| Author |
Message |
Wolfram Goetz
Guest
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 Posted:
Fri Oct 08, 2004 12:14 pm Post subject:
Burst and transfer rate limited to 60MB/s for Cheetah 15k.3 |
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Hi all,
I have a small issue with a Seagate Cheetah 15k.3 (18GB) on an Adaptec
29160 on an Abit BP6 (Intel BX).
HDtach reports a maximum transfer rate of ~60 MB/s, and the burst rate
is limited to that value as well. For an IDE drive (Samsung SV1203N)
on the onboard HPT366 I get a burst rate of only 50MB/s. Checked the
results for the Cheetah with and without the additional IDE drive,
same thing.
The Cheetah is the only drive attached to the 29160. The cable is a
twisted-pair cable by Amphenol (at least is has the brand name on the
terminator and on all conecctors) with four connectors. The terminator
is part no. 497330001 and says explicitly "SCSI LVD/SE". The cable is
connected to the plug that's closer to the slot bracket, which should
be the LVD segment. The drive is the SCA version, connected with a
simple adaptor.
The Adaptec 29160 sits in PCI slot four on the BP6, which shares a
busmaster signal (only) with PCI5, which is empty. ACPI is enabled in
BIOS and OS.
I was already told that the drive might be running in U2W mode. The
Adaptec BIOS says "160", but I was told that doesn't have to be true.
So what can I do? Drivers are up to date now (Windows 2000 SP4). I
could try a newer BIOS for the 29160 or a different BIOS for the BP6,
but I don't like to flash if I don't have to. Could it be problem with
my slightly underclocked PCI bus (FSB 95 Mhz)? Or are there known
issues with this 64bit PCI-card in a 32bit-PCI-slot?
Any help would be really appreciated.
Wolfram |
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Wolfram Goetz
Guest
|
| Posted:
Fri Oct 08, 2004 12:38 pm Post subject:
Re: Burst and transfer rate limited to 60MB/s for Cheetah 15 |
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Have tried to run the my Dual Celerons at stock speed (366 Mhz) with
66 Mhz FSB and the PCI bus at standard 33 Mhz. This gives even worse
results: 55 MB/s burst rate and 50 MB/s maximum transfer rate. |
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Ron Reaugh
Guest
|
| Posted:
Sat Oct 09, 2004 11:22 pm Post subject:
Re: Burst and transfer rate limited to 60MB/s for Cheetah 15 |
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"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote in message
news:2sn0k2F1nalmsU1@uni-berlin.de...
| Quote: | Hi all,
I have a small issue with a Seagate Cheetah 15k.3 (18GB) on an Adaptec
29160 on an Abit BP6 (Intel BX).
HDtach reports a maximum transfer rate of ~60 MB/s, and the burst rate
is limited to that value as well. For an IDE drive (Samsung SV1203N)
on the onboard HPT366 I get a burst rate of only 50MB/s. Checked the
results for the Cheetah with and without the additional IDE drive,
same thing.
The Cheetah is the only drive attached to the 29160. The cable is a
twisted-pair cable by Amphenol (at least is has the brand name on the
terminator and on all conecctors) with four connectors. The terminator
is part no. 497330001 and says explicitly "SCSI LVD/SE". The cable is
connected to the plug that's closer to the slot bracket, which should
be the LVD segment. The drive is the SCA version, connected with a
simple adaptor.
The Adaptec 29160 sits in PCI slot four on the BP6, which shares a
busmaster signal (only) with PCI5, which is empty. ACPI is enabled in
BIOS and OS.
I was already told that the drive might be running in U2W mode. The
Adaptec BIOS says "160", but I was told that doesn't have to be true.
So what can I do? Drivers are up to date now (Windows 2000 SP4). I
could try a newer BIOS for the 29160 or a different BIOS for the BP6,
but I don't like to flash if I don't have to. Could it be problem with
my slightly underclocked PCI bus (FSB 95 Mhz)? Or are there known
issues with this 64bit PCI-card in a 32bit-PCI-slot?
Any help would be really appreciated.
|
No help is needed as everything is about right. |
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Wolfram Goetz
Guest
|
| Posted:
Mon Oct 11, 2004 4:57 pm Post subject:
Re: Burst and transfer rate limited to 60MB/s for Cheetah 15 |
|
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Ron Reaugh wrote:
| Quote: | "Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
I have a small issue with a Seagate Cheetah 15k.3 (18GB) on an
Adaptec 29160 on an Abit BP6 (Intel BX).
HDtach reports a maximum transfer rate of ~60 MB/s, and the burst
rate is limited to that value as well.
No help is needed as everything is about right.
|
I thought the maximum transfer rate for this drive should be >70MB/s
and the burst rate should be closer to the interface speed. |
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Folkert Rienstra
Guest
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| Posted:
Tue Oct 12, 2004 2:57 am Post subject:
Re: Burst and transfer rate limited to 60MB/s for Cheetah 15 |
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"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote in message news:2sve9cF1on99eU1@uni-berlin.de
| Quote: | Ron Reaugh wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
I have a small issue with a Seagate Cheetah 15k.3 (18GB) on an
Adaptec 29160 on an Abit BP6 (Intel BX).
HDtach reports a maximum transfer rate of ~60 MB/s, and the burst
rate is limited to that value as well.
No help is needed as everything is about right.
|
Like the reverse dependence on the PCI speed isn't precarious enough.
| Quote: |
I thought the maximum transfer rate for this drive should be >70MB/s
|
Yup, ~72MB/s on the outer zone, according to c't.
| Quote: | and the burst rate should be closer to the interface speed.
|
Probably. On older drives, the cache algorithm caused this
test to fail and produce even lower results than the STR.
Unless you can find testdata elsewhere where this drive has pro-
ven to do better this may be normal for HD Tach and this drive.
Though it must be said that more recent drives do not exibit
that behavior.
Your worsening results on standard PCI speed is worrysom.
Have you tried reseating the card? |
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Ron Reaugh
Guest
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| Posted:
Tue Oct 12, 2004 6:40 am Post subject:
Re: Burst and transfer rate limited to 60MB/s for Cheetah 15 |
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"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote in message
news:2sve9cF1on99eU1@uni-berlin.de...
| Quote: | Ron Reaugh wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
I have a small issue with a Seagate Cheetah 15k.3 (18GB) on an
Adaptec 29160 on an Abit BP6 (Intel BX).
HDtach reports a maximum transfer rate of ~60 MB/s, and the burst
rate is limited to that value as well.
No help is needed as everything is about right.
I thought the maximum transfer rate for this drive should be >70MB/s
and the burst rate should be closer to the interface speed.
|
Right but you are not far off and are likely seeing PCI bus limiting. Try
changing a value called "PCI latency" in mobo BIOS setup to a high value. |
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Wolfram Goetz
Guest
|
| Posted:
Tue Oct 12, 2004 12:54 pm Post subject:
Re: Burst and transfer rate limited to 60MB/s for Cheetah 15 |
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Folkert Rienstra wrote:
| Quote: | "Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
Ron Reaugh wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
I have a small issue with a Seagate Cheetah 15k.3 (18GB) on an
Adaptec 29160 on an Abit BP6 (Intel BX).
HDtach reports a maximum transfer rate of ~60 MB/s, and the burst
rate is limited to that value as well.
No help is needed as everything is about right.
Like the reverse dependence on the PCI speed isn't precarious
enough.
I thought the maximum transfer rate for this drive should be
70MB/s
Yup, ~72MB/s on the outer zone, according to c't.
and the burst rate should be closer to the interface speed.
Probably. On older drives, the cache algorithm caused this
test to fail and produce even lower results than the STR.
Unless you can find testdata elsewhere where this drive has pro-
ven to do better this may be normal for HD Tach and this drive.
Though it must be said that more recent drives do not exibit
that behavior.
|
http://www.digit-life.com/articles2/seagate-15k3/
HDTach 2.61: 64,9 MB/s average
my PC: ~ 52 MB/s average
same here:
http://techreport.com/reviews/2003q4/cheetah-15k/index.x?pg=4
| Quote: | Your worsening results on standard PCI speed is worrysom.
Have you tried reseating the card?
|
I had the card in PCI5 before, with an Adaptec 2940AU in PCI4 (used
for older external peripherals before). With that configuration, no
conflicts showed up in Windows, but the harddisk was not recognized by
the 29160, so there _was_ some problem. Probably because PCI4 and 5
share IRQ and busmaster signal on the BP6. All other PCI slots are
occupied, and I wouldn't like to do much swapping, because other (more
serious) problems might arise. Maybe I'll try that, but will look for
alternative solutions first or just leave it as it is. |
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Wolfram Goetz
Guest
|
| Posted:
Tue Oct 12, 2004 12:57 pm Post subject:
Re: Burst and transfer rate limited to 60MB/s for Cheetah 15 |
|
|
Ron Reaugh wrote:
| Quote: | "Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
Ron Reaugh wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
I have a small issue with a Seagate Cheetah 15k.3 (18GB) on an
Adaptec 29160 on an Abit BP6 (Intel BX).
HDtach reports a maximum transfer rate of ~60 MB/s, and the burst
rate is limited to that value as well.
No help is needed as everything is about right.
I thought the maximum transfer rate for this drive should be
70MB/s and the burst rate should be closer to the interface speed.
Right but you are not far off and are likely seeing PCI bus
limiting. Try changing a value called "PCI latency" in mobo BIOS
setup to a high value.
|
Thanks, but unfortunately not available in my BIOS. Only PCI options
are "passive release" and "delayed transaction". Disabling or enabling
them doesn't make any difference. |
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Wolfram Goetz
Guest
|
| Posted:
Tue Oct 12, 2004 1:39 pm Post subject:
Re: Burst and transfer rate limited to 60MB/s for Cheetah 15 |
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Wolfram Goetz wrote:
| Quote: | Folkert Rienstra wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
Ron Reaugh wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
I have a small issue with a Seagate Cheetah 15k.3 (18GB) on an
Adaptec 29160 on an Abit BP6 (Intel BX).
HDtach reports a maximum transfer rate of ~60 MB/s, and the
burst rate is limited to that value as well.
No help is needed as everything is about right.
Like the reverse dependence on the PCI speed isn't precarious
enough.
I thought the maximum transfer rate for this drive should be
70MB/s
Yup, ~72MB/s on the outer zone, according to c't.
and the burst rate should be closer to the interface speed.
Probably. On older drives, the cache algorithm caused this
test to fail and produce even lower results than the STR.
Unless you can find testdata elsewhere where this drive has pro-
ven to do better this may be normal for HD Tach and this drive.
Though it must be said that more recent drives do not exibit
that behavior.
http://www.digit-life.com/articles2/seagate-15k3/
HDTach 2.61: 64,9 MB/s average
my PC: ~ 52 MB/s average
same here:
http://techreport.com/reviews/2003q4/cheetah-15k/index.x?pg=4
|
Damn. Seems to be HDTach 2.61.
HDTach 3.0 reports a max. STR of just above 70MB/s (but still with a
low burst speed, 75MB/s).
An older version of Diskspeed32 say max. 65MB/s STR and h2benchw from
c't magazine says sequential reas 67MB/s, repeated sequential read
63,5 MB/s. |
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Ron Reaugh
Guest
|
| Posted:
Wed Oct 13, 2004 1:49 am Post subject:
Re: Burst and transfer rate limited to 60MB/s for Cheetah 15 |
|
|
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote in message
news:2t1n25F1r4avlU1@uni-berlin.de...
| Quote: | Wolfram Goetz wrote:
Folkert Rienstra wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
Ron Reaugh wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
I have a small issue with a Seagate Cheetah 15k.3 (18GB) on an
Adaptec 29160 on an Abit BP6 (Intel BX).
HDtach reports a maximum transfer rate of ~60 MB/s, and the
burst rate is limited to that value as well.
No help is needed as everything is about right.
Like the reverse dependence on the PCI speed isn't precarious
enough.
I thought the maximum transfer rate for this drive should be
70MB/s
Yup, ~72MB/s on the outer zone, according to c't.
and the burst rate should be closer to the interface speed.
Probably. On older drives, the cache algorithm caused this
test to fail and produce even lower results than the STR.
Unless you can find testdata elsewhere where this drive has pro-
ven to do better this may be normal for HD Tach and this drive.
Though it must be said that more recent drives do not exibit
that behavior.
http://www.digit-life.com/articles2/seagate-15k3/
HDTach 2.61: 64,9 MB/s average
my PC: ~ 52 MB/s average
same here:
http://techreport.com/reviews/2003q4/cheetah-15k/index.x?pg=4
Damn. Seems to be HDTach 2.61.
HDTach 3.0 reports a max. STR of just above 70MB/s (but still with a
low burst speed, 75MB/s).
An older version of Diskspeed32 say max. 65MB/s STR and h2benchw from
c't magazine says sequential reas 67MB/s, repeated sequential read
63,5 MB/s.
|
Try it all on a late model mobo using an 865 or 875 or later chipset.
|
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Wolfram Goetz
Guest
|
| Posted:
Wed Oct 13, 2004 3:38 pm Post subject:
Re: Burst and transfer rate limited to 60MB/s for Cheetah 15 |
|
|
Folkert Rienstra wrote:
| Quote: | "Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
Wolfram Goetz wrote:
Folkert Rienstra wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
Ron Reaugh wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
I have a small issue with a Seagate Cheetah 15k.3 (18GB) on an
Adaptec 29160 on an Abit BP6 (Intel BX).
HDtach reports a maximum transfer rate of ~60 MB/s, and the
burst rate is limited to that value as well.
No help is needed as everything is about right.
Like the reverse dependence on the PCI speed isn't precarious
enough.
I thought the maximum transfer rate for this drive should be
70MB/s
Yup, ~72MB/s on the outer zone, according to c't.
and the burst rate should be closer to the interface speed.
Probably. On older drives, the cache algorithm caused this
test to fail and produce even lower results than the STR.
Unless you can find testdata elsewhere where this drive has pro-
ven to do better this may be normal for HD Tach and this drive.
Though it must be said that more recent drives do not exhibit
that behavior.
http://www.digit-life.com/articles2/seagate-15k3/
HDTach 2.61: 64,9 MB/s average
Looks on the high side to me.
my PC: ~ 52 MB/s average
With 48 low and 72 high I'd be expecting ~60MB/s average.
|
Actually it's ~64MB/s. Still unsure if there's a PCI issue, but the
system works fine so far.
| Quote: |
same here:
http://techreport.com/reviews/2003q4/cheetah-15k/index.x?pg=4
Damn. Seems to be HDTach 2.61.
HDTach 3.0 reports a max. STR of just above 70MB/s (but still with
a low burst speed, 75MB/s).
An older version of Diskspeed32 say max. 65MB/s STR
Diskspeed get's it totally wrong on my system. About 50% wrong.
Looks like it works as expected on yours. I don't trust it much.
and h2benchw from c't magazine says sequential reads 67MB/s,
repeated sequential read 63,5 MB/s.
Sounds like that cache anomalie that I was describing, kicking in.
|
Yes. Wonder if there are any reliable benchmarks around. And how much
attention one should pay to most harddisk reviews on the web... |
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Wolfram Goetz
Guest
|
| Posted:
Wed Oct 13, 2004 3:39 pm Post subject:
Re: Burst and transfer rate limited to 60MB/s for Cheetah 15 |
|
|
Ron Reaugh wrote:
| Quote: | "Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote in message
news:2t1n25F1r4avlU1@uni-berlin.de...
Wolfram Goetz wrote:
Folkert Rienstra wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
Ron Reaugh wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
I have a small issue with a Seagate Cheetah 15k.3 (18GB) on an
Adaptec 29160 on an Abit BP6 (Intel BX).
HDtach reports a maximum transfer rate of ~60 MB/s, and the
burst rate is limited to that value as well.
No help is needed as everything is about right.
Like the reverse dependence on the PCI speed isn't precarious
enough.
I thought the maximum transfer rate for this drive should be
70MB/s
Yup, ~72MB/s on the outer zone, according to c't.
and the burst rate should be closer to the interface speed.
Probably. On older drives, the cache algorithm caused this
test to fail and produce even lower results than the STR.
Unless you can find testdata elsewhere where this drive has pro-
ven to do better this may be normal for HD Tach and this drive.
Though it must be said that more recent drives do not exibit
that behavior.
http://www.digit-life.com/articles2/seagate-15k3/
HDTach 2.61: 64,9 MB/s average
my PC: ~ 52 MB/s average
same here:
http://techreport.com/reviews/2003q4/cheetah-15k/index.x?pg=4
Damn. Seems to be HDTach 2.61.
HDTach 3.0 reports a max. STR of just above 70MB/s (but still with
a low burst speed, 75MB/s).
An older version of Diskspeed32 say max. 65MB/s STR and h2benchw
from c't magazine says sequential reas 67MB/s, repeated sequential
read 63,5 MB/s.
Try it all on a late model mobo using an 865 or 875 or later
chipset.
|
If I had one, I'd check that out ;)
Thanks to Folkert and you for your answers. |
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Folkert Rienstra
Guest
|
| Posted:
Thu Oct 14, 2004 1:21 am Post subject:
Re: Burst and transfer rate limited to 60MB/s for Cheetah 15 |
|
|
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote in message news:2t1n25F1r4avlU1@uni-berlin.de
| Quote: | Wolfram Goetz wrote:
Folkert Rienstra wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
Ron Reaugh wrote:
"Wolfram Goetz" <Wolfram.Goetz@gmx.de> wrote
I have a small issue with a Seagate Cheetah 15k.3 (18GB) on an
Adaptec 29160 on an Abit BP6 (Intel BX).
HDtach reports a maximum transfer rate of ~60 MB/s, and the
burst rate is limited to that value as well.
No help is needed as everything is about right.
Like the reverse dependence on the PCI speed isn't precarious
enough.
I thought the maximum transfer rate for this drive should be
70MB/s
Yup, ~72MB/s on the outer zone, according to c't.
and the burst rate should be closer to the interface speed.
Probably. On older drives, the cache algorithm caused this
test to fail and produce even lower results than the STR.
Unless you can find testdata elsewhere where this drive has pro-
ven to do better this may be normal for HD Tach and this drive.
Though it must be said that more recent drives do not exhibit
that behavior.
http://www.digit-life.com/articles2/seagate-15k3/
HDTach 2.61: 64,9 MB/s average
|
Looks on the high side to me.
| Quote: | my PC: ~ 52 MB/s average
|
With 48 low and 72 high I'd be expecting ~60MB/s average.
Diskspeed get's it totally wrong on my system. About 50% wrong.
Looks like it works as expected on yours. I don't trust it much.
| Quote: | and h2benchw from c't magazine says sequential reads 67MB/s,
repeated sequential read 63,5 MB/s.
|
Sounds like that cache anomalie that I was describing, kicking in. |
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