00:00.0 Host bridge: Intel Corp. 82830 830 Chipset Host Bridge (rev 04)
Subsystem: Intel Corp.: Unknown device 1969
Flags: bus master, fast devsel, latency 0
Memory at <unassigned> (32-bit, prefetchable)
Capabilities: [40] #09 [2105]
00:02.0 VGA compatible controller: Intel Corp. 82830 CGC [Chipset Graphics Controller] (rev 04) (prog-if 00 [VGA])
Subsystem: Hewlett-Packard Company: Unknown device 0021
Flags: bus master, fast devsel, latency 0, IRQ 9
Memory at e8000000 (32-bit, prefetchable) [size=128M]
Memory at e0000000 (32-bit, non-prefetchable) [size=512K]
Capabilities: [d0] Power Management version 1
00:02.1 Display controller: Intel Corp. 82830 CGC [Chipset Graphics Controller]
Subsystem: Hewlett-Packard Company: Unknown device 0021
Flags: bus master, fast devsel, latency 0
Memory at f0000000 (32-bit, prefetchable) [size=128M]
Memory at e0080000 (32-bit, non-prefetchable) [size=512K]
Capabilities: [d0] Power Management version 1
00:1d.0 USB Controller: Intel Corp. 82801CA/CAM USB (Hub #1) (rev 02) (prog-if 00 [UHCI])
Subsystem: Hewlett-Packard Company: Unknown device 0021
Flags: bus master, medium devsel, latency 0, IRQ 9
I/O ports at 1800 [size=32]
00:1d.1 USB Controller: Intel Corp. 82801CA/CAM USB (Hub #2) (rev 02) (prog-if 00 [UHCI])
Subsystem: Hewlett-Packard Company: Unknown device 0021
Flags: bus master, medium devsel, latency 0, IRQ 5
I/O ports at 1820 [size=32]
00:1d.2 USB Controller: Intel Corp. 82801CA/CAM USB (Hub #3) (rev 02) (prog-if 00 [UHCI])
Subsystem: Hewlett-Packard Company: Unknown device 0021
Flags: bus master, medium devsel, latency 0, IRQ 5
I/O ports at 1840 [size=32]
00:1e.0 PCI bridge: Intel Corp. 82801BAM/CAM PCI Bridge (rev 42) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=64
I/O behind bridge: 00002000-00002fff
Memory behind bridge: e0200000-e02fffff
00:1f.0 ISA bridge: Intel Corp. 82801CAM ISA Bridge (LPC) (rev 02)
Flags: bus master, medium devsel, latency 0
00:1f.1 IDE interface: Intel Corp. 82801CAM IDE U100 (rev 02) (prog-if 8a [Master SecP PriP])
Subsystem: Hewlett-Packard Company: Unknown device 0021
Flags: bus master, medium devsel, latency 0, IRQ 5
I/O ports at <ignored>
I/O ports at <ignored>
I/O ports at <ignored>
I/O ports at <ignored>
I/O ports at 1860 [size=16]
Memory at e0100000 (32-bit, non-prefetchable) [size=1K]
00:1f.3 SMBus: Intel Corp. 82801CA/CAM SMBus (rev 02)
Subsystem: Hewlett-Packard Company: Unknown device 0021
Flags: medium devsel, IRQ 9
I/O ports at 1880 [size=32]
02:02.0 Communication controller: ESS Technology ES2838/2839 SuperLink Modem (rev 01)
Subsystem: Hewlett-Packard Company: Unknown device 0020
Flags: fast devsel, IRQ 5
I/O ports at 2440 [size=16]
Capabilities: [c0] Power Management version 2
02:03.0 Multimedia audio controller: ESS Technology ES1988 Allegro-1 (rev 12)
Subsystem: Hewlett-Packard Company: Unknown device 0021
Flags: bus master, medium devsel, latency 64, IRQ 5
I/O ports at 2000 [size=256]
Capabilities: [c0] Power Management version 2
02:04.0 CardBus bridge: O2 Micro, Inc. OZ6933 Cardbus Controller (rev 01)
Subsystem: Hewlett-Packard Company: Unknown device 0021
Flags: stepping, slow devsel, IRQ 9
Memory at 10000000 (32-bit, non-prefetchable) [disabled] [size=4K]
Bus: primary=02, secondary=03, subordinate=06, sec-latency=176
I/O window 0: 00000000-00000003
I/O window 1: 00000000-00000003
16-bit legacy interface ports at 0001
02:04.1 CardBus bridge: O2 Micro, Inc. OZ6933 Cardbus Controller (rev 01)
Subsystem: Hewlett-Packard Company: Unknown device 0021
Flags: stepping, slow devsel, IRQ 9
Memory at 10001000 (32-bit, non-prefetchable) [disabled] [size=4K]
Bus: primary=02, secondary=07, subordinate=0a, sec-latency=176
I/O window 0: 00000000-00000003
I/O window 1: 00000000-00000003
16-bit legacy interface ports at 0001
02:08.0 Ethernet controller: Intel Corp. 82801CAM (ICH3) PRO/100 VE (LOM) Ethernet Controller (rev 42)
Subsystem: Hewlett-Packard Company: Unknown device 0021
Flags: bus master, medium devsel, latency 66, IRQ 10
Memory at e0200000 (32-bit, non-prefetchable) [size=4K]
I/O ports at 2400 [size=64]
Capabilities: [dc] Power Management version 2
On 2003-07-29 12:00:06 Stefano Rivoir wrote:
> Is there something I'm missing?!
No, you are not ;-) You can reclaim some speed by doing a "hdparm -a
512". See thread for explanation (it's the borked value for readahead):
http://marc.theaimsgroup.com/?l=linux-kernel&m=105830624016066&w=2
Mvh
Mats Johannnesson
Voluspa wrote:
>On 2003-07-29 12:00:06 Stefano Rivoir wrote:
>
>
>
>>Is there something I'm missing?!
>>
>>
>
>No, you are not ;-) You can reclaim some speed by doing a "hdparm -a
>512". See thread for explanation (it's the borked value for readahead):
>
>http://marc.theaimsgroup.com/?l=linux-kernel&m=105830624016066&w=2
>
Anyone want to field why we aren't we just setting the default to 512 so
users don't need to adjust this? I'm sure there's a good reason... I'd
just like to know what it is ;-)
Lou Langholtz wrote:
> Voluspa wrote:
>
>> On 2003-07-29 12:00:06 Stefano Rivoir wrote:
>>
>>
>>
>>> Is there something I'm missing?!
>>>
>>
>>
>> No, you are not ;-) You can reclaim some speed by doing a "hdparm -a
>> 512". See thread for explanation (it's the borked value for readahead):
>>
>> http://marc.theaimsgroup.com/?l=linux-kernel&m=105830624016066&w=2
>>
> Anyone want to field why we aren't we just setting the default to 512 so
> users don't need to adjust this? I'm sure there's a good reason... I'd
> just like to know what it is ;-)
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
Good Idea, what could be the reason?
--
Voicu Liviu
Rothberg International School
Computation center, Mount Scopus
Hebrew University of Jerusalem
Tel: 972(2)-5881253
E-mail: [email protected]
Operating System: Linux Gentoo1.4 ( http://www.gentoo.org )
Click here to see my GPG signature:
http://search.keyserver.net:11371/pks/lookup?template=netensearch%2Cnetennomatch%2Cnetenerror&search=pacman%40mscc.huji.ac.il&op=vindex&fingerprint=on&submit=Get+List
Voluspa wrote:
> On 2003-07-29 12:00:06 Stefano Rivoir wrote:
>
>
>>Is there something I'm missing?!
>
>
> No, you are not ;-) You can reclaim some speed by doing a "hdparm -a
> 512". See thread for explanation (it's the borked value for readahead):
Thanks for the hint. This seems to make things a little better, but I'm
still far away from 2.4 performances. I thought that anticipatory sched
could be part of the problem, and booting with elevator=deadline
does a little better... but using 2.4 is completely another thing.
By the way, -a 512 vs -a 8 is a kernel "change" or an hdpam one?
Bye
--
Stefano RIVOIR
GTS Srl
Stefano Rivoir <[email protected]> wrote:
>
> Voluspa wrote:
>
> > On 2003-07-29 12:00:06 Stefano Rivoir wrote:
> >
> >
> >>Is there something I'm missing?!
> >
> >
> > No, you are not ;-) You can reclaim some speed by doing a "hdparm -a
> > 512". See thread for explanation (it's the borked value for readahead):
>
> Thanks for the hint. This seems to make things a little better, but I'm
> still far away from 2.4 performances. I thought that anticipatory sched
> could be part of the problem, and booting with elevator=deadline
> does a little better... but using 2.4 is completely another thing.
> By the way, -a 512 vs -a 8 is a kernel "change" or an hdpam one?
What makes you think it is a disk performance problem at all? All we know
is that KDE applications take longer to start up, yes?
How much memory is in that machine? Can you run a `vmstat 1' trace during
the "slow" operations?
Comparative vmstat -d 1 could help as well
-----Message d'origine-----
De : Andrew Morton [mailto:[email protected]]
Envoy? : mercredi 30 juillet 2003 12:55
? : Stefano Rivoir
Cc : [email protected]; [email protected]
Objet : Re: Disk performance degradation
Stefano Rivoir <[email protected]> wrote:
>
> Voluspa wrote:
>
> > On 2003-07-29 12:00:06 Stefano Rivoir wrote:
> >
> >
> >>Is there something I'm missing?!
> >
> >
> > No, you are not ;-) You can reclaim some speed by doing a "hdparm -a
> > 512". See thread for explanation (it's the borked value for readahead):
>
> Thanks for the hint. This seems to make things a little better, but I'm
> still far away from 2.4 performances. I thought that anticipatory sched
> could be part of the problem, and booting with elevator=deadline
> does a little better... but using 2.4 is completely another thing.
> By the way, -a 512 vs -a 8 is a kernel "change" or an hdpam one?
What makes you think it is a disk performance problem at all? All we know
is that KDE applications take longer to start up, yes?
How much memory is in that machine? Can you run a `vmstat 1' trace during
the "slow" operations?
Andrew Morton wrote:
> Stefano Rivoir <[email protected]> wrote:
>>Thanks for the hint. This seems to make things a little better, but I'm
>>still far away from 2.4 performances. I thought that anticipatory sched
>>could be part of the problem, and booting with elevator=deadline
>>does a little better... but using 2.4 is completely another thing.
>>By the way, -a 512 vs -a 8 is a kernel "change" or an hdpam one?
>
>
> What makes you think it is a disk performance problem at all? All we know
> is that KDE applications take longer to start up, yes?
> How much memory is in that machine? Can you run a `vmstat 1' trace during
> the "slow" operations?
I think I've got it. 2.4 fails to load DRI, so when X is up there is
memory available until the load of gnucash, the last operation. 2.6
loads dri and probably this eats too much too early, causing the
system to touch swap since the first operation after X startup. This
does not happen anymore disabling DRI in X.
Sorry for wasting your time :(
Thanks.
--
Stefano RIVOIR
GTS Srl
Stefano Rivoir <[email protected]> wrote:
>
> I think I've got it. 2.4 fails to load DRI, so when X is up there is
> memory available until the load of gnucash, the last operation. 2.6
> loads dri and probably this eats too much too early, causing the
> system to touch swap since the first operation after X startup.
hrm, Why should loading DRI in X consume a significant amount of memory?
How much more memory is X using when DRI is loaded?
On Tue, 29 Jul 2003, Lou Langholtz wrote:
> Anyone want to field why we aren't we just setting the default to 512 so
> users don't need to adjust this? I'm sure there's a good reason... I'd
> just like to know what it is ;-)
mike:~# hdparm -a 512 /dev/hda
/dev/hda:
setting fs readahead to 512
BLKRASET failed: Invalid argument
readahead = 8 (on)
mike:~# hdparm -a 255 /dev/hda
/dev/hda:
setting fs readahead to 255
readahead = 255 (on)
mike:~# hdparm -a 256 /dev/hda
/dev/hda:
setting fs readahead to 256
BLKRASET failed: Invalid argument
readahead = 255 (on)
Probably for reasons like that. For some reason, I can't set my ICH4
based controller(ASUS P4B533) and Quantum Fireball AS40.0 to more than
255. Kernel is 2.4.21
Or I'm missing more of this thread than I thought and I'm completely off
topic here!
(i'm guessing the latter)
Mike
Andrew Morton wrote:
> Stefano Rivoir <[email protected]> wrote:
>
>>I think I've got it. 2.4 fails to load DRI, so when X is up there is
>> memory available until the load of gnucash, the last operation. 2.6
>> loads dri and probably this eats too much too early, causing the
>> system to touch swap since the first operation after X startup.
>
>
> hrm, Why should loading DRI in X consume a significant amount of memory?
Perhaps this is a machine with "shared video memory", like the Intel
integrated video chipsets (i810). Stefano?
-Rahul
--
Rahul Karnik
[email protected]
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procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
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procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
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procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
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r b swpd free buff cache si so bi bo in cs us sy id wa
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Stefano Rivoir <[email protected]> wrote:
>
> > How much more memory is X using when DRI is loaded?
>
> Here attached you'll find the vmstats, 2.4.21, 2.6.0 with DRI and 2.6.0
> w/o DRI. 2.4.21 and 2.6.0-nodri are more or less the same...
wow, it seems to have taken 24 megabytes.
You may get nicer performance out of that little machine by decreasing
/proc/sys/vm/swappiness. I have the feeling that the current default of
60% is about right for 256M machines, but too small for larger machines,
too large for smaller machines. I use 85% on a 1G desktop machine.
Mike Dresser <[email protected]> writes:
> Probably for reasons like that. For some reason, I can't set my ICH4
> based controller(ASUS P4B533) and Quantum Fireball AS40.0 to more than
> 255. Kernel is 2.4.21
It appears that in 2.[56] kernels the unit for readahead is bytes,
rather than sectors, as used in 2.4 kernels.
--
M?ns Rullg?rd
[email protected]
On Thu, 31 Jul 2003, [iso-8859-1] M?ns Rullg?rd wrote:
> It appears that in 2.[56] kernels the unit for readahead is bytes,
> rather than sectors, as used in 2.4 kernels.
See, I knew I was offtopic!
Thanks though =)
Mike
[email protected] (M?ns Rullg?rd) wrote:
>
> Mike Dresser <[email protected]> writes:
>
> > Probably for reasons like that. For some reason, I can't set my ICH4
> > based controller(ASUS P4B533) and Quantum Fireball AS40.0 to more than
> > 255. Kernel is 2.4.21
>
> It appears that in 2.[56] kernels the unit for readahead is bytes,
> rather than sectors, as used in 2.4 kernels.
The ioctl which is used by
blockdev --setra
is still in 512-byte units.
There are other backdoors such as IDE-private /proc files which can be used
to set readahead. I'm not sure what units they use, and I don't know what
mechanism hdparm is using to diddle readahead.
Whatever it is, I suggest you ignore it and use /sbin/blockdev; it works
for all disk types.
On Thu, 31 Jul 2003, Andrew Morton wrote:
> [email protected] (M?ns Rullg?rd) wrote:
> >
> > Mike Dresser <[email protected]> writes:
> >
> > > Probably for reasons like that. For some reason, I can't set my ICH4
> > > based controller(ASUS P4B533) and Quantum Fireball AS40.0 to more than
> > > 255. Kernel is 2.4.21
> >
> > It appears that in 2.[56] kernels the unit for readahead is bytes,
> > rather than sectors, as used in 2.4 kernels.
>
> The ioctl which is used by
>
> blockdev --setra
>
> is still in 512-byte units.
>
> There are other backdoors such as IDE-private /proc files which can be used
> to set readahead. I'm not sure what units they use, and I don't know what
> mechanism hdparm is using to diddle readahead.
in 2.4.x:
/proc/ide/hdX/settings
breada_readahead - BLKRA{GET/SET}
file_readahead - BLKFRA{GET/SET}
both are in 1024 bytes units
in 2.6.x they are gone :-).
and hdparm is using BLKRA{GET/SET}
--
Bartlomiej