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On RELENG_6 (and probably RELENG_7) we see our syscons windows and pseudo-terminals have the following buffer sizes: | LINE RAW CAN OUT IHIWT ILOWT OHWT LWT COL STATE SESS PGID DISC | ttyv0 0 0 0 7680 6720 2052 256 7 OCcl 1146 1146 term | ttyp0 0 0 0 7680 6720 1296 256 0 OCc 82033 82033 term These buffer sizes make no sense, because we often have much more output than input, but I guess having higher input buffer sizes improves guarantees of the system. On MPSAFE TTY I just sent both the input and output buffer sizes to 7 KB, which is pretty big on a standard FreeBSD install with 8 syscons windows and some PTY's. Reduce the baud rate to 9600 baud, which means we now have the following buffer sizes: | LINE INQ CAN LIN LOW OUTQ USE LOW COL SESS PGID STATE | ttyv0 1920 0 0 192 1984 0 199 7 2401 2401 Oil | pts/0 1920 0 0 192 1984 0 199 5631 1305 2526 Oi This is a lot smaller, but for pseudo-devices this should be good enough. You need to do a lot of punching to fill up a 7.5 KB input buffer. If it turns out things don't work out this way, we'll just switch to 19200 baud. |
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| .. | ||
| apm | ||
| blank | ||
| daemon | ||
| dragon | ||
| fade | ||
| fire | ||
| green | ||
| logo | ||
| rain | ||
| snake | ||
| star | ||
| warp | ||
| scgfbrndr.c | ||
| schistory.c | ||
| scmouse.c | ||
| scterm-dumb.c | ||
| scterm-sc.c | ||
| scterm.c | ||
| sctermvar.h | ||
| scvesactl.c | ||
| scvgarndr.c | ||
| scvidctl.c | ||
| scvtb.c | ||
| syscons.c | ||
| syscons.h | ||
| sysmouse.c | ||