[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: DAC960 and GCC

> > Actually, it did compile when I removed -O2.  I haven't tried it yet
> That's good news.  For awhile, it wouldn't compile no matter what I
> tried.  I put the whole matter on the shelf back then because nobody was
> complaining about it anyway :-)

Well, I am =)

> > What kind of performance hit will happen with -O2 removed?
> Shouldn't be much.  Not sure what kind of hit a kernel-space driver would
> take if it's not -O2'ed.  If you run any tests, please report the results
> as I suspect that I'm not the only curious party.

I rebuilt my alpha, I think I'll put the old back on.  I saved an exact
image of the disk (2gb isn't that hard to store =)  I see no advantage of
the way it's configure now to the way it was.

> > On my alpha, I have firmare 2.70 (I modded the module the other guy compiled
> > for me so it would work.  thankfully it was just a string I changed from
> > 2.73 to 2.00) and it works w/o any problems.  9.89mb/sec read from a raid0
> > of 3 2gb disks.
> > 
> > A friend of mine on a SMP pc is running the same card (nec branded firmware)
> > with firmware 2.39 and is getting speeds about 2mb slower than me but he's
> > using a raid 5 on 4 4gb disks
> Not bad...not phenominal, but not bad at all (I'm getting really used to
> fibre-channel stuff lately, so ignore me :-P).

You have to think too, this is an old fast wide scsi controller, not an
ultra wide, u2w, not u160/u320...  But hey, for free, do you complain?  =)

I gave 100$ for this alpha.  has a 266mhz cpu, 160mb ram, 4x dec (toshiba)
cdrom (replaced with a piece of junk 40x toshiba), a 4gb dec (archive python
I think) tape drive (replaced with an older 2gb drive as I used the 4gb
elsewhere), 2 1gb dec wide disks (quantum) which have both died and replaced
with a wde 2gb, 3 2gb dec wide disks (seagate), a 2.88mb floppy, 2 dac960pd
(1 channel) raid cards, dec tulip 10/100 nic, built in 7 bay storage works
cabnet, external 7 bay storage cabnet (redundant ps capable, but it broke on
me).  it's an as1000a 4/266.  hey, you can't beat the price!!!

> > what about gcc 3.0?  It doesn't work well on my alpha, but is it not
> > recommended?
> I haven't had many problems with 3.0 yet (I test it fairly frequently),
> but it does have problems that have since been fixed upstream for the
> future 3.1.  I've built kernels with it and never had problems with those,
> but given the amount of flux that is still going on from a C++ standpoint,
> I haven't been comfortable enough to say "let's go with it starting today
> by default".  Basically, it's fun to play with and compare to 2.95.4, but
> I'm not ready to rely on it yet.

I see.  with 3.0.3, I saw tons of ECC errors.  They aren't in the log so
I can't paste them for you.  (Now if someone says I have a hardware problem,
I'll shoot you! >=)

 Lab tests show that use of micro$oft causes cancer in lab animals

Reply to: