Commit Graph

31 Commits

Author SHA1 Message Date
David Greenman
dd0b2081f4 Implemented zero-copy TCP/IP extensions via sendfile(2) - send a
file to a stream socket. sendfile(2) is similar to implementations in
HP-UX, Linux, and other systems, but the API is more extensive and
addresses many of the complaints that the Apache Group and others have
had with those other implementations. Thanks to Marc Slemko of the
Apache Group for helping me work out the best API for this.
Anyway, this has the "net" result of speeding up sends of files over
TCP/IP sockets by about 10X (that is to say, uses 1/10th of the CPU
cycles) when compared to a traditional read/write loop.
1998-11-05 14:28:26 +00:00
Bruce Evans
bef7db2e66 Moved definition of fscale from param.c to kern_synch.c where it
should always have been (it has no user-servicable parts even at
compile time) and staticized it.
1998-07-11 13:06:41 +00:00
Poul-Henning Kamp
8cb5266728 Add 3 sysctl variables for future use by ps)1_ 1998-06-30 21:25:58 +00:00
Bruce Evans
df471779ea Round tickadj up. This prevents tickadj from being 0 when HZ > 500,
which makes adjtime(2) useless and confuses xntpd(8) into refusing
to start even when it would use the kernel PLL instead of adjtime().
The result is the same as recommended by tickadj(8), at least when
HZ divides 10^6.  Of course, you wouldn't want to actually use
adjtime() when HZ is large.  In the silly boundary case of HZ == 10^6,
tickadj == tick == 1 so the clock stops while adjtime() is active.
1998-06-21 12:22:35 +00:00
Garrett Wollman
98271db4d5 Convert socket structures to be type-stable and add a version number.
Define a parameter which indicates the maximum number of sockets in a
system, and use this to size the zone allocators used for sockets and
for certain PCBs.

Convert PF_LOCAL PCB structures to be type-stable and add a version number.

Define an external format for infomation about socket structures and use
it in several places.

Define a mechanism to get all PF_LOCAL and PF_INET PCB lists through
sysctl(3) without blocking network interrupts for an unreasonable
length of time.  This probably still has some bugs and/or race
conditions, but it seems to work well enough on my machines.

It is now possible for `netstat' to get almost all of its information
via the sysctl(3) interface rather than reading kmem (changes to follow).
1998-05-15 20:11:40 +00:00
Guido van Rooij
d3c0af6943 Raise ncallout from NPROC + 16 to NPROC + 16 + MAXFILES. This shold
prevent a possible DOS attack. The proper fix (to dynamically grow
the callout list) is in the make.
Submitted by:	Paul Traina
1998-02-27 19:58:29 +00:00
Bruce Evans
ac5fcb6d4d Removed unused #includes. 1997-06-14 11:38:46 +00:00
Peter Wemm
6875d25465 Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.
1997-02-22 09:48:43 +00:00
Bruce Evans
5131d64e0c Removed option EXTRAVNODES. All versions of FreeBSD-2.x have a sysctl
variable `kern.maxvnodes' which gives much better control over vnode
allocation than EXTRAVNODES (except in -current between 1995/10/28 and
1996/11/12, kern.maxvnodes was read-only and thus useless).
1997-01-16 13:16:10 +00:00
David Greenman
649c409d03 Fix bug related to map entry allocations where a sleep might be attempted
when allocating memory for network buffers at interrupt time. This is due
to inadequate checking for the new mcl_map. Fixed by merging mb_map and
mcl_map into a single mb_map.

Reviewed by:	wollman
1997-01-15 20:46:02 +00:00
Jordan K. Hubbard
1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
Peter Wemm
114a8cff43 Add an option "EXTRA_VNODES" to cause an extra number of vnode structures
to be allocated at boot time.  This is an expensive option, as they
consume physical ram and are not pageable etc.  In certain situations,
this kind of option is quite useful, especially for news servers that
access a large number of directories at random and torture the name cache.
Defining 5000 or 10000 extra vnodes should cut down the amount of vnode
recycling somewhat, which should allow better name and directory caching
etc.

This is a "your mileage may vary" option, with no real indication of
what works best for your machine except trial and error.  Too many will
cost you ram that you could otherwise use for disk buffers etc.

This is based on something John Dyson mentioned to me a while ago.
1996-05-31 00:20:34 +00:00
Garrett Wollman
cb7545a995 Allocate mbufs from a separate submap so that NMBCLUSTERS works as
expected.
1996-05-10 19:28:55 +00:00
Poul-Henning Kamp
e911eafcba removed:
CLBYTES PD_SHIFT PGSHIFT NBPG PGOFSET CLSIZELOG2 CLSIZE pdei()
        ptei() kvtopte() ptetov() ispt() ptetoav() &c &c
new:
        NPDEPG

Major macro cleanup.
1996-05-02 14:21:14 +00:00
Poul-Henning Kamp
f8845af0db First pass at cleaning up macros relating to pages, clusters and all that. 1996-05-02 10:43:17 +00:00
Jeffrey Hsu
70b012cab2 Merge in Lite2: proc LIST changes.
Reviewed by:	david & bde
1996-03-11 05:52:50 +00:00
Peter Wemm
4bd4912865 Add more options into the conf/options and i386/conf/options.i386 files
and the #include hooks so that 'make depend' is more useful.  This
covers most of the options I regularly use (but not all) and some other
easy ones.
1996-03-02 18:24:13 +00:00
Garrett Wollman
50c73f3620 Convert SYSV IPC to new-style options. (I hope I got everything...)
The LKMs will need an extra file, to come later.
1996-01-04 20:29:06 +00:00
Poul-Henning Kamp
154c04e573 Last commit this round: Staticize.
we are now down to about 1146 symbols being global, of which
I estimate that about 100 are validly so.
1995-12-10 13:45:30 +00:00
Bruce Evans
28f8db1403 Eliminate sloppy common-style declarations. There should be none left for
the LINT configuation.
1995-07-29 11:44:31 +00:00
David Greenman
3d5e37c501 Removed "GATEWAY" consideration when calculating number of mbuf clusters.
It now always uses the value that was used for the GATEWAY case.
1995-06-29 08:21:32 +00:00
David Greenman
ac7e6123a6 Killed "TIMEZONE" and "DST" options. They have been forced to 0 by config
for more than a year now. Moved the declaration of 'tz' into kern_time.c.
1995-06-29 07:07:00 +00:00
David Greenman
cddc961a83 Made "NMBCLUSTERS" calculation dynamic and fixed bogus use of "NMBCLUSTERS"
in machdep.c (it should use the global nmbclusters). Moved the calculation
of nmbclusters into conf/param.c (same place where nmbclusters has always
been assigned), and made the calculation include an extra amount based
on "maxusers". NMBCLUSTERS can still be overrided in the kernel config
file as always, but this change will make that generally unnecessary. This
fixes the "bug" reports from people who have misconfigured kernels seeing
the network "hang" when the mbuf cluster pool runs out.

Reviewed by:	John Dyson
1995-05-25 07:36:24 +00:00
Guido van Rooij
e6373c9ec0 Implement maxprocperuid and maxfilesperproc. They are tunable
via sysctl(8). The initial value of maxprocperuid is maxproc-1,
that of maxfilesperproc is maxfiles (untill maxfile will disappear)

Now it is at least possible to prohibit one user opening maxfiles

-Guido

Submitted by:
Obtained from:
1995-02-20 19:42:42 +00:00
Joerg Wunsch
3ab1adc555 Alow overriding of the various SHM* options.
Submitted by:	Heikki Suonsivu <hsu@fx7.cs.hut.fi>
1995-02-16 11:29:19 +00:00
David Greenman
ec2bb6ade1 Increase maxfiles to NPROC*2. This makes the per-process open file limit
highly bogus, however, and this needs to be fixed.
1995-01-12 03:38:12 +00:00
David Greenman
0d94caffca These changes embody the support of the fully coherent merged VM buffer cache,
much higher filesystem I/O performance, and much better paging performance. It
represents the culmination of over 6 months of R&D.

The majority of the merged VM/cache work is by John Dyson.

The following highlights the most significant changes. Additionally, there are
(mostly minor) changes to the various filesystem modules (nfs, msdosfs, etc) to
support the new VM/buffer scheme.

vfs_bio.c:
Significant rewrite of most of vfs_bio to support the merged VM buffer cache
scheme.  The scheme is almost fully compatible with the old filesystem
interface.  Significant improvement in the number of opportunities for write
clustering.

vfs_cluster.c, vfs_subr.c
Upgrade and performance enhancements in vfs layer code to support merged
VM/buffer cache.  Fixup of vfs_cluster to eliminate the bogus pagemove stuff.

vm_object.c:
Yet more improvements in the collapse code.  Elimination of some windows that
can cause list corruption.

vm_pageout.c:
Fixed it, it really works better now.  Somehow in 2.0, some "enhancements"
broke the code.  This code has been reworked from the ground-up.

vm_fault.c, vm_page.c, pmap.c, vm_object.c
Support for small-block filesystems with merged VM/buffer cache scheme.

pmap.c vm_map.c
Dynamic kernel VM size, now we dont have to pre-allocate excessive numbers of
kernel PTs.

vm_glue.c
Much simpler and more effective swapping code.  No more gratuitous swapping.

proc.h
Fixed the problem that the p_lock flag was not being cleared on a fork.

swap_pager.c, vnode_pager.c
Removal of old vfs_bio cruft to support the past pseudo-coherency.  Now the
code doesn't need it anymore.

machdep.c
Changes to better support the parameter values for the merged VM/buffer cache
scheme.

machdep.c, kern_exec.c, vm_glue.c
Implemented a seperate submap for temporary exec string space and another one
to contain process upages. This eliminates all map fragmentation problems
that previously existed.

ffs_inode.c, ufs_inode.c, ufs_readwrite.c
Changes for merged VM/buffer cache.  Add "bypass" support for sneaking in on
busy buffers.

Submitted by:	John Dyson and David Greenman
1995-01-09 16:06:02 +00:00
Doug Rabson
3d903220e4 Added SYSV ipcs.
Obtained from: NetBSD and FreeBSD-1.1.5
1994-09-13 14:47:38 +00:00
David Greenman
3c4dd3568f Added $Id$ 1994-08-02 07:55:43 +00:00
Rodney W. Grimes
26f9a76710 The big 4.4BSD Lite to FreeBSD 2.0.0 (Development) patch.
Reviewed by:	Rodney W. Grimes
Submitted by:	John Dyson and David Greenman
1994-05-25 09:21:21 +00:00
Rodney W. Grimes
df8bae1de4 BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00