Jeremy,
seems not to help. I have disabled nscd with /etc/init.d/nscd stop but the situation keeps unchanged. A few minutes after stopping and starting samba I have the same situation. Here is may nsswitch.conf. What should I change in it? Do you have any other idea?
regads, Heiko
/etc/nsswitch.conf ########################################################################## passwd: compat group: compat shadow: compat hosts: files dns networks: files protocols: db files services: db files ethers: db files rpc: db files netgroup: nis
Jeremy Allison wrote:
On Thu, Jul 29, 2004 at 08:18:22PM +0200, Böringer, Heiko wrote:
Hello together,
since upgrading on samba 3.0.x (issue happens with all 3.0. release) the cpu-load on my samba PDC ist constantly near 100%. The cpu power ist consumed by all running smb-processes. Systrace shows me that the smb processes tried to access to /etc/passwd on a permanent basis. My question is: Why tries samba to access etc/passwd so often and produces this high cpu-load?
Regards, Heiko Böringer
Rights for smbpasswd are set as following ################################################################ -rw-r--r-- 1 root root 5540 Jul 27 15:15 passwd
Systemconfiguration ################################################################ - Debian 3.0 (Woddy) - Samba with an the samba3.0.5.deb from the unstable tree (but happends with all other versions too) - Configured als PDC with SMBPASSWD Authentification (no windbind, kerberos, ldap..)
TOP shows the following ################################################################ PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND 19094 nobody 18 0 3872 3872 3440 R 8.7 0.7 43:22 smbd 5213 nobody 18 0 3784 3784 3400 R 8.7 0.7 29:43 smbd 9345 nobody 17 0 4100 4100 3628 R 8.7 0.7 29:24 smbd 10237 nobody 19 0 3772 3772 3400 R 8.7 0.7 29:06 smbd 17121 nobody 17 0 4140 4140 3632 R 8.7 0.8 28:02 smbd 20776 nobody 18 0 3668 3668 3324 R 8.7 0.7 27:48 smbd 17915 nobody 18 0 3768 3768 3388 R 8.7 0.7 46:35 smbd 18441 nobody 17 0 4128 4128 3640 R 8.5 0.7 45:16 smbd 25605 nobody 18 0 3784 3784 3400 R 8.5 0.7 6:38 smbd 1065 root 16 0 5504 5504 3928 R 7.1 1.0 0:59 smbd 28475 root 9 0 4280 4280 3700 S 0.3 0.8 0:02 smbd
Systrace on one of the smbd processes shows the following:
################################################################
open("/etc/passwd", O_RDONLY) = 26
fcntl64(26, F_GETFD) = 0
fcntl64(26, F_SETFD, FD_CLOEXEC) = 0
_llseek(26, 0, [0], SEEK_CUR) = 0
fstat64(26, {st_mode=S_IFREG|0644, st_size=5540, ...}) = 0
mmap2(NULL, 5540, PROT_READ, MAP_SHARED, 26, 0) = 0x40510000
_llseek(26, 5540, [5540], SEEK_SET) = 0
fstat64(26, {st_mode=S_IFREG|0644, st_size=5540, ...}) = 0
munmap(0x40510000, 5540) = 0
close(26) = 0
open("/etc/passwd", O_RDONLY) = 26
fcntl64(26, F_GETFD) = 0
fcntl64(26, F_SETFD, FD_CLOEXEC) = 0
_llseek(26, 0, [0], SEEK_CUR) = 0
fstat64(26, {st_mode=S_IFREG|0644, st_size=5540, ...}) = 0
mmap2(NULL, 5540, PROT_READ, MAP_SHARED, 26, 0) = 0x40510000
_llseek(26, 5540, [5540], SEEK_SET) = 0
fstat64(26, {st_mode=S_IFREG|0644, st_size=5540, ...}) = 0
munmap(0x40510000, 5540) = 0
close(26) = 0
open("/etc/passwd", O_RDONLY) = 26
fcntl64(26, F_GETFD) = 0
fcntl64(26, F_SETFD, FD_CLOEXEC) = 0
_llseek(26, 0, [0], SEEK_CUR) = 0
fstat64(26, {st_mode=S_IFREG|0644, st_size=5540, ...}) = 0
mmap2(NULL, 5540, PROT_READ, MAP_SHARED, 26, 0) = 0x40510000
_llseek(26, 5540, [5540], SEEK_SET) = 0
fstat64(26, {st_mode=S_IFREG|0644, st_size=5540, ...}) = 0
munmap(0x40510000, 5540) = 0
close(26) = 0
socket(PF_UNIX, SOCK_STREAM, 0) = 26
connect(26, {sin_family=AF_UNIX, path="/var/run/.nscd_socket"}, 110) = -1
ECONNREFUSED (Connection refused)
close(26) = 0
Looks like a nsswitch bug whilst talking to nscd. Turn off nscd from nsswitch.conf and see if the problem still occurs.
Jeremy.
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