- **status**: unassigned --> accepted
- **assigned_to**: Anders Widell
---
** [tickets:#452] osaf: Allow us to use more than 1024 file descriptors**
**Status:** accepted
**Created:** Wed Jun 12, 2013 10:49 AM UTC by Anders Widell
**Last Updated:** Wed Jun 12, 2013 10:49 AM UTC
**Owner:** Anders Widell
Migrated from <http://devel.opensaf.org/ticket/695>
When I invoke saImmOmInitialize the first time, a few threads are created. At
least two of these threads are using **select** (ncs_sel_obj_select and
ncs_tmr_wait). This is very unfortunate as the usage of select implies a
superflous limitation of the maximum number of open file descriptors in our
processes. If you use **poll** in your agent libraries, you will enable us to
use more than 1024 file descriptors.
It may be the case that there are other functions (than these mentioned above)
that also are using select in OpenSAF agent libraries. See the stack trace from
gdb below for details.
/Håkan
—
Håkan Mattsson, Erlang/OTP, Ericsson AB
(gdb) thr 2
[Switching to thread 2 (process 15689)]#0 0x00002b0d895a29a2 in select ()
from /lib64/libc.so.6
(gdb) bt
#0 0x00002b0d895a29a2 in select () from /lib64/libc.so.6
#1 0x00002aaaab174a05 in ncs_sel_obj_select (highest_sel_obj={raise_obj =
15, rmv_obj = 16}, rfds=0x420684b0, wfds=0x0, efds=0x0, timeout_in_10ms=0x0) at
src/os_defs.c:2818
#2 0x00002aaaab149d23 in ncs_ipc_recv_common (mbx=0x2aaaab2e2580, block=1)
at src/sysf_ipc.c:447
#3 0x00002aaaab149bf5 in ncs_ipc_recv (mbx=0x2aaaab2e2580) at
src/sysf_ipc.c:394
#4 0x00002aaaab1b736b in dta_do_evts (mbx=0x2aaaab2e2580) at dta_api.c:1260
#5 0x00002b0d892cb143 in start_thread () from /lib64/libpthread.so.0
#6 0x00002b0d895a8b8d in clone () from /lib64/libc.so.6
#7 0x0000000000000000 in ?? ()
(gdb) thr 3
[Switching to thread 3 (process 15688)]#0 0x00002b0d895a08b6 in poll ()
from /lib64/libc.so.6
(gdb) bt
#0 0x00002b0d895a08b6 in poll () from /lib64/libc.so.6
#1 0x00002aaaab17d39e in mdtm_process_recv_events () at
src/mds_dt_tipc.c:640
#2 0x00002b0d892cb143 in start_thread () from /lib64/libpthread.so.0
#3 0x00002b0d895a8b8d in clone () from /lib64/libc.so.6
#4 0x0000000000000000 in ?? ()
(gdb) thr 4
[Switching to thread 4 (process 15687)]#0 0x00002b0d895a29a2 in select ()
from /lib64/libc.so.6
(gdb) bt
#0 0x00002b0d895a29a2 in select () from /lib64/libc.so.6
#1 0x00002aaaab14e4d6 in ncs_tmr_wait () at src/sysf_tmr.c:541
#2 0x00002b0d892cb143 in start_thread () from /lib64/libpthread.so.0
#3 0x00002b0d895a8b8d in clone () from /lib64/libc.so.6
#4 0x0000000000000000 in ?? ()
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