Re: New != Faster

2007-06-05 Thread Chris

On 04/06/07, Kris Kennaway [EMAIL PROTECTED] wrote:

On Mon, Jun 04, 2007 at 08:54:50PM +0100, Chris wrote:
 On 04/06/07, Colin Percival [EMAIL PROTECTED] wrote:
 Tim Daneliuk wrote:
  Old   2 PIII @600Mhz   768K26M/sec4.11-stable/SMP
  50-60 min
  New   Pent D (2 core)@3.2GHz   2G 50M/sec6.2-stable/SMP
  40-50 min
  Fast  2 Xeon @3GHz 3G130M/sec4.11-stable/SMP
  8 min
 
  Is the difference in speed
  attributable to 4.11 being faster than 6.2?
 
 Close.  The difference in speed is due to the compiler in 4.11 being
 faster than the compiler in 6.2.  FreeBSD uses the gcc compiler, and
 between FreeBSD 4.11 and FreeBSD 6.2 that has been upgraded from 2.9
 to 3.4.  The general trend each time gcc is upgraded is that it takes
 2x longer to compile code, but produces code which is 5% faster (as a
 result of working harder to find optimizations).
 
 FreeBSD 6.2 is faster than FreeBSD 4.11 for almost everything except
 compiling itself. :-)
 
 Colin Percival
 
 ___
 freebsd-questions@freebsd.org mailing list
 http://lists.freebsd.org/mailman/listinfo/freebsd-questions
 To unsubscribe, send any mail to
 [EMAIL PROTECTED]
 

 What about all the following observations?

 slower disk performance especially under QUOTA.

s/especially//, unless you have further evidence I don't know about.

 both of these have been confirmed numerous times by different people
 so sweeping them under the carpet and saying they simply not true
 would be wrong.

My detailed measurements of disk performance and those of others I am
aware of contradicts your claim: 6.x equals or outperforms 4.x on disk
I/O (depends on driver) and filesystem I/O.  The only true part of it
is the under QUOTA part, which as you know from past discussions, is
still under Giant in 6.x.  As you also know, there is a patch to
address this which is awaiting user testing.  Have you tested it yet?

Kris


Having some hardware coming this week when thats all setup I will have
a box available for testing patches.

Chris
___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-05 Thread Kris Kennaway
On Tue, Jun 05, 2007 at 11:06:52PM +0100, Chris wrote:
 On 04/06/07, Kris Kennaway [EMAIL PROTECTED] wrote:
 On Mon, Jun 04, 2007 at 08:54:50PM +0100, Chris wrote:
  On 04/06/07, Colin Percival [EMAIL PROTECTED] wrote:
  Tim Daneliuk wrote:
   Old   2 PIII @600Mhz   768K26M/sec4.11-stable/SMP
   50-60 min
   New   Pent D (2 core)@3.2GHz   2G 50M/sec6.2-stable/SMP
   40-50 min
   Fast  2 Xeon @3GHz 3G130M/sec4.11-stable/SMP
   8 min
  
   Is the difference in speed
   attributable to 4.11 being faster than 6.2?
  
  Close.  The difference in speed is due to the compiler in 4.11 being
  faster than the compiler in 6.2.  FreeBSD uses the gcc compiler, and
  between FreeBSD 4.11 and FreeBSD 6.2 that has been upgraded from 2.9
  to 3.4.  The general trend each time gcc is upgraded is that it takes
  2x longer to compile code, but produces code which is 5% faster (as a
  result of working harder to find optimizations).
  
  FreeBSD 6.2 is faster than FreeBSD 4.11 for almost everything except
  compiling itself. :-)
  
  Colin Percival
  
  ___
  freebsd-questions@freebsd.org mailing list
  http://lists.freebsd.org/mailman/listinfo/freebsd-questions
  To unsubscribe, send any mail to
  [EMAIL PROTECTED]
  
 
  What about all the following observations?
 
  slower disk performance especially under QUOTA.
 
 s/especially//, unless you have further evidence I don't know about.
 
  both of these have been confirmed numerous times by different people
  so sweeping them under the carpet and saying they simply not true
  would be wrong.
 
 My detailed measurements of disk performance and those of others I am
 aware of contradicts your claim: 6.x equals or outperforms 4.x on disk
 I/O (depends on driver) and filesystem I/O.  The only true part of it
 is the under QUOTA part, which as you know from past discussions, is
 still under Giant in 6.x.  As you also know, there is a patch to
 address this which is awaiting user testing.  Have you tested it yet?
 
 Kris
 
 Having some hardware coming this week when thats all setup I will have
 a box available for testing patches.

Glad to hear it.  It is kind of irritating that you keep loudly
complaining about how terrible QUOTA performance is but have so far
avoided participating in the solution to that problem.

So, just to confirm, you do not in fact have evidence of poor disk
performance apart from this?

Kris
___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


New != Faster

2007-06-04 Thread Tim Daneliuk

In the course of trying to work through some problems with a new MOBO,
I did some speed test which I found sort of surprising:

Old System
--

Dual PIII 600Mhz w/768K Mem and Mylex RAID 5 with old 9G SCSI drived
FBSD 4.11-Stable
Writing a 1G file to /dev/null with dd reports about 26MB/sec

New System
--

Pentium D 3.2GHz w/2G Mem and SATA Drive reported running at SATA-150
FBSD 6.2-STABLE
Writing a 2G file to /dev/null with dd reports about 50MB/sec


So ... the new system should be much faster all the way around, right?
H, not necessarily so.  'buildworld' is only about 17% faster on the
new machine v. the old.  I would think that with way faster processors
and twice the disk bandwidth I would have seen far reduced buildworld
times.  So, I decided to check a known fast machine.  The results:

 Procs Mem dd ReadOSbuildworld


Old   2 PIII @600Mhz   768K26M/sec4.11-stable/SMP50-60 min
New   Pent D (2 core)@3.2GHz   2G 50M/sec6.2-stable/SMP 40-50 min
Fast  2 Xeon @3GHz 3G130M/sec4.11-stable/SMP8 min


So, now I'm confused.  These are all lightly loaded systems but the
buildworld time does not scale even approximately by either CPU or
I/O performance.  What the heck is going on, I wonder?  It is possible,
I suppose that the New machine does not have SMP running properly on it,
though 'top' shows two CPUs working away.  Is the difference in speed
attributable to 4.11 being faster than 6.2?  Unfortunately, I cannot
get 4.11 to boot on the New machine - it does not like the hardware
for some reason claiming:

RTC BIOS diagnostic error 80clock battery

Even after I change the RTC battery on the mobo.

Strange ... any input appreciated.


--

Tim Daneliuk [EMAIL PROTECTED]
PGP Key: http://www.tundraware.com/PGP/

___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-04 Thread Kris Kennaway
On Mon, Jun 04, 2007 at 12:54:18PM -0500, Tim Daneliuk wrote:
 In the course of trying to work through some problems with a new MOBO,
 I did some speed test which I found sort of surprising:
 
 Old System
 --
 
 Dual PIII 600Mhz w/768K Mem and Mylex RAID 5 with old 9G SCSI drived
 FBSD 4.11-Stable
 Writing a 1G file to /dev/null with dd reports about 26MB/sec
 
 New System
 --
 
 Pentium D 3.2GHz w/2G Mem and SATA Drive reported running at SATA-150
 FBSD 6.2-STABLE
 Writing a 2G file to /dev/null with dd reports about 50MB/sec
 
 
 So ... the new system should be much faster all the way around, right?
 H, not necessarily so.  'buildworld' is only about 17% faster on the
 new machine v. the old.  I would think that with way faster processors
 and twice the disk bandwidth I would have seen far reduced buildworld
 times.  So, I decided to check a known fast machine.  The results:
 
  Procs Mem dd ReadOS
  buildworld
 
 
 Old   2 PIII @600Mhz   768K26M/sec4.11-stable/SMP50-60 
 min
 New   Pent D (2 core)@3.2GHz   2G 50M/sec6.2-stable/SMP 40-50 
 min
 Fast  2 Xeon @3GHz 3G130M/sec4.11-stable/SMP8 
 min
 
 
 So, now I'm confused.  These are all lightly loaded systems but the
 buildworld time does not scale even approximately by either CPU or
 I/O performance.  What the heck is going on, I wonder?  It is possible,
 I suppose that the New machine does not have SMP running properly on it,
 though 'top' shows two CPUs working away.  Is the difference in speed
 attributable to 4.11 being faster than 6.2?  Unfortunately, I cannot
 get 4.11 to boot on the New machine - it does not like the hardware
 for some reason claiming:
 
 RTC BIOS diagnostic error 80clock battery
 
 Even after I change the RTC battery on the mobo.
 
 Strange ... any input appreciated.

This comparison is 100% bogus.

4.11 and 6.2 are vastly different (the latter builds all sorts of
different code, and uses a *different compiler* that is slower in
compiling the code).  When trying to compare something, you have to
compare the *same* thing, or it's meaningless.

Kris

___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-04 Thread Colin Percival
Tim Daneliuk wrote:
 Old   2 PIII @600Mhz   768K26M/sec4.11-stable/SMP   
 50-60 min
 New   Pent D (2 core)@3.2GHz   2G 50M/sec6.2-stable/SMP
 40-50 min
 Fast  2 Xeon @3GHz 3G130M/sec4.11-stable/SMP   
 8 min
 
 Is the difference in speed
 attributable to 4.11 being faster than 6.2?

Close.  The difference in speed is due to the compiler in 4.11 being
faster than the compiler in 6.2.  FreeBSD uses the gcc compiler, and
between FreeBSD 4.11 and FreeBSD 6.2 that has been upgraded from 2.9
to 3.4.  The general trend each time gcc is upgraded is that it takes
2x longer to compile code, but produces code which is 5% faster (as a
result of working harder to find optimizations).

FreeBSD 6.2 is faster than FreeBSD 4.11 for almost everything except
compiling itself. :-)

Colin Percival

___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-04 Thread Tim Daneliuk

Kris Kennaway wrote:
SNIP


This comparison is 100% bogus.

4.11 and 6.2 are vastly different (the latter builds all sorts of
different code, and uses a *different compiler* that is slower in
compiling the code).  When trying to compare something, you have to
compare the *same* thing, or it's meaningless.



I figured it had to be something like that.  For the record, I wasn't
complaining, merely curious...

--

Tim Daneliuk [EMAIL PROTECTED]
PGP Key: http://www.tundraware.com/PGP/

___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-04 Thread Tim Daneliuk

Colin Percival wrote:

Tim Daneliuk wrote:
Old   2 PIII @600Mhz   768K26M/sec4.11-stable/SMP   
50-60 min
New   Pent D (2 core)@3.2GHz   2G 50M/sec6.2-stable/SMP
40-50 min
Fast  2 Xeon @3GHz 3G130M/sec4.11-stable/SMP   
8 min


Is the difference in speed
attributable to 4.11 being faster than 6.2?


Close.  The difference in speed is due to the compiler in 4.11 being
faster than the compiler in 6.2.  FreeBSD uses the gcc compiler, and
between FreeBSD 4.11 and FreeBSD 6.2 that has been upgraded from 2.9
to 3.4.  The general trend each time gcc is upgraded is that it takes
2x longer to compile code, but produces code which is 5% faster (as a
result of working harder to find optimizations).

FreeBSD 6.2 is faster than FreeBSD 4.11 for almost everything except
compiling itself. :-)

Colin Percival



So ... if I ran compute bound tests like SPECmark or some kind
of I/O intensive tests, I should expect better runtime performance from
6.2 than 4.11...  I can live with that :)




--

Tim Daneliuk [EMAIL PROTECTED]
PGP Key: http://www.tundraware.com/PGP/

___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-04 Thread Chris

On 04/06/07, Colin Percival [EMAIL PROTECTED] wrote:

Tim Daneliuk wrote:
 Old   2 PIII @600Mhz   768K26M/sec4.11-stable/SMP
 50-60 min
 New   Pent D (2 core)@3.2GHz   2G 50M/sec6.2-stable/SMP
 40-50 min
 Fast  2 Xeon @3GHz 3G130M/sec4.11-stable/SMP
 8 min

 Is the difference in speed
 attributable to 4.11 being faster than 6.2?

Close.  The difference in speed is due to the compiler in 4.11 being
faster than the compiler in 6.2.  FreeBSD uses the gcc compiler, and
between FreeBSD 4.11 and FreeBSD 6.2 that has been upgraded from 2.9
to 3.4.  The general trend each time gcc is upgraded is that it takes
2x longer to compile code, but produces code which is 5% faster (as a
result of working harder to find optimizations).

FreeBSD 6.2 is faster than FreeBSD 4.11 for almost everything except
compiling itself. :-)

Colin Percival

___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]



What about all the following observations?

slower network performance in 6.x especially worse under DDOS conditions.
slower disk performance especially under QUOTA.

both of these have been confirmed numerous times by different people
so sweeping them under the carpet and saying they simply not true
would be wrong.  My observation of 6.x is that whilst it can exceed
4.11 performance this is only because of more more powerful hardware
and in particular on SMP systems where 4.11 isnt optimised but for UP
and most older hardware the worst performance of post 4.11 is
highlighted greatly.

In thoery shouldnt eg. a 6.2 system using a 3ghz core 2 duo be
multiple times faster then a pentium 3 500 running freebsd 4.11 due to
the more powerful hardware?

Chris
___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-04 Thread Tim Daneliuk

Chris wrote:

On 04/06/07, Colin Percival [EMAIL PROTECTED] wrote:

Tim Daneliuk wrote:
 Old   2 PIII @600Mhz   768K26M/sec4.11-stable/SMP
 50-60 min
 New   Pent D (2 core)@3.2GHz   2G 50M/sec6.2-stable/SMP
 40-50 min
 Fast  2 Xeon @3GHz 3G130M/sec4.11-stable/SMP
 8 min

 Is the difference in speed
 attributable to 4.11 being faster than 6.2?

Close.  The difference in speed is due to the compiler in 4.11 being
faster than the compiler in 6.2.  FreeBSD uses the gcc compiler, and
between FreeBSD 4.11 and FreeBSD 6.2 that has been upgraded from 2.9
to 3.4.  The general trend each time gcc is upgraded is that it takes
2x longer to compile code, but produces code which is 5% faster (as a
result of working harder to find optimizations).

FreeBSD 6.2 is faster than FreeBSD 4.11 for almost everything except
compiling itself. :-)

Colin Percival

___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to 
[EMAIL PROTECTED]




What about all the following observations?

slower network performance in 6.x especially worse under DDOS conditions.
slower disk performance especially under QUOTA.

both of these have been confirmed numerous times by different people
so sweeping them under the carpet and saying they simply not true
would be wrong.  My observation of 6.x is that whilst it can exceed
4.11 performance this is only because of more more powerful hardware
and in particular on SMP systems where 4.11 isnt optimised but for UP
and most older hardware the worst performance of post 4.11 is
highlighted greatly.

In thoery shouldnt eg. a 6.2 system using a 3ghz core 2 duo be
multiple times faster then a pentium 3 500 running freebsd 4.11 due to
the more powerful hardware?

Chris


It will be of academic interest to me to see how people respond to this.
Unfortunately - as documented in my original post - the 4.11 CD will
not even boot on this new motherboard for some reason.  Given that, and
that 4.x is no longer actively developed, I am forced to move to 6.x for
my next server ...



--

Tim Daneliuk [EMAIL PROTECTED]
PGP Key: http://www.tundraware.com/PGP/

___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-04 Thread Abdullah Ibn Hamad Al-Marri

On 6/4/07, Tim Daneliuk [EMAIL PROTECTED] wrote:

Chris wrote:
 On 04/06/07, Colin Percival [EMAIL PROTECTED] wrote:
 Tim Daneliuk wrote:
  Old   2 PIII @600Mhz   768K26M/sec4.11-stable/SMP
  50-60 min
  New   Pent D (2 core)@3.2GHz   2G 50M/sec6.2-stable/SMP
  40-50 min
  Fast  2 Xeon @3GHz 3G130M/sec4.11-stable/SMP
  8 min
 
  Is the difference in speed
  attributable to 4.11 being faster than 6.2?

 Close.  The difference in speed is due to the compiler in 4.11 being
 faster than the compiler in 6.2.  FreeBSD uses the gcc compiler, and
 between FreeBSD 4.11 and FreeBSD 6.2 that has been upgraded from 2.9
 to 3.4.  The general trend each time gcc is upgraded is that it takes
 2x longer to compile code, but produces code which is 5% faster (as a
 result of working harder to find optimizations).

 FreeBSD 6.2 is faster than FreeBSD 4.11 for almost everything except
 compiling itself. :-)

 Colin Percival

 ___
 freebsd-questions@freebsd.org mailing list
 http://lists.freebsd.org/mailman/listinfo/freebsd-questions
 To unsubscribe, send any mail to
 [EMAIL PROTECTED]


 What about all the following observations?

 slower network performance in 6.x especially worse under DDOS conditions.
 slower disk performance especially under QUOTA.

 both of these have been confirmed numerous times by different people
 so sweeping them under the carpet and saying they simply not true
 would be wrong.  My observation of 6.x is that whilst it can exceed
 4.11 performance this is only because of more more powerful hardware
 and in particular on SMP systems where 4.11 isnt optimised but for UP
 and most older hardware the worst performance of post 4.11 is
 highlighted greatly.

 In thoery shouldnt eg. a 6.2 system using a 3ghz core 2 duo be
 multiple times faster then a pentium 3 500 running freebsd 4.11 due to
 the more powerful hardware?

 Chris

It will be of academic interest to me to see how people respond to this.
Unfortunately - as documented in my original post - the 4.11 CD will
not even boot on this new motherboard for some reason.  Given that, and
that 4.x is no longer actively developed, I am forced to move to 6.x for
my next server ...



--

Tim Daneliuk [EMAIL PROTECTED]


You will not regret it, and wait FreeBSD 7.0 real powerful SMPing
which done on it.

I run heavily MySQL 5.0.41 app on itm and it's way faster than running
it in 6.2-STABLE with C2D 6600 and 2 GB of ram.


--
Regards,

-Abdullah Ibn Hamad Al-Marri
Arab Portal
http://www.WeArab.Net/
___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-04 Thread Kris Kennaway
On Mon, Jun 04, 2007 at 08:54:50PM +0100, Chris wrote:
 On 04/06/07, Colin Percival [EMAIL PROTECTED] wrote:
 Tim Daneliuk wrote:
  Old   2 PIII @600Mhz   768K26M/sec4.11-stable/SMP
  50-60 min
  New   Pent D (2 core)@3.2GHz   2G 50M/sec6.2-stable/SMP
  40-50 min
  Fast  2 Xeon @3GHz 3G130M/sec4.11-stable/SMP
  8 min
 
  Is the difference in speed
  attributable to 4.11 being faster than 6.2?
 
 Close.  The difference in speed is due to the compiler in 4.11 being
 faster than the compiler in 6.2.  FreeBSD uses the gcc compiler, and
 between FreeBSD 4.11 and FreeBSD 6.2 that has been upgraded from 2.9
 to 3.4.  The general trend each time gcc is upgraded is that it takes
 2x longer to compile code, but produces code which is 5% faster (as a
 result of working harder to find optimizations).
 
 FreeBSD 6.2 is faster than FreeBSD 4.11 for almost everything except
 compiling itself. :-)
 
 Colin Percival
 
 ___
 freebsd-questions@freebsd.org mailing list
 http://lists.freebsd.org/mailman/listinfo/freebsd-questions
 To unsubscribe, send any mail to 
 [EMAIL PROTECTED]
 
 
 What about all the following observations?

 slower disk performance especially under QUOTA.

s/especially//, unless you have further evidence I don't know about.

 both of these have been confirmed numerous times by different people
 so sweeping them under the carpet and saying they simply not true
 would be wrong.

My detailed measurements of disk performance and those of others I am
aware of contradicts your claim: 6.x equals or outperforms 4.x on disk
I/O (depends on driver) and filesystem I/O.  The only true part of it
is the under QUOTA part, which as you know from past discussions, is
still under Giant in 6.x.  As you also know, there is a patch to
address this which is awaiting user testing.  Have you tested it yet?

Kris
___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-04 Thread Tim Daneliuk

Kris Kennaway wrote:

On Mon, Jun 04, 2007 at 08:54:50PM +0100, Chris wrote:

On 04/06/07, Colin Percival [EMAIL PROTECTED] wrote:



both of these have been confirmed numerous times by different people
so sweeping them under the carpet and saying they simply not true
would be wrong.


My detailed measurements of disk performance and those of others I am
aware of contradicts your claim: 6.x equals or outperforms 4.x on disk
I/O (depends on driver) and filesystem I/O.  The only true part of it
is the under QUOTA part, which as you know from past discussions, is
still under Giant in 6.x.  As you also know, there is a patch to
address this which is awaiting user testing.  Have you tested it yet?

Kris


Kris -

It's been awhile since I tracked -current, so forgive me if this is
a stupid question but ... Is it the case that the 6.x drivers are
all now SMP-safe or do some still live under GIANT?

--

Tim Daneliuk [EMAIL PROTECTED]
PGP Key: http://www.tundraware.com/PGP/

___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-04 Thread Kris Kennaway
On Mon, Jun 04, 2007 at 06:07:31PM -0500, Tim Daneliuk wrote:
 Kris Kennaway wrote:
 On Mon, Jun 04, 2007 at 08:54:50PM +0100, Chris wrote:
 On 04/06/07, Colin Percival [EMAIL PROTECTED] wrote:
 
 both of these have been confirmed numerous times by different people
 so sweeping them under the carpet and saying they simply not true
 would be wrong.
 
 My detailed measurements of disk performance and those of others I am
 aware of contradicts your claim: 6.x equals or outperforms 4.x on disk
 I/O (depends on driver) and filesystem I/O.  The only true part of it
 is the under QUOTA part, which as you know from past discussions, is
 still under Giant in 6.x.  As you also know, there is a patch to
 address this which is awaiting user testing.  Have you tested it yet?
 
 Kris
 
 Kris -
 
 It's been awhile since I tracked -current, so forgive me if this is
 a stupid question but ... Is it the case that the 6.x drivers are
 all now SMP-safe or do some still live under GIANT?

There are still some storage drivers in 6.x that are giant-locked.
Note that in most cases this doesn't really matter, since typically
there is very little else on the system that uses Giant, so there is
little contention with other systems and performance is good.  One
situation where it would hurt on 6.x is if you have quotas enabled.

Kris
___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-04 Thread Garrett Cooper

Tim Daneliuk wrote:

Chris wrote:

On 04/06/07, Colin Percival [EMAIL PROTECTED] wrote:

Tim Daneliuk wrote:
 Old   2 PIII @600Mhz   768K26M/sec4.11-stable/SMP
 50-60 min
 New   Pent D (2 core)@3.2GHz   2G 50M/sec6.2-stable/SMP
 40-50 min
 Fast  2 Xeon @3GHz 3G130M/sec4.11-stable/SMP
 8 min

 Is the difference in speed
 attributable to 4.11 being faster than 6.2?

Close.  The difference in speed is due to the compiler in 4.11 being
faster than the compiler in 6.2.  FreeBSD uses the gcc compiler, and
between FreeBSD 4.11 and FreeBSD 6.2 that has been upgraded from 2.9
to 3.4.  The general trend each time gcc is upgraded is that it takes
2x longer to compile code, but produces code which is 5% faster (as a
result of working harder to find optimizations).

FreeBSD 6.2 is faster than FreeBSD 4.11 for almost everything except
compiling itself. :-)

Colin Percival

___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to 
[EMAIL PROTECTED]




What about all the following observations?

slower network performance in 6.x especially worse under DDOS 
conditions.

slower disk performance especially under QUOTA.

both of these have been confirmed numerous times by different people
so sweeping them under the carpet and saying they simply not true
would be wrong.  My observation of 6.x is that whilst it can exceed
4.11 performance this is only because of more more powerful hardware
and in particular on SMP systems where 4.11 isnt optimised but for UP
and most older hardware the worst performance of post 4.11 is
highlighted greatly.

In thoery shouldnt eg. a 6.2 system using a 3ghz core 2 duo be
multiple times faster then a pentium 3 500 running freebsd 4.11 due to
the more powerful hardware?

Chris


It will be of academic interest to me to see how people respond to this.
Unfortunately - as documented in my original post - the 4.11 CD will
not even boot on this new motherboard for some reason.  Given that, and
that 4.x is no longer actively developed, I am forced to move to 6.x for
my next server ...
Most likely because of the evolution of the FreeBSD kernel and increased 
hardware support over time. A lot of CDs won't boot on my C2D system, 
but that's because the HW is too new to run with older CDs, similar to 
issues seen with other OSes like Linux and Windoze.

-Garrett
___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-04 Thread Tim Daneliuk

Garrett Cooper wrote:

Tim Daneliuk wrote:



It will be of academic interest to me to see how people respond to this.
Unfortunately - as documented in my original post - the 4.11 CD will
not even boot on this new motherboard for some reason.  Given that, and
that 4.x is no longer actively developed, I am forced to move to 6.x for
my next server ...


Most likely because of the evolution of the FreeBSD kernel and increased 
hardware support over time. A lot of CDs won't boot on my C2D system, 
but that's because the HW is too new to run with older CDs, similar to 
issues seen with other OSes like Linux and Windoze.

-Garrett


This is, of course, the normal order of technology progress.  It just seems
odd to me that the 4.11 CD is blowing up claiming an RTC error
on a new mobo.  I'd understand if it failed because it could
not recognize the processor, or the Northbridge/Southbridge hardware,
but I'm guessing that not a lot has changed with RTC hardware.  Then
again, this error could be an artifact of some other silent problem.

In any case, I am working on recreating my (rather complex) standard
server configuration on 6.2 ... it was time anyway.  I will miss 4.x,
however.  It has been rock solid with nary a blip for many years
now (as was 2.x and 3.x before it).

Maybe I'm just getting old ;)

--

Tim Daneliuk [EMAIL PROTECTED]
PGP Key: http://www.tundraware.com/PGP/

___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]


Re: New != Faster

2007-06-04 Thread Chad Perrin
On Mon, Jun 04, 2007 at 10:37:02PM -0500, Tim Daneliuk wrote:
 
 Maybe I'm just getting old ;)

I think that goes without saying.  We're *all* getting old, at exactly
the same rate.

Some of us got a head start, though.

-- 
CCD CopyWrite Chad Perrin [ http://ccd.apotheon.org ]
Thomas McCauley: The measure of a man's real character is what he would do
if he knew he would never be found out.
___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]