F-SECURE INTERNET GATEKEEPER FOR LINUX 4.01 Administrator's Manual page 82

Message
###ERROR### semget failure. Childnum(pre_spawn=[Maximum connections])
may be large. If needed, maximum semaphore number(SEMMNI)
can increase by adding like 'kernel.sem=250 128000 32 512' on
'/etc/sysctl.conf' and running 'sysctl -p'./strerror(28)=No space
left on device
Description
The service could not be started because the semaphore could not be secured.
Solution
If a service process (fsigk_xxx) is terminated, for example by the "kill -KILL" command, an error
can occur if semaphores are not released and left in the system process. In this case, restart the
server (Operating System). You can check the semaphores that are currently used at
"/proc/sysvipc/sem".
If the maximum number of connections is set to a large number, this error is more likely to occur
because more semaphores are needed. Set the maximum number of connections to under 2000
connections. Use a larger number only if it is absolutely necessary. Usually, the maximum number
of connections should not be set to over 2000 connections.
The product requires semaphores according to the number of processes. You may sometimes
need to increase the number of semaphores that the operating system can use. This may happen,
for example, when the maximum number of connections needs to be increased or if other
processes are using a large number of semaphores. To increase the number of semaphores:
1 Add the following line to /etc/sysctl.conf:
kernel.sem=250 128000 32 512
2 Run the following command:
# sysctl -p
3 Check that the number of semaphores has been configured. Use the following command:
# cat /proc/sys/kernel/sem
250 128000 32 512
Message
###ERROR### sendfile timeout: No data can send while 120 sec. There maybe
temporary network trouble between receiver.) / URL=[...] ...
Description
Logged when a session is disconnected because no data could be sent for 120 seconds.
Solution
Check if there are any problems in the network.
F-Secure Internet Gatekeeper for Linux/Administrator's Guide
82