Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Jan Kiszka
Anders Blomdell wrote: > Jan Kiszka wrote: >> Anders Blomdell wrote: >> >>> Jan Kiszka wrote: >>> ...and may also add further latencies with the system has to speed up again. Anyway, there might be use-cases where power consumption is - besides latency - also an important issue. I'm

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Anders Blomdell
Jan Kiszka wrote: Anders Blomdell wrote: Jan Kiszka wrote: ...and may also add further latencies with the system has to speed up again. Anyway, there might be use-cases where power consumption is - besides latency - also an important issue. I'm just thinking of our smaller mobile robots where

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Jan Kiszka
Anders Blomdell wrote: > Jan Kiszka wrote: >> ...and may also add further latencies with the system has to speed up >> again. Anyway, there might be use-cases where power consumption is - >> besides latency - also an important issue. I'm just thinking of our >> smaller mobile robots where the power

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Jan Kiszka
Anders Blomdell wrote: > Jan Kiszka wrote: >> Jan Kiszka wrote: >> >>> ... >>> What about other time sources on x86? Which systems already have HPET >>> these days, and does this source not suffer from frequency scaling? I >>> once read that HPET is quite easy to program, is this true? IOW, would >

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Anders Blomdell
Jan Kiszka wrote: Jan Kiszka wrote: ... What about other time sources on x86? Which systems already have HPET these days, and does this source not suffer from frequency scaling? I once read that HPET is quite easy to program, is this true? IOW, would it be worth considering to add this to the H

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Anders Blomdell
Jan Kiszka wrote: ...and may also add further latencies with the system has to speed up again. Anyway, there might be use-cases where power consumption is - besides latency - also an important issue. I'm just thinking of our smaller mobile robots where the power demand of the drives and the contr

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Philippe Gerum
Jan Kiszka wrote: Jan Kiszka wrote: ... What about other time sources on x86? Which systems already have HPET these days, and does this source not suffer from frequency scaling? I once read that HPET is quite easy to program, is this true? IOW, would it be worth considering to add this to the H

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Jan Kiszka
Jan Kiszka wrote: > ... > What about other time sources on x86? Which systems already have HPET > these days, and does this source not suffer from frequency scaling? I > once read that HPET is quite easy to program, is this true? IOW, would > it be worth considering to add this to the HAL? There a

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Jan Kiszka
Philippe Gerum wrote: > Jim Cromie wrote: >> Philippe Gerum wrote: >> >>> Ive been running an ipipe kernel as the default since shortly after 1/7. Since then, Ive had a couple of freezes on boot, and sometimes bash's auto-complete takes longer to complete, >>> >>> >>> Eh? M

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Philippe Gerum
Jim Cromie wrote: Philippe Gerum wrote: Ive been running an ipipe kernel as the default since shortly after 1/7. Since then, Ive had a couple of freezes on boot, and sometimes bash's auto-complete takes longer to complete, Eh? Maybe the CONFIG_PCI_MSI syndrom again? Um, does this tell

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Jan Kiszka
Anders Blomdell wrote: > Jan Kiszka wrote: >> Anders Blomdell wrote: >> >>> Jan Kiszka wrote: >>> ...and may also add further latencies with the system has to speed up again. Anyway, there might be use-cases where power consumption is - besides latency - also an important issue. I'm

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Anders Blomdell
Jan Kiszka wrote: Anders Blomdell wrote: Jan Kiszka wrote: ...and may also add further latencies with the system has to speed up again. Anyway, there might be use-cases where power consumption is - besides latency - also an important issue. I'm just thinking of our smaller mobile robots where

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Jan Kiszka
Anders Blomdell wrote: > Jan Kiszka wrote: >> ...and may also add further latencies with the system has to speed up >> again. Anyway, there might be use-cases where power consumption is - >> besides latency - also an important issue. I'm just thinking of our >> smaller mobile robots where the power

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Jan Kiszka
Anders Blomdell wrote: > Jan Kiszka wrote: >> Jan Kiszka wrote: >> >>> ... >>> What about other time sources on x86? Which systems already have HPET >>> these days, and does this source not suffer from frequency scaling? I >>> once read that HPET is quite easy to program, is this true? IOW, would >

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Jim Cromie
Philippe Gerum wrote: Ive been running an ipipe kernel as the default since shortly after 1/7. Since then, Ive had a couple of freezes on boot, and sometimes bash's auto-complete takes longer to complete, Eh? Maybe the CONFIG_PCI_MSI syndrom again? Um, does this tell you anything ? $ zcat

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Anders Blomdell
Jan Kiszka wrote: Jan Kiszka wrote: ... What about other time sources on x86? Which systems already have HPET these days, and does this source not suffer from frequency scaling? I once read that HPET is quite easy to program, is this true? IOW, would it be worth considering to add this to the H

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Anders Blomdell
Jan Kiszka wrote: ...and may also add further latencies with the system has to speed up again. Anyway, there might be use-cases where power consumption is - besides latency - also an important issue. I'm just thinking of our smaller mobile robots where the power demand of the drives and the contr

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Philippe Gerum
Jan Kiszka wrote: Jan Kiszka wrote: ... What about other time sources on x86? Which systems already have HPET these days, and does this source not suffer from frequency scaling? I once read that HPET is quite easy to program, is this true? IOW, would it be worth considering to add this to the H

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Jan Kiszka
Jan Kiszka wrote: > ... > What about other time sources on x86? Which systems already have HPET > these days, and does this source not suffer from frequency scaling? I > once read that HPET is quite easy to program, is this true? IOW, would > it be worth considering to add this to the HAL? There a

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Jan Kiszka
Philippe Gerum wrote: > Jim Cromie wrote: >> Philippe Gerum wrote: >> >>> Ive been running an ipipe kernel as the default since shortly after 1/7. Since then, Ive had a couple of freezes on boot, and sometimes bash's auto-complete takes longer to complete, >>> >>> >>> Eh? M

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Philippe Gerum
Jim Cromie wrote: Philippe Gerum wrote: Ive been running an ipipe kernel as the default since shortly after 1/7. Since then, Ive had a couple of freezes on boot, and sometimes bash's auto-complete takes longer to complete, Eh? Maybe the CONFIG_PCI_MSI syndrom again? Um, does this tell

Re: [Xenomai-core] some results on my laptop

2006-02-03 Thread Philippe Gerum
Hi Jim, Jim Cromie wrote: some random sucesses .. Ive been running an ipipe kernel as the default since shortly after 1/7. Since then, Ive had a couple of freezes on boot, and sometimes bash's auto-complete takes longer to complete, Eh? Maybe the CONFIG_PCI_MSI syndrom again? but other th

Re: [Xenomai-core] some results on my laptop

2006-02-02 Thread Jim Cromie
Philippe Gerum wrote: Ive been running an ipipe kernel as the default since shortly after 1/7. Since then, Ive had a couple of freezes on boot, and sometimes bash's auto-complete takes longer to complete, Eh? Maybe the CONFIG_PCI_MSI syndrom again? Um, does this tell you anything ? $ zcat

Re: [Xenomai-core] some results on my laptop

2006-02-02 Thread Philippe Gerum
Hi Jim, Jim Cromie wrote: some random sucesses .. Ive been running an ipipe kernel as the default since shortly after 1/7. Since then, Ive had a couple of freezes on boot, and sometimes bash's auto-complete takes longer to complete, Eh? Maybe the CONFIG_PCI_MSI syndrom again? but other th