[Mailman-Users] Excessive CPU usage [Looping read/close/mmap] (.db , .pck) (qfiles/out)

[foobar]

Hi,

Some strace:

-- Opening that db --

open("/opt/mailman-2.1.2/qfiles/out/1055856935.2792439+c164823523573087c71ed0088b9beb1dcc0c9698.db",
O_RDONLY|O_LARGEFILE) = 9
fstat64(9, {st_mode=S_IFREG|0660, st_size=2054, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40227000
read(9, "{s\4\0\0\0langs\2\0\0\0ens\10\0\0\0listnames\10"..., 4096) = 2054
close(9)                                = 0
munmap(0x40227000, 4096)                = 0
unlink("/opt/mailman-2.1.2/qfiles/out/1055856935.2792439+c164823523573087c71ed0088b9beb1dcc0c9698.db")
= 0
open("/opt/mailman-2.1.2/qfiles/out/1055856935.2792439+c164823523573087c71ed0088b9beb1dcc0c9698.pck",
O_RDONLY|O_LARGEFILE) = 9
fstat64(9, {st_mode=S_IFREG|0660, st_size=7441, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40227000
read(9, "(cMailman.Message\nMessage\nq\1oq\2}"..., 4096) = 4096
read(9, "tor\" CONTENT=3D\"MS Exchange Serv"..., 4096) = 3345
unlink("/opt/mailman-2.1.2/qfiles/out/1055856935.2792439+c164823523573087c71ed0088b9beb1dcc0c9698.pck")
= 0
close(9)                                = 0
munmap(0x40227000, 4096)                = 0

--- Locale (Why do we need locale here?) ---

stat64("/opt/mailman-2.1.2/messages/en_US.ISO8859-1/LC_MESSAGES/mailman.mo",
0xbfffe9e0) = -1 ENOENT (No such file or directory)
stat64("/opt/mailman-2.1.2/messages/en_US/LC_MESSAGES/mailman.mo",
0xbfffe9e0) = -1 ENOENT (No such file or directory)
stat64("/opt/mailman-2.1.2/messages/en.ISO8859-1/LC_MESSAGES/mailman.mo",
0xbfffe9e0) = -1 ENOENT (No such file or directory)
stat64("/opt/mailman-2.1.2/messages/en/LC_MESSAGES/mailman.mo",
0xbfffe9e0) = -1 ENOENT (No such file or directory)
gettimeofday({1056003211, 26430}, NULL) = 0
gettimeofday({1056003211, 26915}, NULL) = 0
umask(07)                               = 0
open("/opt/mailman-2.1.2/qfiles/out/1055856935.2792439+1a902a0f2890e7389ed4a8dbe1ec989202db8b15.pck",
O_WRONLY|O_CRET|O_TRUNC|O_LARGEFILE, 0666) = 9
umask(0)                                = 07
fstat64(9, {st_mode=S_IFREG|0660, st_size=0, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40227000
write(9, "(cMailman.Message\nMessage\nq\1oq\2}"..., 4096) = 4096
write(9, "59-1\">\n<META NAME=3D\"Generator\" "..., 3345) = 3345
close(9)                                = 0
munmap(0x40227000, 4096)                = 0
umask(07)                               = 0
open("/opt/mailman-2.1.2/qfiles/out/1055856935.2792439+1a902a0f2890e7389ed4a8dbe1ec989202db8b15.db.tmp",
O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE, 0666) = 9
umask(0)                                = 07
fstat64(9, {st_mode=S_IFREG|0660, st_size=0, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40227000
write(9, "{s\4\0\0\0langs\2\0\0\0ens\10\0\0\0listnames\10"..., 2054) =
2054
close(9)                                = 0
munmap(0x40227000, 4096)                = 0
rename("/opt/mailman-2.1.2/qfiles/out/1055856935.2792439+1a902a0f2890e7389ed4a8dbe1ec989202db8b15.db.tmp",
"/opt/mailman-2.1.2/qfiles/out/1055856935.2792439+1a902a0f2890e7389ed4a8dbe1ec989202db8b15.db")
= 0

open("/opt/mailman-2.1.2/qfiles/out",
O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 9
fstat64(9, {st_mode=S_IFDIR|S_ISGID|0770, st_size=4096, ...}) = 0
fcntl64(9, F_SETFD, FD_CLOEXEC)         = 0
getdents64(0x9, 0x83f27c8, 0x1000, 0x1) = 224
getdents64(0x9, 0x83f27c8, 0x1000, 0x838e718) = 0
close(9)                                = 0

open("/opt/mailman-2.1.2/qfiles/out/1055856935.2792439+1a902a0f2890e7389ed4a8dbe1ec989202db8b15.db",
O_RDONLY|O_LARGEFILE) = 9
fstat64(9, {st_mode=S_IFREG|0660, st_size=2054, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40227000
read(9, "{s\4\0\0\0langs\2\0\0\0ens\10\0\0\0listnames\10"..., 4096) = 2054
close(9)                                = 0
munmap(0x40227000, 4096)                = 0
unlink("/opt/mailman-2.1.2/qfiles/out/1055856935.2792439+1a902a0f2890e7389ed4a8dbe1ec989202db8b15.db")
= 0
open("/opt/mailman-2.1.2/qfiles/out/1055856935.2792439+1a902a0f2890e7389ed4a8dbe1ec989202db8b15.pck",
O_RDONLY|O_LARGEFILE) = 9
fstat64(9, {st_mode=S_IFREG|0660, st_size=7441, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40227000
read(9, "(cMailman.Message\nMessage\nq\1oq\2}"..., 4096) = 4096

Could you tell what is wrong, no messages are going currently out or in,
MTA is working properly and bounces were handled correctly.

  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME COMMAND
xxxxx mailman   25   0  6188 4848  2820 R    94,5  1,8  1192m python

What _could_ cause this kind of looping?

Mailman (see directory) version is 2.1.2

Could it be error 450 (I reject every delivery to non-existent domain):

XXX XX XX:XX:XX 2003 (XXYYZZ) delivery to ff at ff failed with
code 450: <ff at ff>: Recipient address rejected: Domain not
found

If yes, is there any workaround for this?

Best regards,
Veli Pirttila  |  ++Titus