d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
5bbae50149
freebsd-nq/sys
History
Ed Schouten 5bbae50149 Reduce the default baud rate of PTY's to 9600. 
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.
2008-11-08 20:40:39 +00:00
..
amd64 Revert r184136. Instead, push the check for crashdumpmap overflow into the 2008-10-31 10:11:35 +00:00
arm ARM pmap style(9) and cosmetics. 2008-11-06 16:28:28 +00:00
boot Modify our boot block to pick an output device, without which boot1 will fail 2008-10-31 00:52:31 +00:00
bsm When MPSAFE ttys were merged, a new BSM audit event identifier was 2008-08-24 21:20:35 +00:00
cam Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
cddl Require write access on a directory being moved from one parent 2008-11-08 19:56:32 +00:00
compat utf-8 2008-11-05 15:08:09 +00:00
conf Support kernel crash mini dumps on ARM architecture. 2008-11-06 16:20:27 +00:00
contrib Fix a number of style issues in the MALLOC / FREE commit. I've tried to 2008-10-23 20:26:15 +00:00
crypto Simplify session selection/allocation. 2008-08-09 20:01:01 +00:00
ddb Collect N identical (or near identical) mkdumpheader() implementations into 2008-10-01 22:08:53 +00:00
dev Reduce the default baud rate of PTY's to 9600. 2008-11-08 20:40:39 +00:00
fs Remove unnecessary locking around vn_fullpath(). The vnode lock for the 2008-11-04 19:04:01 +00:00
gdb Commit SYSINIT() ;-adding patch missed in previous pass. 2008-03-16 13:02:04 +00:00
geom Fix a panic caused by a corrupted table when the header is 2008-11-06 16:51:33 +00:00
gnu Improve VFS locking: 2008-11-02 10:15:42 +00:00
i386 Move the CAM passthrough code into a true module so that it doesn't have to be 2008-11-03 00:53:54 +00:00
ia64 Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
isa MFp4: 2008-11-02 18:48:54 +00:00
kern Reduce the default baud rate of PTY's to 9600. 2008-11-08 20:40:39 +00:00
kgssapi Implement support for RPCSEC_GSS authentication to both the NFS client 2008-11-03 10:38:00 +00:00
libkern Prefix the static shl function with '__' like its parent function __qdivrem to 2008-10-09 20:43:42 +00:00
mips Remove cardbus attachment. It likely was a cut-n-paste left over from 2008-11-02 02:58:24 +00:00
modules Unbreak NFS. 2008-11-06 10:53:35 +00:00
net Include if_arp.h for IFP2AC so that the netgraph parts in if.c 2008-11-06 15:26:09 +00:00
net80211 Fix checks for fast frames negotiation. ni_ath_flags holds the 2008-10-30 16:22:04 +00:00
netatalk Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
netgraph Don't use curthread to resolve file descriptor. Request may be queued, so 2008-11-08 06:25:57 +00:00
netinet Fix typo and while here another one. 2008-11-06 16:30:20 +00:00
netinet6 Add a MAC label, MAC Framework, and MAC policy entry points for IPv6 2008-10-26 22:45:18 +00:00
netipsec Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
netipx Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
netnatm Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
netncp Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
netsmb Implement device cloning for /dev/nsmb, the netsmb control pseudo-device. 2008-11-03 14:23:15 +00:00
nfs Replaced the misleading uses of a historical artefact M_TRYWAIT with M_WAIT. 2008-03-25 09:39:02 +00:00
nfs4client Introduce accmode_t. This is required for NFSv4 ACLs - it will be neccessary 2008-10-28 13:44:11 +00:00
nfsclient Implement support for RPCSEC_GSS authentication to both the NFS client 2008-11-03 10:38:00 +00:00
nfsserver Range-check NFSv2 procedure numbers before converting to NFSv3. 2008-11-07 10:43:01 +00:00
nlm Implement support for RPCSEC_GSS authentication to both the NFS client 2008-11-03 10:38:00 +00:00
opencrypto Don't hang if encrypting/decrypting using struct iovecs where one of the 2008-10-30 16:11:07 +00:00
pc98 Improved IDE HDD geometry adjustment. Previous code didn't work with 2008-10-27 08:40:13 +00:00
pccard
pci Move mn over. One of the last stragglers in sys/pci. There's no 2008-11-02 17:04:54 +00:00
powerpc Fix compilation in the case when kernel doesn't have KDB ebabled. 2008-10-30 21:02:00 +00:00
rpc Implement support for RPCSEC_GSS authentication to both the NFS client 2008-11-03 10:38:00 +00:00
security Use shared vnode locks for auditing vnode arguments as auditing only 2008-11-04 22:31:04 +00:00
sparc64 - Turn off interrupts instead of only entering a critical section 2008-10-28 22:05:20 +00:00
sun4v - In GCC 4.2 __builtin_frame_address() was fixed to include the 2008-10-27 21:31:14 +00:00
sys Reduce the default baud rate of PTY's to 9600. 2008-11-08 20:40:39 +00:00
tools Remove some unused and broken code that attempted to not invoke locking 2008-11-03 19:57:40 +00:00
ufs Quiet a WITNESS warning with the dirhash sx locks by setting the DUPOK 2008-11-04 18:56:12 +00:00
vm Support kernel crash mini dumps on ARM architecture. 2008-11-06 16:20:27 +00:00
xdr Don't return a NULL mbuf from xdrmbuf_getall. 2008-11-05 16:24:31 +00:00
xen Fix evtchn initialization on SMP 2008-10-24 07:57:48 +00:00
Makefile Improve the glimpse target: don't index .svn and compile directories. 2008-08-15 14:11:30 +00:00