Matthew Dillon said:
> :> global references across subroutine calls! I'll send Luoqi another email.
> :>
> :> In the case of the NFS stuff, the changes have been pretty well tested
> :> so I think we are in the clear.
> :
> :On a somewhat similar note, what do you think about convert
Matthew Dillon said:
> :> Well, the issue with converting many of the macros to inline functions
> :> is with the embedded goto's and references to variables defined outside
> :> the macros. Converting them to functions would basically require
> :> rewriting a huge chunk of NFS
Dan Root said:
Content-Description: Mail message
>
> Is this normal, or should I look for some process that's thrashing through
> vast amounts of pages in short periods of time?
>
It is normal and expected. A little secret about FreeBSD's VM is that
it works on a page demand type timeclock and n
Brian Dean said:
>
> I'm using a dual 350MHz Dell Precision 410 with 4.0-19990130-SNAP (SMP
> enabled) to prototype a program that uses asynchronous read and write
> (aio_read() and aio_write()), and found that the following simple and
> not very useful program (it's for demonstration purposes onl
Richard Seaman, Jr. said:
>
> As I indicated to you several weeks ago, I think it is possible to have
> a priority inversion problem in spinlocks that spin on sched_yield.
> The yield call, as implemented, partly addresses the issue. However,
> as you commented to me, it does so poorly.
>
> If t
Matthew Dillon said:
> :Matt,
> :
> :Does datasize limit the number of backed pages, or the amount of address
> :space used by a process? I.e., can I grow myself a large chunk of address
> :space using mmap to the same region of a file, and then read into that
> :large chunk (presumably larger tha
When reviewing the VM code regarding another issue (another significant
VM contributor had found an interesting anomoly), I noticed that the
coloring wasn't as complete as it should be.
Attached is a patch that appears to make a reasonable improvement in
performance, when using both my slightly mo
Matthew Dillon said:
>
> Ah, interesting. I understand the second bit. The first bit seems
> somewhat odd, though - the automatic page coloring adjustment made
> by _vm_object_allocate() doesn't work well enough for kmem_object?
>
The problem with it was that there appeared to be a
Matthew Dillon said:
>
> : next_index += PQ_L2_SIZE/4;
> : if (next_index > PQ_L2_MASK)
> : next_index = (next_index + 1) & PQ_L2_MASK;
>
> Oops, make that:
>
> next_index += PQ_L2_SIZE/4;
> if (next_index > PQ_L2_MASK)
> next_index = (next_index
Matthew Dillon said:
>
> Ah, interesting. I understand the second bit. The first bit seems
> somewhat odd, though - the automatic page coloring adjustment made
> by _vm_object_allocate() doesn't work well enough for kmem_object?
>
There appears to be a clash. I haven't really carefu
Matthew Dillon said:
> :maxusers 256
>
> Try reducing maxusers to 128. Another person reported similar behavior
> to me and after a bunch of work he tried going back to a basic
> distribution -- and everything started working again.
>
> It turned out that a maxusers value of
Julian Elischer said:
>
>
> On Tue, 16 Feb 1999, Luoqi Chen wrote:
> > You may try my patch at http://www.freebsd.org/~luoqi, which would allow
> > linux threads to run on SMP.
>
> I've gone through these patches and I can see that they are really needed
> for SMP where address spaces are shared
Luoqi Chen said:
> >
> This seems to be the good old vnode deadlock during vm_fault() that has been
> reported a couple of times, and there's still no satisfactory solution to it:
> fgrep does something like this: (don't ask me why)
>
> addr = mmap(0, len, PROT_READ|PROT_WRITE, MAP_PRIVATE,
Søren Schmidt said:
>
> It "should" work, but the promise support in the old system is, well,
> hacky at best. I'm not sure if Promise supports more than one card
> at a time, but from looking at the chip specs, it should work just
> fine, and if the hardware works, at least the new driver will s
Luoqi Chen said:
> >
> Do you still have that piece of code? Does it handle the case involves more
> than one process? For example, process 1 mmaps file B and reads file A into
> the mmapped region, while process 2 mmaps file A and reads file B, this could
> also result in a deadlock.
>
It used t
Søren Schmidt said:
> It seems John S. Dyson wrote:
> > Søren Schmidt said:
> > >
> > > It "should" work, but the promise support in the old system is, well,
> > > hacky at best. I'm not sure if Promise supports more than one card
> > &
Martin Cracauer said:
> In <199902230725.caa02...@y.dyson.net>, John S. Dyson wrote:
> > Søren Schmidt said:
> > >
> > > It "should" work, but the promise support in the old system is, well,
> > > hacky at best. I'm not sure if Prom
John Polstra said:
> In article <19990228152909.e2...@relay.nuxi.com>,
> David O'Brien wrote:
> > > I keep on hearing about how we're losing because we don't have the 3
> > > month old latest feature
> >
> > With EGCS the issue isn't having the latest 3 mo. feature, but we have a
> > totally BROK
Jordan K. Hubbard said:
> > I can generally build a kernel with EGCS, if I change how the .text and
> > .data are laid out for initialized data. It seems that the initialization
> > code makes assumptions about the order or layout of the initialization
> > data. Once the stuff is made to act more
Chuck Robey said:
> On Mon, 1 Mar 1999, John S. Dyson wrote:
>
> > I can generally build a kernel with EGCS, if I change how the .text and
> > .data are laid out for initialized data. It seems that the initialization
> > code makes assumptions about the order or layo
John Polstra said:
> John S. Dyson wrote:
> > Jordan K. Hubbard said:
> >> > I can generally build a kernel with EGCS, if I change how the .text and
> >> > .data are laid out for initialized data. It seems that the
> >> > initialization
> >>
Brian Feldman said:
> >
> > The lock manager isn't bright enough to detect that the process
> > already holds a read lock when it attempts to get the write lock.
> > Thus, you get the "thrd_sleep" instead of a panic.
> >
> > In short, same bug, different symptoms.
> >
> Ahh, makes sense.
>
> Qu
Eivind Eklund said:
> On Tue, Nov 17, 1998 at 09:49:31PM -0500, HighWind Software Information wrote:
> >
> > After installing the recent libc_r and libc, I'm getting:
> >
> > ld.so failed: Undefined symbol "SYS_kldsym" in
> > make:/usr/lib/aout/libc.so.3.1
> >
> > I also get it sometimes when
Eivind Eklund said:
> On Mon, Mar 08, 1999 at 05:59:05PM -0500, John S. Dyson wrote:
> > Eivind Eklund said:
> > > If you do not know how FreeBSD works to a detailed enough level to NOT
> > > HAVE TO ASK THIS, then you should MAKE WORLD. You should NOT try to
>
Matthew Dillon said:
> :There're a couple of places in swtch.s where code looks like this,
> :
> :#ifdef VM86
> :btrl%esi, _private_tss
> :je 3f
> : ...
> :3:
> :#endif
> :
> :The conditional jump statement doesn't seem right, according to manual,
> :btrl instruction mo
Michael E. Mercer said:
> Hello,
>
> This was posted to freebsd-questions with no reply.
> I tried this and the child process created a core file.
> I also tried the other options and they seem to work.
> Just RFPROC and RFMEM DON'T!
>
rfork(RFMEM) doesn't easily work from C. You need to
create
> On Sat, 20 Mar 1999, John S. Dyson wrote:
>
> > Michael E. Mercer said:
> > > Hello,
> > >
> > > This was posted to freebsd-questions with no reply.
> > > I tried this and the child process created a core file.
> > > I also tried the o
Soren Schmidt said:
>
> DMA support has been added to the ATA disk driver.
> This only works on Intel PIIX3/4, Acer Aladdin and Promise controllers.
> The promise support works without the BIOS on the board,
> and timing modes are set to support up to UDMA speed. This
> solves the problems with h
Alan Cox said:
>
> I've committed the basic infrastructure to improve TLB management
> on SMPs. Translation: this will lead to the elimination of a LOT
> of interprocessor interrupts to invalidate TLB entries. I'll be
> "turning on" the new mechanisms slowly so we can carefully debug
> each step
>
> > per-processor registers that one could use (but loading a
> > general register with that per processor register would be
> > needed for access.) Also, since the PPC has lots of registers,
> > one could? permanently reserve one of the general registers (r13?).
>
> I really don't like the id
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