Commit Graph

58936 Commits

Author SHA1 Message Date
ru
367b1f6b19 vnconfig(8) -> mdconfig(8).
Reviewed by:	phk
2001-04-10 16:15:01 +00:00
greid
adb816942e Add another card to the list of Neomagic 256AV's which don't have AC97
codecs. Also, add some additional code to check for future cards without
this feature - attempting to initialise them as AC97 cards will hang the
machine.

PR:		26427
Reviewed by:	cg
2001-04-10 14:28:21 +00:00
cg
5bd038eff8 lock the mutex, not the softc pointer. 2001-04-10 13:52:26 +00:00
nik
f9125d616d Add information about the new options to newfs and tunefs which set the
expected average file size and number of files per directory.  Could do
with some fleshing out.
2001-04-10 10:36:44 +00:00
obrien
2fbfd2079a Correct some cut-n-paste errors. Also embellish the UP1100 a little. 2001-04-10 10:35:29 +00:00
mckusick
3931e94b1f Directory layout preference improvements from Grigoriy Orlov <gluk@ptci.ru>.
His description of the problem and solution follow. My own tests show
speedups on typical filesystem intensive workloads of 5% to 12% which
is very impressive considering the small amount of code change involved.

------

  One day I noticed that some file operations run much faster on
small file systems then on big ones. I've looked at the ffs
algorithms, thought about them, and redesigned the dirpref algorithm.

  First I want to describe the results of my tests. These results are old
and I have improved the algorithm after these tests were done. Nevertheless
they show how big the perfomance speedup may be. I have done two file/directory
intensive tests on a two OpenBSD systems with old and new dirpref algorithm.
The first test is "tar -xzf ports.tar.gz", the second is "rm -rf ports".
The ports.tar.gz file is the ports collection from the OpenBSD 2.8 release.
It contains 6596 directories and 13868 files. The test systems are:

1. Celeron-450, 128Mb, two IDE drives, the system at wd0, file system for
   test is at wd1. Size of test file system is 8 Gb, number of cg=991,
   size of cg is 8m, block size = 8k, fragment size = 1k OpenBSD-current
   from Dec 2000 with BUFCACHEPERCENT=35

2. PIII-600, 128Mb, two IBM DTLA-307045 IDE drives at i815e, the system
   at wd0, file system for test is at wd1. Size of test file system is 40 Gb,
   number of cg=5324, size of cg is 8m, block size = 8k, fragment size = 1k
   OpenBSD-current from Dec 2000 with BUFCACHEPERCENT=50

You can get more info about the test systems and methods at:
http://www.ptci.ru/gluk/dirpref/old/dirpref.html

                              Test Results

             tar -xzf ports.tar.gz               rm -rf ports
  mode  old dirpref new dirpref speedup old dirprefnew dirpref speedup
                             First system
 normal     667         472      1.41       477        331       1.44
 async      285         144      1.98       130         14       9.29
 sync       768         616      1.25       477        334       1.43
 softdep    413         252      1.64       241         38       6.34
                             Second system
 normal     329         81       4.06       263.5       93.5     2.81
 async      302         25.7    11.75       112          2.26   49.56
 sync       281         57.0     4.93       263         90.5     2.9
 softdep    341         40.6     8.4        284          4.76   59.66

"old dirpref" and "new dirpref" columns give a test time in seconds.
speedup - speed increasement in times, ie. old dirpref / new dirpref.

------

Algorithm description

The old dirpref algorithm is described in comments:

/*
 * Find a cylinder to place a directory.
 *
 * The policy implemented by this algorithm is to select from
 * among those cylinder groups with above the average number of
 * free inodes, the one with the smallest number of directories.
 */

A new directory is allocated in a different cylinder groups than its
parent directory resulting in a directory tree that is spreaded across
all the cylinder groups. This spreading out results in a non-optimal
access to the directories and files. When we have a small filesystem
it is not a problem but when the filesystem is big then perfomance
degradation becomes very apparent.

What I mean by a big file system ?

  1. A big filesystem is a filesystem which occupy 20-30 or more percent
     of total drive space, i.e. first and last cylinder are physically
     located relatively far from each other.
  2. It has a relatively large number of cylinder groups, for example
     more cylinder groups than 50% of the buffers in the buffer cache.

The first results in long access times, while the second results in
many buffers being used by metadata operations. Such operations use
cylinder group blocks and on-disk inode blocks. The cylinder group
block (fs->fs_cblkno) contains struct cg, inode and block bit maps.
It is 2k in size for the default filesystem parameters. If new and
parent directories are located in different cylinder groups then the
system performs more input/output operations and uses more buffers.
On filesystems with many cylinder groups, lots of cache buffers are
used for metadata operations.

My solution for this problem is very simple. I allocate many directories
in one cylinder group. I also do some things, so that the new allocation
method does not cause excessive fragmentation and all directory inodes
will not be located at a location far from its file's inodes and data.
The algorithm is:
/*
 * Find a cylinder group to place a directory.
 *
 * The policy implemented by this algorithm is to allocate a
 * directory inode in the same cylinder group as its parent
 * directory, but also to reserve space for its files inodes
 * and data. Restrict the number of directories which may be
 * allocated one after another in the same cylinder group
 * without intervening allocation of files.
 *
 * If we allocate a first level directory then force allocation
 * in another cylinder group.
 */

  My early versions of dirpref give me a good results for a wide range of
file operations and different filesystem capacities except one case:
those applications that create their entire directory structure first
and only later fill this structure with files.

  My solution for such and similar cases is to limit a number of
directories which may be created one after another in the same cylinder
group without intervening file creations. For this purpose, I allocate
an array of counters at mount time. This array is linked to the superblock
fs->fs_contigdirs[cg]. Each time a directory is created the counter
increases and each time a file is created the counter decreases. A 60Gb
filesystem with 8mb/cg requires 10kb of memory for the counters array.

  The maxcontigdirs is a maximum number of directories which may be created
without an intervening file creation. I found in my tests that the best
performance occurs when I restrict the number of directories in one cylinder
group such that all its files may be located in the same cylinder group.
There may be some deterioration in performance if all the file inodes
are in the same cylinder group as its containing directory, but their
data partially resides in a different cylinder group. The maxcontigdirs
value is calculated to try to prevent this condition. Since there is
no way to know how many files and directories will be allocated later
I added two optimization parameters in superblock/tunefs. They are:

        int32_t  fs_avgfilesize;   /* expected average file size */
        int32_t  fs_avgfpdir;      /* expected # of files per directory */

These parameters have reasonable defaults but may be tweeked for special
uses of a filesystem. They are only necessary in rare cases like better
tuning a filesystem being used to store a squid cache.

I have been using this algorithm for about 3 months. I have done
a lot of testing on filesystems with different capacities, average
filesize, average number of files per directory, and so on. I think
this algorithm has no negative impact on filesystem perfomance. It
works better than the default one in all cases. The new dirpref
will greatly improve untarring/removing/coping of big directories,
decrease load on cvs servers and much more. The new dirpref doesn't
speedup a compilation process, but also doesn't slow it down.

Obtained from:	Grigoriy Orlov <gluk@ptci.ru>
2001-04-10 08:38:59 +00:00
brian
0e306cda1d kldload ng_pppoe as necessary 2001-04-10 08:31:13 +00:00
bp
ad8307ae44 Add netsmb and smbfs include directories 2001-04-10 08:16:06 +00:00
bp
a414f03f5d Import kernel part of SMB/CIFS requester.
Add smbfs(CIFS) filesystem.

Userland part will be in the ports tree for a while.

Obtained from:	smbfs-1.3.7-dev package.
2001-04-10 07:59:06 +00:00
alfred
88436d21df Add more diagnostic output for failure.
s/1518/ETHER_MAX_LEN

Some style changes, add some braces, mostly residual from having
a lot of debug hooks added while working on this driver.

Bring in a plethora of changes from NetBSD:

	revision 1.58
	date: 2001/03/08 11:07:08;  author: ichiro;  state: Exp;  lines: +17 -1
	it wait until busy flag disappears.
	it was able to prevent some cards with late initializing faling in wi_reset().

	revision 1.41
	date: 2000/10/13 19:15:08;  author: jonathan;  state: Exp;  lines: +4 -2
	Fix wi_intr() to avoid touching card registers during insert/remove  events,
	when sharing an interrupt with other devices:
	check sc->sc_enabled,  and drop the interrupt if its' off.

	revision 1.30
	date: 2000/08/18 04:11:48;  author: jhawk;  state: Exp;  lines: +4 -4
	Copy wi_{dst,src}_addr from struct wi_frame into faked-up ether_header
	instead of addr1 and addr2. THis means that tcpdump -e will show the
	correct MAC address for communications with access points instead of showing
	the BSSID.

	In the future there should be 802.11 support for bpf/libpcap/tcpdump,
	but that is aways down the road.
2001-04-10 05:29:26 +00:00
deischen
f0c50f0089 Clean up a bit. Use the correct TAILQ link when walking the thread
lists to free thread resources after a fork (in the child).  Also
remember to free the dead thread list.
2001-04-10 04:25:49 +00:00
deischen
ec98854211 Added a missing set of braces to a conditional that encompasses more than
one statement.
2001-04-10 04:22:24 +00:00
deischen
dd46d4e05f To be consistent, use the __weak_reference macro from <sys/cdefs.h>
instead of #pragma weak to create weak definitions.

Suggested by:	bde
2001-04-10 04:19:21 +00:00
deischen
3c4f2f3db2 To be consistent, use the __weak_reference macro from <sys/cdefs.h>
instead of #pragma weak to create weak definitions.  This macro is
improperly named, though, since a weak definition is not the same
thing as a weak reference.

Suggested by:	bde
2001-04-10 04:11:50 +00:00
deischen
9afc57514e Include <unistd.h> so that read(2) and write(2) don't cause warnings. 2001-04-10 03:55:19 +00:00
deischen
28d5436d8a Fix a comment within a comment warning due to a missing "*/". 2001-04-10 03:47:40 +00:00
dd
cb8bda79d6 Make the list in the DIAGNOSTICS section "-tag" instead of "-diag":
the former makes it more obvious as to there the error message starts
and the explanation begins.

PR:		26431
2001-04-10 01:03:29 +00:00
bp
c7aea79d8d Avoid endless recursion on panic.
Reviewed by:	jhb
2001-04-10 00:56:19 +00:00
jhb
242556cfec Maintain a reference count on the witness struct. When the reference
count drops to 0 in witness_destroy, set the w_name and w_file pointers
to point to the string "(dead)" and the w_line field to 0.  This way,
if a mutex of a given name is used only in a module, then as long as
all mutexes in the module are destroyed when the module is unloaded,
witness will not maintain stale references to the mutex's name in the
module's data section causing a panic later on when the w_name or w_file
field's are examined.
2001-04-09 22:34:05 +00:00
mjacob
fec08fc485 Several things:
1. Pick up MII/PHY support for Livengood copper part (10/100/1000) from
Parag Patel. It was a fairly complete but not quite platform independent
job.

2. Finish silly offset differences that LIVENGOOD vs. WISEMAN registers
have (so the !)$*!)$*!$ fiber LIVENGOOD now works too).

3. Ansify the source.

So- we now suppor tthe PRO1000F and PRO1000T adapters.
2001-04-09 21:54:15 +00:00
mjacob
ba27ea97e4 Add in MII support for LICENGOOD copper part (10/100/1000). Add in some
more flags for verbose as well as debug printing.
2001-04-09 21:48:50 +00:00
mjacob
8096e9e8f4 Pick up changes from Parag Patel and Kachun Lee, and self:
1. The offsets for some registers change in LIVENGOOD. Gratuitously.

2. Define LIVENGOOD and LIVENGOOD_CU part numbers. Add some more
specific LIVENGOOD defaults.

3. Add definitions for PHY support for the copper LIVENGOOD part
(10/100/1000).
2001-04-09 21:47:11 +00:00
jhb
cd92f5e07a - One can now specify the decimal pid of a process to trace as a parameter.
Since pid's are not in the kernel address space, this doesn't conflict
  with the funcionality of specifying an arbitrary frame pointer to the
  trace command.
- If the first function of a backtrace maps to fork_trampoline, then this
  is a newly fork'd process that has not been executed yet, so just print
  out the first frame and then return for that case.
- Lower the default count from 65535 to 1024.  ddb doesn't trace into
  userland, and if the stack gets hosed and starts looping it's less
  annoying.
2001-04-09 21:43:45 +00:00
mjacob
179a4916c8 We now depend on miibus_if.h. 2001-04-09 21:34:52 +00:00
cg
b6c262a50b comment out a boot-time debug message 2001-04-09 21:33:47 +00:00
mjacob
c00a2d443a Add Marvell PHY support for 10/100/1000 LIVENGOOD_CU Intel NIC.
Parag Patel did all of the grunt work, so he gets the credit.
Register definitions and actions inferred from a Linux driver,
so Intel also gets some 'credit'.
2001-04-09 21:29:44 +00:00
obrien
842fe68115 Add a comment out console line for AlphaServer 8200 and 8400 ("TurboLaser") 2001-04-09 19:35:53 +00:00
n_hibma
9d6adf6e26 Rege. 2001-04-09 18:45:32 +00:00
n_hibma
2a31e74a4f Again an ID that has been reused. Update description. 2001-04-09 18:45:02 +00:00
n_hibma
9bf2f7cd42 Add the Abocom URE 450 ethernet adapter.
Submitted by:   dima@bog.msu.su
2001-04-09 18:44:11 +00:00
n_hibma
85210017e9 Regen. 2001-04-09 18:26:18 +00:00
n_hibma
0ee7ccc115 Update the description for the EPSON PID 0x010a. It seems to be reused in
the 8700 series.
2001-04-09 18:22:20 +00:00
n_hibma
0433c2a4c3 Regen. 2001-04-09 18:19:41 +00:00
n_hibma
e9b2415293 Add the Omni 56K Plus modem
Submitted by:	kazarov@izmiran.rssi.ru
2001-04-09 18:19:20 +00:00
sobomax
c6519e3e03 Allow user to omit font size specification when loading a font. In addition
the following fixes had been made:

- check the size of the font being loaded and compare it with possible sizes
  to minimise possibility of loading something that is not a fontfile at all
  and turning console screen into garbage;

- prevent buffer overflow (and coredump as a result ) when loading valid
  uuencoded file with size that exceeds allocated buffer;

- correct and improve several error messages.

Approved by:	-audit, -hackers (silently)
2001-04-09 17:24:29 +00:00
sobomax
d06e42bb7e Whitespace only: convert several tabs into spaces to make style consistent. 2001-04-09 16:55:32 +00:00
jkh
85bdccd340 Clarify that we're talking about KBytes per second vs kBits per second.
Reminded by:	bde
2001-04-09 16:49:50 +00:00
sobomax
08cc70e40d Whitespace only: Convert several tabs into spaces, to make style consistent. 2001-04-09 16:36:48 +00:00
gallatin
ef0899506b Document clear_error command on sable/lynx.
Thanks to Timothy D. First <firsttim@msu.edu> for figuring this one out
2001-04-09 14:21:24 +00:00
ru
c809c96955 Merge in latest CSRG revisions:
- .Fn and .Fc now print a final semicolon (`;') after a
  function declaration in the SYNOPSIS
- .%I implemented
- .At outputs ``AT&T UNIX'' if called without arguments
- minor cleanup

Obtained from:	CSRG archives
2001-04-09 13:02:20 +00:00
brian
758d5927b5 `|'' should be more binding than `!'' so that this isn't broken:
if ! echo bla | wc -c ; then
		echo broken
	fi

Obtained from: NetBSD
2001-04-09 12:46:19 +00:00
cg
e8d6cf8f4b enable the rate conversion feeder.
the main benefit this gives for now is that via686 audio devices on
motherboards with ac97 codecs that do not support vra will be able to use
sample rates other than 48khz.
2001-04-09 12:04:44 +00:00
greid
bb5c93f5b8 Change the behaviour of mixer slightly such that not explicitly specifying
a mixer device will set/get the master volume levels

PR:		25156
Submitted by:	Tony Finch <dot@dotat.at>
Reviewed by:	cg, nik
2001-04-09 11:10:34 +00:00
n_hibma
4e9569652d Remove a stale file. 2001-04-09 10:28:33 +00:00
bp
92df09fa74 Add function prototypes and base module for kernel side iconv library.
Add simple "xlat" converter which performs 8to8 table based conversion.
Unicode converter will be added in the near future.

Reviewed by:			silence on arch@
Files placement reviewed by:	bde
Obtained from:			smbfs
2001-04-09 09:39:29 +00:00
imp
333537cac4 Two minor fixes:
o Change the number of init tries from 5 to a #define.
	o Allow up to 5s rather than 2s for commands to complete.  This
	  is still much less than 51 minutes, but makes my intel card init
	  with more reliability than before.
2001-04-09 06:33:36 +00:00
mjacob
49215b31ce Correctly initialize free_ccbq so that if we fail to attach (as is
possible for some systems where the device is there, but the BIOS
hasn't allocated memory resources for it), we don't panic.

Submitted by:	 Gerard Roudier
2001-04-09 05:41:41 +00:00
obrien
c86966a7ca Add FreeBSD IDs to some files and make the others consistent in style. 2001-04-08 23:09:21 +00:00
obrien
11e3cce4ba Fix typo in error message. 2001-04-08 23:02:12 +00:00
greid
dbd4bd55a8 Reinitialise the DSP and mixer after a resume from suspend
PR:		22372
Submitted by:	Hiroyuki Aizu <aizu@jaist.ac.jp>
Reviewed by:	cg
2001-04-08 23:02:06 +00:00