Date: Mon, 5 Apr 2010 22:36:19 +0200 (CEST) From: Petr Salinger <Petr.Salinger@seznam.cz> To: freebsd-hackers@freebsd.org, Kostik Belousov <kostikbel@gmail.com> Subject: Re: leak of the vnodes Message-ID: <Pine.LNX.4.62.1004052223210.23732@sci.felk.cvut.cz> In-Reply-To: <20100403210829.GW2415@deviant.kiev.zoral.com.ua> References: <Pine.LNX.4.62.1004021934550.15800@sci.felk.cvut.cz> <20100402190239.GL2415@deviant.kiev.zoral.com.ua> <Pine.LNX.4.62.1004022337010.16354@sci.felk.cvut.cz> <Pine.LNX.4.62.1004030915440.17349@sci.felk.cvut.cz> <20100403165238.GO2415@deviant.kiev.zoral.com.ua> <Pine.LNX.4.62.1004032106480.18491@sci.felk.cvut.cz> <20100403171945.GQ2415@deviant.kiev.zoral.com.ua> <Pine.LNX.4.62.1004032318210.18783@sci.felk.cvut.cz> <20100403210829.GW2415@deviant.kiev.zoral.com.ua>
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>>
>>>> BTW, the 7.3 seems be unaffected by this.
>>
>> Confirmed, the whole build of gcc-4.3 ends with
>>
>> kern.maxvnodes: 100000
>> kern.minvnodes: 25000
>> vfs.freevnodes: 22070
>> vfs.wantfreevnodes: 25000
>> vfs.numvnodes: 39907
>> debug.vnlru_nowhere: 0
>>
>> while for 8.0 kernel even 120000 in vfs.numvnodes does not suffice.
> BTW, can you check latest RELENG_8 kernel, or HEAD, for the issue ?
Both are affected, the ddb output bellow is from svn206142 for HEAD.
>> Are all vnodes in some mountpoint ? What pipes and sockets ?
> I do not quite understand the question.
>
> Pipes and sockets are not vnodes, and I want to see what type of
> filesystem (UFS or devfs) leaks.
I lowered max to get problem earlier
kern.maxvnodes: 40000
kern.minvnodes: 25000
vfs.freevnodes: 0
vfs.wantfreevnodes: 25000
vfs.numvnodes: 37934
debug.vnlru_nowhere: 83
I would expect that sum of mnt_nvnodelistsize should be vfs.numvnodes.
The sum is at about 3400, but the vfs.numvnodes is at about 38000.
Is my expectation correct ?
Petr
db> show mount
0xffffff0003939be0 /dev/ad0s2a on / (ufs)
0xffffff000393a000 devfs on /dev (devfs)
0xffffff00039398e8 linprocfs on /proc (linprocfs)
0xffffff0009b9d000 /dev/ad0s2d on /opt/sid/build (ufs)
db> show mount 0xffffff0003939be0
0xffffff0003939be0 /dev/ad0s2a on / (ufs)
mnt_flag = LOCAL, ROOTFS
mnt_kern_flag = EXTENDED_SHARED, MPSAFE, LOOKUP_SHARED
mnt_opt = rw, fstype, fspath, from, errmsg, noro
mnt_stat = { version=537068824 type=7 flags=0x0000000000005000
bsize=2048 iosize=16384 blocks=9233079 bfree=1720773 bavail=982127
files=2402302 ffree=2211006 syncwrites=0 asyncwrites=0 syncreads=0
asyncreads=0 namemax=255 owner=0 fsid=[1208030997, -638345611] }
mnt_cred = { uid=0 ruid=0 }
mnt_ref = 647
mnt_gen = 1
mnt_nvnodelistsize = 647
mnt_writeopcount = 0
mnt_noasync = 0
mnt_maxsymlinklen = 120
mnt_iosize_max = 131072
mnt_hashseed = 3875541360
mnt_secondary_writes = 0
mnt_secondary_accwrites = 1674383
mnt_gjprovider = NULL
db> show mount 0xffffff000393a000
0xffffff000393a000 devfs on /dev (devfs)
mnt_flag = MULTILABEL, LOCAL
mnt_kern_flag = MPSAFE
mnt_opt =
mnt_stat = { version=537068824 type=2 flags=0x0000000004001000 bsize=0
iosize=0 blocks=0 bfree=0 bavail=0 files=0 ffree=0 syncwrites=0
asyncwrites=0 syncreads=0 asyncreads=0 namemax=255 owner=0 fsid=[33619712,
2] }
mnt_cred = { uid=0 ruid=0 }
mnt_ref = 36
mnt_gen = 1
mnt_nvnodelistsize = 36
mnt_writeopcount = 0
mnt_noasync = 0
mnt_maxsymlinklen = 0
mnt_iosize_max = 65536
mnt_hashseed = 1577461787
mnt_secondary_writes = 0
mnt_secondary_accwrites = 0
mnt_gjprovider = NULL
db> show mount 0xffffff00039398e8
0xffffff00039398e8 linprocfs on /proc (linprocfs)
mnt_flag = LOCAL
mnt_kern_flag = MPSAFE
mnt_opt = fstype, fspath, from, errmsg
mnt_stat = { version=537068824 type=8 flags=0x0000000000001000
bsize=4096 iosize=4096 blocks=1 bfree=0 bavail=0 files=1 ffree=0
syncwrites=0 asyncwrites=0 syncreads=0 asyncreads=0 namemax=255 owner=0
fsid=[134283009, 8] }
mnt_cred = { uid=0 ruid=0 }
mnt_ref = 393
mnt_gen = 1
mnt_nvnodelistsize = 393
mnt_writeopcount = 0
mnt_noasync = 0
mnt_maxsymlinklen = 0
mnt_iosize_max = 65536
mnt_hashseed = 486483318
mnt_secondary_writes = 0
mnt_secondary_accwrites = 0
mnt_gjprovider = NULL
db> show mount 0xffffff0009b9d000
0xffffff0009b9d000 /dev/ad0s2d on /opt/sid/build (ufs)
mnt_flag = LOCAL
mnt_kern_flag = EXTENDED_SHARED, MPSAFE, LOOKUP_SHARED
mnt_opt = rw, fstype, fspath, from, errmsg, noro
mnt_stat = { version=537068824 type=7 flags=0x0000000000001000
bsize=2048 iosize=16384 blocks=9683239 bfree=4555857 bavail=3781198
files=2520062 ffree=1888868 syncwrites=0 asyncwrites=0 syncreads=0
asyncreads=0 namemax=255 owner=0 fsid=[1208030997, -1215882613] }
mnt_cred = { uid=0 ruid=0 }
mnt_ref = 2297
mnt_gen = 1
mnt_nvnodelistsize = 2296
mnt_writeopcount = 0
mnt_noasync = 0
mnt_maxsymlinklen = 120
mnt_iosize_max = 131072
mnt_hashseed = 1634023874
mnt_secondary_writes = 1
mnt_secondary_accwrites = 1332980
mnt_gjprovider = NULL
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