newline, then it all goes horribly wrong when make tries to terminate
the last input line.
This was all ok before the mmap changes (rev 1.169) because the last
32 bytes of the input buffer were never read into.
The non-mmap case has a similar problem.
Bug found because my .depend files don't have a newline at the end of
the .OPTIO|NAL line (don't know if that is a local change).
rename "UVMHIST" option to enable the uvm histories.
TODO:
- make UVMHIST properly depend upon KERNHIST
- enable dynamic registration of histories. this is mostly just
allocating something in a bitmap, and is only for viewing multiple
histories in a merged form.
tested on amd64 and sparc64.
meta_oodate: if a file that was written or linked within our bailiwick,
but outside of .OBJDIR is missing, add it to missingFiles.
If we get to the end of the .meta file without seeing it [re]moved,
then consider the target out-of-date.
methods called Vestigial Time-Wait (VTW) and Maximum Segment Lifetime
Truncation (MSLT).
MSLT and VTW were contributed by Coyote Point Systems, Inc.
Even after a TCP session enters the TIME_WAIT state, its corresponding
socket and protocol control blocks (PCBs) stick around until the TCP
Maximum Segment Lifetime (MSL) expires. On a host whose workload
necessarily creates and closes down many TCP sockets, the sockets & PCBs
for TCP sessions in TIME_WAIT state amount to many megabytes of dead
weight in RAM.
Maximum Segment Lifetimes Truncation (MSLT) assigns each TCP session to
a class based on the nearness of the peer. Corresponding to each class
is an MSL, and a session uses the MSL of its class. The classes are
loopback (local host equals remote host), local (local host and remote
host are on the same link/subnet), and remote (local host and remote
host communicate via one or more gateways). Classes corresponding to
nearer peers have lower MSLs by default: 2 seconds for loopback, 10
seconds for local, 60 seconds for remote. Loopback and local sessions
expire more quickly when MSLT is used.
Vestigial Time-Wait (VTW) replaces a TIME_WAIT session's PCB/socket
dead weight with a compact representation of the session, called a
"vestigial PCB". VTW data structures are designed to be very fast and
memory-efficient: for fast insertion and lookup of vestigial PCBs,
the PCBs are stored in a hash table that is designed to minimize the
number of cacheline visits per lookup/insertion. The memory both
for vestigial PCBs and for elements of the PCB hashtable come from
fixed-size pools, and linked data structures exploit this to conserve
memory by representing references with a narrow index/offset from the
start of a pool instead of a pointer. When space for new vestigial PCBs
runs out, VTW makes room by discarding old vestigial PCBs, oldest first.
VTW cooperates with MSLT.
It may help to think of VTW as a "FIN cache" by analogy to the SYN
cache.
A 2.8-GHz Pentium 4 running a test workload that creates TIME_WAIT
sessions as fast as it can is approximately 17% idle when VTW is active
versus 0% idle when VTW is inactive. It has 103 megabytes more free RAM
when VTW is active (approximately 64k vestigial PCBs are created) than
when it is inactive.
The prior definition of sievert was, as far as I can tell, entirely wrong.
Caution: while "gray" and "sievert" have the same dimensionality,
they're not interchangeable -- you need to multiply by a fudge factor
that varies depending on the type of radiation and the tissue it's
affecting. (Dimensional analysis is often not a substitute for knowing
what you're doing.)
It would be nice if units had a way to warn users when they're trying
to do something that doesn't make sense, since there are lots of ways
to do so, but it doesn't, and it wouldn't be easy to arrange in the
general case.
parse quota plists; as well as a getfsquota() function to retrieve quotas
for a single id from a single filesystem (whatever filesystem this is:
a local quota-enabled fs or NFS). This is build on functions getufsquota()
(for local filesystems with UFS-like quotas) and getnfsquota();
which are also available to userland programs.
move functions from quota2_subr.c to libquota or libprop as appropriate,
and ajust in-tree quota tools.
move some declarations from kernel headers to either sys/quota.h or
quota/quota.h as appropriate. ufs/ufs/quota.h still installed because
it's needed by other installed ufs headers.
ufs/ufs/quota1.h still installed as a quick&dirty way to get a code
using the old quotactl() to compile (just include ufs/ufs/quota1.h instead of
ufs/ufs/quota.h - old code won't compile without this change and this is
on purpose).
Discussed on tech-kern@ and tech-net@ (long thread, but not much about
libquota itself ...)
* write via libpcap (since i thought there would be some fancy
api to deal with endianness. after doing 80% of the work i
noticed there wasn't, but went ahead anyway)
only the in-memory one. Since the in-memory one uses struct timeval
and the on-disk one uses 32bit time_t, things didn't work so well
on -current. Generate a suitable local packetheader to fix things.
(don't think it's worth writing via libpcap for something as simple
as this)
noticed both by bouyer and the shmif_dumpbus test
mapped. (I had a very interesting time last night trying to figure
out what was going when things apparently got compiled with a 64bit
time_t on nb5. this caused only 4k of the bus file to be mapped...)
_rtld_tls_allocate and _rtld_tls_free. libpthread uses this functions to
setup the thread private area of all new threads. ld.elf_so is
responsible for setting up the private area for the initial thread.
Similar functions are called from _libc_init for static binaries, using
dl_iterate_phdr to access the ELF Program Header.
Add test cases to exercise the different TLS storage models. Test cases
are compiled and installed on all platforms, but are skipped on
platforms not marked for TLS support.
This material is based upon work partially supported by
The NetBSD Foundation under a contract with Joerg Sonnenberger.
It is inspired by the TLS support in FreeBSD by Doug Rabson and the
clean ups of the DragonFly port of the original FreeBSD modifications.
cvs. This will be used for the upcoming pkgsrc package of window.
I am not copying the code to othersrc because I want to keep things as
simple as possible for now. When we remove window from src, the code will
be moved to othersrc and any improvements (such as autoconfification) can
be done there.
to store disk quota usage and limits, integrated with ffs
metadata. Usage is checked by fsck_ffs (no more quotacheck)
and is covered by the WAPBL journal. Enabled with kernel
option QUOTA2 (added where QUOTA was enabled in kernel config files),
turned on with tunefs(8) on a per-filesystem
basis. mount_mfs(8) can also turn quotas on.
See http://mail-index.netbsd.org/tech-kern/2011/02/19/msg010025.html
for details.
Also fix handling of sysV substitutions when lhs and variable are empty.
Also that modifiers do not cause errors during conditional tests
when undefined variables should otherwise be ok.
Ie. .if defined(nosuch) && ${nosuch:Mx} != ""
continue". This has been there since 1.1 but I don't think it was
intentional. If anyone actually cares about the blank line being there
for some reason, go ahead and revert this change...
joerg