, to see the recent improvements.
>
> * The amount of stuff downloaded by
> cd /usr/ports/devel/git ; make fetch-recursive
> is, shall we say, impressive.
I use the devel/hg-git port to pull all the git trees I need to access using
mercurial.
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irtual usb controller and device that you control the card with?
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Name" that would
> be connected to a lock.
My guess would be:
kern/vfs_cache.c:151 static struct rwlock cache_lock;
kern/vfs_cache.c:152 RW_SYSINIT(vfscache, &cache_lock, "Name Cache");
The CACHE_*LOCK() macros.c in vfs_cache use cache_lock, so you've got lots
of po
You might even be able to write functions that could be passed to funopen().
Then you'd have a regular FILE* that you could call with regular stdio
functions. Getting the buffering right for good performance might get
tricky, though.
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ry long time.
http://lists.freebsd.org/pipermail/freebsd-hackers/2009-March/027918.html
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Index: ps.1
===
--- ps.1 (revision 219700)
+++ ps.1 (working copy)
@@ -587,6 +587,8 @@ symbolic process
In the last episode (Mar 16), Kostik Belousov said:
> On Wed, Mar 16, 2011 at 12:56:14PM -0500, Dan Nelson wrote:
> > In the last episode (Mar 16), Thiago Damas said:
> > > Hi,
> > > without procfs, there is a way to get usertime and systime from a
> > > ru
oot in your BIOS, which you can use to
determine how much of the single-process speedup is due to that.
Unrelated but still interesting note on your particular CPU:
http://www.passmark.com/forum/showthread.php?t=2256
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ople are just using
"last entry + 1" when adding new ones, they should probably start filling
the gaps instead. The 100s and 200s are pretty dense, but 350-399 only has
5 entries, 400-499 has 4, 600-699 has 7, 700-799 has 3, etc.
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> linked (uses shared libs), FreeBSD-style, not stripped
> /host/sony/usr/src/usr.bin/who/who
> fails with
> Illegal instruction
Were the crt*.o files on your fast machine also compiled with -march=i586 ?
If you run gdb on the core file, can you determine
gb or so. Anything more than 4GB of
swap is probably never going to be used, and if it is used, you're just
going to thrash your swap device. If you have 128GB of RAM and need to swap
to disk, you desperately need more RAM, not swap :)
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Dan Nelson
In the last episode (Sep 05), Eitan Adler said:
> On Mon, Sep 5, 2011 at 3:48 PM, Dan Nelson wrote:
> > In the last episode (Sep 05), Sean Hamilton said:
> >> What is the state of the art for the recommended amount of swap in
> >> FreeBSD? Both "normal" s
y. The nss module is a tiny plug that talks to
nslcd using a simple protocol. It really reduces the socket count to your
ldap server, and removes the potential namespace problems caused by
dlopening libldap.so in every process.
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with
the KERN_PROC_PID flag, you can get the stats for a single processs by pid.
If you want even more detail, you can look at the source to the procstat
command, which uses some other calls to dump the vm map of processes.
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(1MB). PWD_STORAGE_MAX is
only checked within that getpw() function, though, so it's possible that an
nss library might return an even longer string to a get*_r call. It's up to
you to decide what your own limit is :)
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_
In the last episode (Oct 24), Christopher J. Ruwe said:
> On Sun, 23 Oct 2011 19:10:34 -0500
> Dan Nelson wrote:
> > In the last episode (Oct 23), Christopher J. Ruwe said:
> > > I need to get the maximum size of an pwd-entry to determine the
> > > correct buffersize
In the last episode (Oct 25), Christopher J. Ruwe said:
> On Mon, 24 Oct 2011 15:42:10 -0500
> Dan Nelson wrote:
> > In the last episode (Oct 24), Christopher J. Ruwe said:
> > > On Sun, 23 Oct 2011 19:10:34 -0500
> > > Dan Nelson wrote:
> > > > In the
88318 p0 S+ 0:00.00 sh xxx
> 88320 p0 R+ 0:00.00 sh xxx
> 88321 p0 R+ 0:00.00 sh xxx
>
> Can someone explain this ?
What does your script do? If it contains subshells or pipelines, the main
process will fork child processes to handle those.
--
In the last episode (Nov 02), Dan Nelson said:
> In the last episode (Nov 02), Mark Saad said:
> > Hackers
> > What is going on here, if I run the following shell script, what is
> > the expected output . The script is named xxx
> >
> > #!/bin/sh
>
>
> -Brandon
>
>
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ut you can tell the scheduler not to
use it, via the cpuset command. For example, "cpuset -s 1 -l 0,1" will
change the mask for cpuset 1 (the default set) to only allow cpus 0 and 1.
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f
t; would I be correct in guessing that they are more than likely for most of
> these large blocks?
Note that libmilter may do a lot of mallocs on its own, especially if you
are examining the message body. There are also jemalloc tuning options that
may lower total meory usage if you are
ph basics: BFS,
> DFS, connected components, topological sort, etc
Graphviz would be the most popular package for stuff like this, I think, and
it includes a C API. It's licensed under the Eclipse Public License.
http://www.graphviz.org/
http://www.graphviz.org/Gallery.php
http://ww
uot; according to arbitrary ruling.
On the other hand, zsh runs the last component of a pipeline in the parent
shell. The usual model is "do work in pipeline, process results in final
component", and being able to simply set variables there that can be used in
the rest of the script is ver
by making sure you have portfast enabled on
the Cisco for any non-switch ports, btw. Takes the port setup time
down from 30 seconds to under 5.
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ents:
Exit false (1).
1 argument:
Exit true (0) if $1 is not null; otherwise, exit false.
...
Unary operators shouldn't get parsed as such unless there are two
arguments.
> http://www.marcuscom.com/downloads/test.c.diff
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ow.
Take a look at how /usr/bin/fstat does it. There is apparently a
"kern.file" sysctl that holds the open file table, but fstat digs
through kernel memory.
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DB is built into libc and is used for the hashed passwd & termcap
databases.
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To unsubscribe, s
o grant the anonymous user read access to
user/group names and group membership attributes. That way you can do
simple things like name->uid lookups without having to bind at all.
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freebsd-hackers@f
already. It's hidden under the PPP_DEFLATE kernel option (the source
is in sys/net/ppp_deflate.c). The functions are all prefixed with z_,
but apart from that it works the same as userland zlib.
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your method and compare it to the existing gzip and
lzjb algorithms.
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ec on my non-idle dual pIII-900 system. Try
truss'ing your program as it runs; maybe the program is doing some
extra syscalls you aren't aware of?
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In the last episode (Jan 03), Metin KAYA said:
> Hi all,
>
> How select(2) will behave if I give the "utimeout" parameter as
> NULL?
>From the man page:
If timeout is a null pointer, the select blocks indefinitely.
http://www.freebsd.org/cgi/man.cgi?quer
or placing in a program
and using truss to print the result), but it has rotted. I'm attaching
it in case anyone wants to make it work again.
Since you got EOF status for both the read and write halves of the
socket, why not just close the fd? From my reading of the manpages,
unless you spe
-v" today?
>
> I have to agree with this.
>
> I will submit the port without -v/--version
> and worse comes to worse, add it in later if enough people complain.
On the other hand, some programs that are contributed sources or are
developed outside the FreeBS
file generated by /usr/bin/gzexe; that's one way to
do it (basically, determine the number of lines in your shell script,
append your binary file to the end of the script, and use tail to
extract only the binary file to a tempfile).
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Dan Nelson
rk a child to bzero it. If the child
dies, unmmap and return NULL. If the child succeeds, use the memory.
This memory won't be freeable with malloc(), though.
-Dan Nelson
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like Quake? How about just calling it
"games" ?
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per re-implementing it is at http://renoir.vill.edu/~yhang .
It looks like ports/ftp/ncftp3 has all the features of bftp (scheduled
background transfers, auto-resume, multiple file xfers) except it
doens't email the user then the transfer is done.
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were a lot of tools floating around.
I like one called Font Mania!; the author doesn't seem to have a web
presence, but an URL is http://jconroy.dragonfire.net/zzt/utilities/Fm.zip
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with &quo
P-provided pop account. (Costs less that way, with my current
> ISP.)
If your ISP runs sendmail (possibly other MTAs), you can use the
user+det...@host.com syntax. All mail is sent to the "user" mailbox,
but filters like procmail see the "detail" portion too, and can fi
ision 1.17
date: 1999/06/19 19:49:32; author: green; state: Exp; lines: +25 -21
Miscellaneous dd(1) changes: mainly fixing variable types (size_t,
ssize_t, off_t, int, u_int64_t, etc.). dd(1) should now work properly
with REALLY big amounts of data.
Should be a -stable candidate by now (3 months o
ave a testcase that shows otherwise? GDB might just enumerate the
currently active threads starting from 1.
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x is not just caching the data? I know of at least
> one system where it takes more than 100ms to query the battery state due
> to extremely slow hardware, I wouldn't be surprised if you can do worse.
I have an old Dell laptop where it takes almost a full second to fetch
battery data v
In the last episode (Jun 18), Zane C.B. said:
> Any one know of any recent documentation for adding a sysctl to a
> kernel module for FreeBSD 6 and 7?
man 9 sysctl
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ng newfs(8) while the system is multi-
> user.
# truss kgdb < /dev/null |& grep /dev/mem
open("/dev/mem",O_RDONLY,00) = 4 (0x4)
#
Read-only opens of /dev/mem are allowed. "kgdb -w" should fail,
however.
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failed packet that had to go through a uid check on the way
to the deny rule.
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In the last episode (Sep 09), Daan Vreeken said:
> On Monday 08 September 2008 22:03:29 Dan Mahoney, System Admin wrote:
> > On Mon, 8 Sep 2008, Dan Nelson wrote:
> > > In the last episode (Sep 08), Dan Mahoney, System Admin said:
> > >> I have the following ru
ystem in folder "/usr/local/Diablo-jre1.6.0/lib/amd64/libjava.so
Are you running an amd64 winpower binary? If not, you'll probably need
to install an x86 java. You can't mix libraries for different
architectures.
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__
d up with a horribly-corrupted filesystem, since neither one is aware
of changes the other makes. You would need a shared-storage cluster
filessytem to be able to do that (or mount the volume read-only on both
servers).
Mount the filesystem on one server only, then access it via NFS from
the other.
m can
> buffer enough data for it.
Why not keep reading until you reach your desired compression block
size? Bzip2's default blocksize is 900k, for example.
> b) Is there any objection to the following patch to cat:
It might be simpler to just use "d
In the last episode (Oct 19), Ivan Voras said:
> Dan Nelson wrote:
> > In the last episode (Oct 18), Ivan Voras said:
> >> I'm working on a program that's intended to be used as a "filter",
> >> as in "something | myprogram > file".
In the last episode (Oct 19), Ivan Voras said:
> 2008/10/19 Dan Nelson <[EMAIL PROTECTED]>:
> > In the last episode (Oct 19), Ivan Voras said:
> >> Of course. But that's not the point :) From what I see (didn't
> >> look at the code), Linux for exampl
c to dynamic-linked /bin and /sbin,
some shared libraries are needed during the boot process. Those
libraries live in /lib, and since there are no 32-bit binaries required
to boot a 64-bit system, there is no need for a /lib32.
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_
er of simultaneous I/Os ZFS will try to send to each disk,
which will let your reads compete a little better with other I/O. On
ATA or SATA disks, you might want to set it to 2.
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freebsd-hackers@freebs
ump 0 Nov 12 17:42 a
-rw-r--r-- 1 root wheel uchg 0 Nov 12 17:42 b
#
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In the last episode (Nov 13), Charles Darwin said:
> On 12-Nov-08, at 6:43 PM, Dan Nelson wrote:
> > In the last episode (Nov 12), Charles Darwin said:
> >> Hi all,
> >>
> >> Title is the question actually: Is chflags' "nodump + sunlnk" =
> &g
ntf("munmap B\n");
munmap(b, 64 * 1024 * 1024);
system(cmd);
return 0;
}
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ly
> allowed to call async-signal-safe functions in the child forked from
> a threaded process. If you are trying to do anything other than
> that, it may or may not work on FreeBSD, but it is not guaranteed and
> is not portable.
The Rationale section of the pthread_atfork()
e got ZFS, you can snapshot your filesystems, and if portupgrade
fails, roll back to the snapshot and do it again to see if it happens on the
same port a second time. Or if you know ruby, you could instrument the code
that checks for port build errors and see if it's got a bug in it...
--
ing so much trouble finding what you were
looking for, and then I realized I have a patch that I have never submitted
a PR for: the addition of "systime" and "usertime" ps keywords :) It simply
reads the rusage struct, and returns the same values that getrusage() does.
--
ible by calling changed functions :(
> What I do wrong ?
/usr/src/contrib is a repository of 3rd-party source trees, and they're not
meant to be built from. Try running your "make ; make install" in
/usr/src/lib/libpcap instead.
--
Dan Nelso
p.org/onlinepubs/9699919799/functions/readlink.html
> I will be very thankful if you can help me with it.
>
> #include
>
> int readlink(void *a, void *b)
> {
> exit(0);
> }
>
> int main(int argc, char **argv)
> {
> printf(&q
at a time to its
output callback function. Maybe a mutex can be added inside kvprintf if
TOCONS is set in pca.flags? So instead of malloc'ing a buffer, just make
the 2nd kvprintf call wait for the first to finish.
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command that can print a huge number of low-level
counters, including PCI DMA counts. If it's supported under OpenSolaris
it should be easy to check and see whether it's dependant on Sun hardware or
works with any PC (just boot it up and run
d individually. Then you get accurate numbers (but
you have to manually sum up the threads usage if you want to see the total
%CPU for an entire process).
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n("setaffinity failed");
/* Do CPU-intensive stuff here */
return 0;
}
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> > /usr/include/sys/user.h.
>
> Unfortunately, as far as I can see the kinfo_proc structure only contains
> the sum of user time and system time and not the two values separately,
> or have I missed something?
Take a look at the the ki_rusage struct inside kinfo_proc.
--
uot;, etc requests one after
another, so a high-latency connection will take a performance hit due to the
latency in issuing each command. According to the mount_nfs manpage, it
looks like there is some prefetching that can be enabled with the "-a ##
In the last episode (Dec 21), Zaphod Beeblebrox said:
> On Sun, Dec 20, 2009 at 12:27 AM, Dan Nelson wrote:
> > In the last episode (Dec 19), Zaphod Beeblebrox said:
> >> Here's an interesting conundrum. I don't know what's different between
> >> the TC
ome sort, and
only lock the mutex when pushing/popping elements. Then worker processes
can run without holding the mutex, and will be fairly scheduled by the
kernel.
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ee one thread with a CPU value of "8.08" (or
so), and other values for the rest. Ideally, top and ps would total up all
the per-thread CPU counts when displaying the per-process numbers, but it
doesn't seem to.
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e allocated or free. I expected to find a bitmap somewhere that
malloc() sets and free() clears, but I don't see it. Maybe some kernel
hacker can explain it better :) Regardless, the size of the allocation at
this point isn't important, since you know all the items in th
equested
config:
NAMESTATE READ WRITE CKSUM
dummy DEGRADED 0 0 0
raidz1DEGRADED 0 0 0
md1 ONLINE 0 0 0
md2 OFFLINE 0 0 0
md3 ONLINE 0 0 0
msg.panic.requestSupport.withLogAndCore] Please
> request support and include the contents of the log file and core
> file. [msg.panic.requestSupport.vmSupport.vmx86]
> Sep 19 05:19:30.296: vcpu-0| To collect data to submit to VMware
> support, run "vm-support".
> Sep
(0x7fa047716000)
libfreetype.so.6 => /usr/lib64/libfreetype.so.6 (0x7fa04759b000)
libpng.so.3 => /usr/lib64/libpng.so.3 (0x7fa04745f000)
libz.so.1 => /lib64/libz.so.1 (0x7fa04734b000)
libart_lgpl_2.so.2 => /usr/lib64/libart_lgpl_2.so.2 (0x7fa047234
'd sure vote for an audit of
> this behavior as a summer of code project.
I don't think the porter's handbook mentions the DEPENDS_* comparison
operators at all, so unless you read (and understood) the
${deptype:L}-depends target in bsd.port.mk, you might not know it existed.
--
In the last episode (Apr 22), Dan Nelson said:
> In the last episode (Apr 22), Steve Franks said:
> > (such as myself) incorrectly pointing a port at libpng.5 instead of any
> > libpng, or libpng >= 5. Once the ports tree is 'poisoned' in this
> > fashion, there
on't remember whether
fsync flushes metadata though)
-Dan Nelson
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the next step would be to make the kernel realize that two cards
ifconfig'd with the same MAC address are meant to be bonded together as
one route (lots of switches support this). I have some machines that
I'd love to be able to get 20MB/sec bandwidth between transparently.
-Dan
In the last episode (May 15), Greg Lehey said:
> > And the next step would be to make the kernel realize that two cards
> > ifconfig'd with the same MAC address are meant to be bonded together as
> > one route (lots of switches support this). I have some machines that
> > I'd love to be able to ge
In the last episode (May 15), Greg Lehey said:
> OK, now maybe I'm missing something here. But an Ethernet address is
> used to identify a board. Arp binds it to an IP address. An IP
> address is bound to a network. So if you're on a different network,
> you get a different IP address. Why do
to idprio the rc5client, but
within a day or do the machine would lock up. Rc5client would get a
lock on the root of the filesystem at idprio, and if there was another
process running at 100% CPU, rc5client would never get a chance to
unlock, causing all the other processes on the system to hang
t
loop it'll never exit.
You can check to see if this is the problem by running truss -p 39448 .
Check to see if it's doing the same read() or write() over and over.
Tin used to have this bug, but I thought it was fixed long ago. Lynx
shoudln't have any problems either.
, etc.
/usr/share/examples/cvsup/cvs-supfile is a good starting point.
-Dan Nelson
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ails
> would be helpful, but if anyone is at all interested in the I would
> be happy to supply more :).
Install the linux_devel port and resign yourself to building Linux
executables whenever you have to talk to Oracle.
-Dan Nelson
dnel...@emsphone.com
To Unsubscribe: send ma
y routine named ftw() (XPG4 standard) in AIX and HP-UX. However, I
> can not find the same routine in FreeBSD manual pages. Maybe it is not
> supported by FreeBSD.
There is a set of fts* funtcions in FreeBSD (man fts); it looks like
the options are very similar.
-Dan Nelson
to mask the
condition, and one to restore the previous mask. If you want to
completely ignore floating point errors, call fpsetmask(0) at the top
of main().
I scanned the mailinglists and the thread that covers this issue most
completely is
http://www.freebsd.org/cgi/mid.cgi?id=199710101907.oaa09.
mpletely the wrong mailing list for this question, but take a
look at the getrusage() function.
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To uns
is could be either timestamp based (file not modified in 60 seconds
== done), or if you know the file format, you may be able to validate
the contents (check for zipfile end-of-file marker, etc).
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freebs
>
> It gives us the ability use modules to provide arbitrary backends for a
> variety of interfaces to system databases. For instance getpw*(),
> gethost*(), etc.
Michael's patch itself adds caching to our nsswitch implementation,
which dramatically improves performance o
ry.
On all my FreeBSD boxes from 128MB to 1GB of RAM, I get the exact same
heuristic values as you, so I'm not sure whether the code works at all.
I seem to remember having the opposite problem on a memory-limited
machine which insisted in allocating a relatively huge percentage of
RAM for a
of physmem;
> % 14 static int mib[] = { CTL_HW, HW_PHYSMEM };
> % 15 static size_t miblen = sizeof(mib) / sizeof(mib[0]);
> % 16
> % 17 if (sysctl(mib, miblen, &physmem, &len, NULL, 0) != 0)
> % 18 err(1, "sysctl
I've traced down the issue: tcpdump now creates lines like:
>
> IP > ...
>
> And tcpdump2xplot doesn't want to see that 'IP' field. I'll try to get a
> patch cobbled...
You'll probably get better results using the tcptrace por
still depends on what daemon you're talking about. syslogd, for
example, re-reads /etc/syslog.conf and reloads its logfiles on SIGHUP.
Luckily, most base daemons are started from their own /etc/rc.d/*
scripts which know how that particular program works, so y
r, and what the kernel
thinks you're waiting for :)
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erator" user has read access to the raw device files
that filesystems are mounted on. That's how it can do backups with the
dump command. It has no special access to mounted filesystems
themselves.
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_
. -type d | tar Tcfn - - | ( cd /otherpath ; tar xf - )"
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l to get the load average. A
simpler way is to just call the getloadavg() function; see its manpage
for more info.
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nd fix addresses the problem that
with a single dd, you are either reading or writing. If you pipe the
first dd into a second one, it'll let you run at the max speed of the
slowest device.
dd if=/dev/ad2 conv=noerror,sync bs=64k | dd of=/dev/ad3 bs=6
inside):
>
> http://kaya.nov.net/frol/patches/atitvout-0.4-bsd2.diff
If this is anything like vm86 mode, check out the i386_vm86 manpage.
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