Hello,
I have an issue with SGE 8.1.9 on Debian stretch. I try to increase the
number of dynamic event clients to 5000:
dieterich@gc-node-5:~$ qconf -sconf global | grep qmaster_params
qmaster_params MAX_DYN_EC=5000
But somehow that limit is overriden by sge_qmaster and I end up with
only 978 dynamic event clients:
08/02/2017 14:30:08| main|gc-node-5|W|local configuration
gc-node-5.mpipz.mpg.de not defined - using global configuration
08/02/2017 14:30:08| main|gc-node-5|I|read job database with 6 entries
in 0 seconds
08/02/2017 14:30:08| main|gc-node-5|W|nr of dynamic event clients
exceeds max file descriptor limit, setting MAX_DYN_EC=978
08/02/2017 14:30:08| main|gc-node-5|I|qmaster hard descriptor limit is
set to 12288
08/02/2017 14:30:08| main|gc-node-5|I|qmaster soft descriptor limit is
set to 12288
08/02/2017 14:30:08| main|gc-node-5|I|qmaster will use max. 1003 file
descriptors for communication
08/02/2017 14:30:08| main|gc-node-5|I|qmaster will accept max. 978
dynamic event clients
08/02/2017 14:30:08| main|gc-node-5|I|starting up SGE 8.1.9 (lx-amd64)
The irritating thing is that qmaster correctly reports the descriptor
limit as 12288 but then claims to only use 1003 file descriptiors. I
checked on /proc/<qmaster-pid>/limits that 12288 is the valid value.
I had a brief look into the source code and followed the setting to
cl_com_create_handle() in source/libs/comm/cl_commlib.c:
#if defined(IRIX)
getrlimit64(RLIMIT_NOFILE, &application_rlimits);
#else
getrlimit(RLIMIT_NOFILE, &application_rlimits);
#endif
new_handle->max_open_connections = (unsigned long)
application_rlimits.rlim_cur;
That looks correct to me.
Am I missing some configuration parameter to increase the limit of open
file descriptors? Or is this a bug?
Best regards
Roland
--
Roland Dieterich
IT-Manager
Max Planck-Genome-centre Cologne
Building B
Carl-von-Linné-Weg 10
50829 Köln
Tel: (+49)221-5062816
Fax: (+49)221-5062851
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