<span style=3D"fo=
nt-size:12px;font-family:verdana,sans-serif">Ryan Noll</span><span style=3D=
"font-size:12px;font-family:verdana,sans-serif">=C2=A0=C2=A0</span>describe=
d.</div>
<div class=3D"gmail_default" style=3D"font-family:'courier new',mon=
ospace"><br></div><div class=3D"gmail_default" style=3D"font-family:'co=
urier new',monospace">$uanem -a</div><div class=3D"gmail_default"><font=
face=3D"courier new, monospace">FreeBSD dev.***.com 10.0-BETA2 FreeBSD 10.=
0-BETA2 #0 r257377: Thu Oct 31 07:47:49 CST 2013 =C2=A0 =C2=A0 root at dev.***=
.com:/usr/obj/usr/src/sys/GENERIC_PF_ALTQ =C2=A0amd64</font><br>
</div><div class=3D"gmail_default"><font face=3D"courier new, monospace"><b=
r></font></div><div class=3D"gmail_default"><font face=3D"courier new, mono=
space"><div class=3D"gmail_default">$ pkg info|grep hylafax</div><div class=
=3D"gmail_default">
hylafax-6.0.6 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0Fax software</div><div><br></div><div><br></div><div><br></div><div><div=
>$ ps -auxww|grep faxq</div><div>uucp =C2=A0 =C2=A063466 63.1 =C2=A00.1 =C2=
=A035224 =C2=A0 2836 =C2=A0- =C2=A0Rs =C2=A0 =C2=A02:55PM =C2=A0 25:19.28 /=
usr/local/sbin/faxq</div>
</div><div>$ sudo ktrace -t c -p 63466<br></div><div>$ sudo ktrace -C</div>=
<div><div>$ sudo kdump -R</div><div>=C2=A063466 faxq =C2=A0 =C2=A0 13836368=
56.659275 CALL =C2=A0read(0x4,0x7fffffffcfa0,0x7ff)</div><div>=C2=A063466 f=
axq =C2=A0 =C2=A0 0.000257 RET =C2=A0 read 0</div>
<div>=C2=A063466 faxq =C2=A0 =C2=A0 0.000055 CALL =C2=A0select(0x5,0x7fffff=
ffd950,0x7fffffffd8d0,0x7fffffffd850,0)</div><div>=C2=A063466 faxq =C2=A0 =
=C2=A0 0.000031 RET =C2=A0 select 1</div><div>=C2=A063466 faxq =C2=A0 =C2=
=A0 0.000026 CALL =C2=A0read(0x4,0x7fffffffcfa0,0x7ff)</div>
<div>=C2=A063466 faxq =C2=A0 =C2=A0 0.000024 RET =C2=A0 read 0</div><div>=
=C2=A063466 faxq =C2=A0 =C2=A0 0.000041 CALL =C2=A0select(0x5,0x7fffffffd95=
0,0x7fffffffd8d0,0x7fffffffd850,0)</div><div>=C2=A063466 faxq =C2=A0 =C2=A0=
0.000027 RET =C2=A0 select 1</div><div>=C2=A063466 faxq =C2=A0 =C2=A0 0.00=
0025 CALL =C2=A0read(0x4,0x7fffffffcfa0,0x7ff)</div>
<div>=C2=A063466 faxq =C2=A0 =C2=A0 0.000024 RET =C2=A0 read 0</div><div>=
=C2=A063466 faxq =C2=A0 =C2=A0 0.000022 CALL =C2=A0select(0x5,0x7fffffffd95=
0,0x7fffffffd8d0,0x7fffffffd850,0)</div><div>=C2=A063466 faxq =C2=A0 =C2=A0=
0.000023 RET =C2=A0 select 1</div><div>=C2=A063466 faxq =C2=A0 =C2=A0 0.00=
0037 CALL =C2=A0read(0x4,0x7fffffffcfa0,0x7ff)</div>
<div>=C2=A063466 faxq =C2=A0 =C2=A0 0.000025 RET =C2=A0 read 0</div><div>=
=C2=A063466 faxq =C2=A0 =C2=A0 0.000024 CALL =C2=A0select(0x5,0x7fffffffd95=
0,0x7fffffffd8d0,0x7fffffffd850,0)</div><div>=C2=A063466 faxq =C2=A0 =C2=A0=
0.000024 RET =C2=A0 select 1</div><div>=C2=A063466 faxq =C2=A0 =C2=A0 0.00=
0023 CALL =C2=A0read(0x4,0x7fffffffcfa0,0x7ff)</div>
<div>=C2=A063466 faxq =C2=A0 =C2=A0 0.000023 RET =C2=A0 read 0</div></div><=
div>=C2=A0=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D more =3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D</div><div><br></div><div><br></div><div>and , the /var/spool/hylafax=
/ is on zfs=C2=A0</div><div><div>$ mount</div><div>zroot on / (zfs, local, =
nfsv4acls)</div>
<div>devfs on /dev (devfs, local, multilabel)</div><div>zroot/data on /data=
(zfs, NFS exported, local, nfsv4acls)</div><div>zroot/data/ftp on /data/ft=
p (zfs, NFS exported, local, noatime, nfsv4acls)</div><div>zroot/data/mysql=
on /data/mysql (zfs, local, nfsv4acls)</div>
<div>zroot/home on /home (zfs, local, nfsv4acls)</div><div>zroot/tmp on /tm=
p (zfs, local, nfsv4acls)</div><div>zroot/usr on /usr (zfs, local, nfsv4acl=
s)</div><div>zroot/var on /var (zfs, local, nfsv4acls)</div></div><div>
<div><br></div><div>$ zfs get all zroot/var</div><div>NAME =C2=A0 =C2=A0 =
=C2=A0 PROPERTY =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0VALUE =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0SOURCE</div><div=
>zroot/var =C2=A0type =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0filesystem =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 -</div><div>=
zroot/var =C2=A0creation =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0We=
d Oct 30 22:42 2013 =C2=A0-</div>
<div>zroot/var =C2=A0used =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A02.16G =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0-</div><div>zroot/var =C2=A0available =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 410G =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 -</div><div>zroot/var =C2=A0referenced =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A01.84G =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0-</div><div>zroot/var =C2=A0compressratio =C2=A0 =C2=A0 =C2=A0 =C2=A0 1.=
00x =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0-</div>
<div>zroot/var =C2=A0mounted =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 yes =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0-</div><div>zroot/var =C2=A0quota =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 none =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
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br></div></font></div></div>
</blockquote></div><br></div>
--001a11332dfc8f536e04ea6d3793--
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