Re: Believed resolved: SATA kern-buffRd read slow: based on promise driver bug

2008-01-08 Thread Tejun Heo
Linda Walsh wrote: >Is 'main' diff between NCQ/TCQ that TCQ can re-arrange 'write' > priority under driver control, whereas NCQ is mostly a FIFO queue? No, NCQ can reorder although I recently heard that windows issues overlapping NCQ commands and expects them to be processed in order (what

Re: Believed resolved: SATA kern-buffRd read slow: based on promise driver bug

2008-01-08 Thread Tejun Heo
Linda Walsh wrote: Is 'main' diff between NCQ/TCQ that TCQ can re-arrange 'write' priority under driver control, whereas NCQ is mostly a FIFO queue? No, NCQ can reorder although I recently heard that windows issues overlapping NCQ commands and expects them to be processed in order (what were

Re: Believed resolved: SATA kern-buffRd read slow: based on promise driver bug

2008-01-06 Thread Robert Hancock
Linda Walsh wrote: Mikael Pettersson wrote: Linda Walsh writes: > Mikael Pettersson wrote: > > Linda Walsh writes: > > > > Linda Walsh wrote: > > > read rate began falling; (.25 - .3); > > > more importantly; a chronic error message associated > > > with drive may be causing

Re: Believed resolved: SATA kern-buffRd read slow: based on promise driver bug

2008-01-06 Thread Linda Walsh
Mikael Pettersson wrote: Linda Walsh writes: > Mikael Pettersson wrote: > > Linda Walsh writes: > > > > Linda Walsh wrote: > > > read rate began falling; (.25 - .3); > > > more importantly; a chronic error message associated > > > with drive may be causing some or all of the

Re: Believed resolved: SATA kern-buffRd read slow: based on promise driver bug

2008-01-06 Thread Robert Hancock
Linda Walsh wrote: Mikael Pettersson wrote: Linda Walsh writes: Mikael Pettersson wrote: Linda Walsh writes: Linda Walsh wrote: read rate began falling; (.25 - .3); more importantly; a chronic error message associated with drive may be causing some or all of the

Re: Believed resolved: SATA kern-buffRd read slow: based on promise driver bug

2008-01-06 Thread Linda Walsh
Mikael Pettersson wrote: Linda Walsh writes: Mikael Pettersson wrote: Linda Walsh writes: Linda Walsh wrote: read rate began falling; (.25 - .3); more importantly; a chronic error message associated with drive may be causing some or all of the problem(s): ---

Re: Believed resolved: SATA kern-buffRd read slow: based on promise driver bug

2008-01-03 Thread Robert Hancock
Linda Walsh wrote: I seem to remember reading about some problems with Promise SATA & ACPI. Does this address that or is that a separate issue? (Am using no-acpi for now, but would like to try acpi again if it may be fixed (last time I tried it with this card, "sdb" went "offline" (once it

Re: Believed resolved: SATA kern-buffRd read slow: based on promise driver bug

2008-01-03 Thread Robert Hancock
Linda Walsh wrote: I seem to remember reading about some problems with Promise SATA ACPI. Does this address that or is that a separate issue? (Am using no-acpi for now, but would like to try acpi again if it may be fixed (last time I tried it with this card, sdb went offline (once it