[Samba] smbd keeps maxing out the cpu, must reboot server
constantly
James A. Dinkel
jdinkel at bucoks.com
Fri Jan 5 20:23:24 GMT 2007
Yeah, I see the brief spikes when each user connects. Those are nothing. This is a dual-Xeon 3.6Ghz server (both assigned to the Ubuntu file server vm) with 1GB of RAM assigned to this vm. It's the only vm running on this ESX server.
Also top doesn't show a user smbd process maxing out the processor, it's the root smbd process.
-----Original Message-----
From: Aaron Kincer
Sent: Friday, January 05, 2007 10:00 AM
To: James A. Dinkel
Cc: samba at lists.samba.org
Subject: Re: [Samba] smbd keeps maxing out the cpu, must reboot server
constantly
I just watched the top for a bit and did some testing and I see brief
spikes on my system where each domain user has their own smbd process
that grabs resources. This seems to happen when first opening a
directory. It would seem that whatever resources Samba needs to complete
this operation, my server has better access to or more of so that my
server isn't hanging. Have you watched the resources on your domain
controllers to see if they are seeing spikes too?
James A. Dinkel wrote:
> This is running in vmware, and I noticed occasionally wmware reports
> that the cpu is being maxed out by a virtual machine. Logging into the
> virtual machine and running top confirms that the smbd process is maxing
> out the cpu. If I leave it alone for a while, eventually it starts
> dropping connections and not letting people into the file server.
> Killing the process with kill -9 does no good, it just immediately comes
> back with a new pid. Stopping the service also does no good. I have
> to reboot the server, and occasionally even during the shutdown it will
> hang (I left it for 30 minutes) and I have to kill the power.
>
> I tried collecting logs from the time the max out started. The computer
> will run for a while, sometimes less than an hour, sometimes all day,
> just fine, and then in less than a second the cpu goes from around 10%
> to 100% and stays there until I reboot. But the default logs tell me
> nothing and the level 10 logs are Greek to me.
>
> James Dinkel
>
> PS. Earlier this morning I switched to level 10 logs and when the "max
> out" happened I checked the time in the VMWare performance graphs. It
> looks like it happened around 9:26:40 to 9:27:20. Here are the VERY
> LONG grep results for around that time in the logs:
>
> sudo grep "2007/01/04 09:26" /var/log/samba/*
> -------------------------------------------
> /var/log/samba/192.168.0.202.log:[2007/01/04 09:26:12, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.0.202.log:[2007/01/04 09:26:12, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.0.202.log:[2007/01/04 09:26:12, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.0.202.log:[2007/01/04 09:26:12, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.0.202.log:[2007/01/04 09:26:12, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/192.168.0.225.log:[2007/01/04 09:26:42, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.0.225.log:[2007/01/04 09:26:42, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.0.225.log:[2007/01/04 09:26:42, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.0.225.log:[2007/01/04 09:26:42, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.0.225.log:[2007/01/04 09:26:42, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/192.168.10.166.log:[2007/01/04 09:26:39, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.10.166.log:[2007/01/04 09:26:39, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.10.166.log:[2007/01/04 09:26:39, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.10.166.log:[2007/01/04 09:26:39, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.10.166.log:[2007/01/04 09:26:39, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/192.168.10.168.log:[2007/01/04 09:26:30, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.10.168.log:[2007/01/04 09:26:30, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.10.168.log:[2007/01/04 09:26:30, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.10.168.log:[2007/01/04 09:26:30, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.10.168.log:[2007/01/04 09:26:30, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/192.168.10.185.log:[2007/01/04 09:26:57, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.10.185.log:[2007/01/04 09:26:57, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.10.185.log:[2007/01/04 09:26:57, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.10.185.log:[2007/01/04 09:26:57, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.10.185.log:[2007/01/04 09:26:57, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/192.168.2.103.log:[2007/01/04 09:26:10, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.2.103.log:[2007/01/04 09:26:10, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.2.103.log:[2007/01/04 09:26:10, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.2.103.log:[2007/01/04 09:26:10, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.2.103.log:[2007/01/04 09:26:10, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/192.168.2.111.log:[2007/01/04 09:26:44, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.2.111.log:[2007/01/04 09:26:44, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.2.111.log:[2007/01/04 09:26:44, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.2.111.log:[2007/01/04 09:26:44, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.2.111.log:[2007/01/04 09:26:44, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/192.168.9.58.log:[2007/01/04 09:26:34, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.9.58.log:[2007/01/04 09:26:34, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.9.58.log:[2007/01/04 09:26:34, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.9.58.log:[2007/01/04 09:26:34, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.9.58.log:[2007/01/04 09:26:34, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:04, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
> /var/log/samba/smbd.log.old:[2007/01/04 09:26:39, 5]
> lib/util_sock.c:print_socket_options(206)
>
> sudo grep "2007/01/04 09:27" /var/log/samba/*
> ------------------------------------------------
> /var/log/samba/192.168.0.202.log:[2007/01/04 09:27:12, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.0.202.log:[2007/01/04 09:27:12, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.0.202.log:[2007/01/04 09:27:12, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.0.202.log:[2007/01/04 09:27:12, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.0.202.log:[2007/01/04 09:27:12, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/192.168.0.225.log:[2007/01/04 09:27:42, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.0.225.log:[2007/01/04 09:27:42, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.0.225.log:[2007/01/04 09:27:42, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.0.225.log:[2007/01/04 09:27:42, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.0.225.log:[2007/01/04 09:27:42, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/192.168.10.166.log:[2007/01/04 09:27:39, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.10.166.log:[2007/01/04 09:27:39, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.10.166.log:[2007/01/04 09:27:39, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.10.166.log:[2007/01/04 09:27:39, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.10.166.log:[2007/01/04 09:27:39, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/192.168.10.185.log:[2007/01/04 09:27:57, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.10.185.log:[2007/01/04 09:27:57, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.10.185.log:[2007/01/04 09:27:57, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.10.185.log:[2007/01/04 09:27:57, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.10.185.log:[2007/01/04 09:27:57, 6]
> param/loadparm.c:lp_file_list_changed(3006)
> /var/log/samba/192.168.10.185.log:[2007/01/04 09:27:57, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/192.168.2.103.log:[2007/01/04 09:27:10, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.2.103.log:[2007/01/04 09:27:10, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.2.103.log:[2007/01/04 09:27:10, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.2.103.log:[2007/01/04 09:27:10, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.2.103.log:[2007/01/04 09:27:10, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/192.168.2.111.log:[2007/01/04 09:27:44, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.2.111.log:[2007/01/04 09:27:44, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.2.111.log:[2007/01/04 09:27:44, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.2.111.log:[2007/01/04 09:27:44, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.2.111.log:[2007/01/04 09:27:44, 10]
> smbd/process.c:setup_select_timeout(1284)
> /var/log/samba/192.168.9.58.log:[2007/01/04 09:27:34, 3]
> smbd/sec_ctx.c:set_sec_ctx(241)
> /var/log/samba/192.168.9.58.log:[2007/01/04 09:27:34, 5]
> auth/auth_util.c:debug_nt_user_token(448)
> /var/log/samba/192.168.9.58.log:[2007/01/04 09:27:34, 5]
> auth/auth_util.c:debug_unix_user_token(474)
> /var/log/samba/192.168.9.58.log:[2007/01/04 09:27:34, 5]
> smbd/uid.c:change_to_root_user(275)
> /var/log/samba/192.168.9.58.log:[2007/01/04 09:27:34, 10]
> smbd/process.c:setup_select_timeout(1284)
>
>
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