Any one got any pointers on this, the machine we running this app on is over
90% idle so I really don't want to have to install a second machine just to
workaround a limit on the number of pty's, surely there's a way to
increase
this?
Regards
Steve
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On Tue, Oct 02, 2007 at 02:05:03PM +0200, Dag-Erling Sm?rgrav wrote:> "Steven Hartland" <killing@multiplay.co.uk> writes: > > Any one got any pointers on this, the machine we running this app on is over > > 90% idle so I really don't want to have to install a second machine just to > > workaround a limit on the number of pty's, surely there's a way to increase > > this? > > You need to change the way ptys are named in pty_create_slave() and > pty_clone() in sys/kern/tty_pty.c. Just changing names won't help as > the sequence is also hardcoded in pty_clone(). > > You also need to change grantpt(), openpty() and any other userland code > which has hardcoded knowledge of the naming scheme: > > des@ds4 ~% gfs pqrsPQRS > src/sys/kern/tty_pty.c: static char *names = "pqrsPQRS"; > src/sys/kern/tty_pty.c: * pts == /dev/tty[pqrsPQRS][0123456789abcdefghijklmnopqrstuv] > src/sys/kern/tty_pty.c: * ptc == /dev/pty[pqrsPQRS][0123456789abcdefghijklmnopqrstuv] > src/contrib/telnet/telnetd/sys_term.c: for (cp = "pqrsPQRS"; *cp; cp++) { > src/usr.sbin/ac/ac.c: strchr("pqrsPQRS", usr.ut_line[3]) != 0 || > src/lib/libutil/pty.c: for (cp1 = "pqrsPQRS"; *cp1; cp1++) { > src/lib/libc/stdlib/grantpt.c: #define PT_DEV1 "pqrsPQRS" > > Alternatively, set kern.pts.enable to 1, and find and fix the > hang-on-close bug in the pts code (if it hasn't been fixed already)This last option is only available if you are running 7-CURRENT though. The pts code is not in 6-STABLE (or older.) -- <Insert your favourite quote here.> Erik Trulsson ertr1013@student.uu.se
"Steven Hartland" <killing@multiplay.co.uk> writes:> Any one got any pointers on this, the machine we running this app on is over > 90% idle so I really don't want to have to install a second machine just to > workaround a limit on the number of pty's, surely there's a way to increase > this?You need to change the way ptys are named in pty_create_slave() and pty_clone() in sys/kern/tty_pty.c. Just changing names won't help as the sequence is also hardcoded in pty_clone(). You also need to change grantpt(), openpty() and any other userland code which has hardcoded knowledge of the naming scheme: des@ds4 ~% gfs pqrsPQRS src/sys/kern/tty_pty.c: static char *names = "pqrsPQRS"; src/sys/kern/tty_pty.c: * pts == /dev/tty[pqrsPQRS][0123456789abcdefghijklmnopqrstuv] src/sys/kern/tty_pty.c: * ptc == /dev/pty[pqrsPQRS][0123456789abcdefghijklmnopqrstuv] src/contrib/telnet/telnetd/sys_term.c: for (cp = "pqrsPQRS"; *cp; cp++) { src/usr.sbin/ac/ac.c: strchr("pqrsPQRS", usr.ut_line[3]) != 0 || src/lib/libutil/pty.c: for (cp1 = "pqrsPQRS"; *cp1; cp1++) { src/lib/libc/stdlib/grantpt.c: #define PT_DEV1 "pqrsPQRS" Alternatively, set kern.pts.enable to 1, and find and fix the hang-on-close bug in the pts code (if it hasn't been fixed already) DES -- Dag-Erling Sm?rgrav - des@des.no