Does no of bps have any impact on windbg performance or system response time
including the host system.?
Regds,
Does no of bps have any impact on windbg performance or system response time including the host syst
If you mean does the speed of the serial port in kbps increase or decrease
the usefullness of windbg, then the answer is yes. The 115,200 Kbps speed
is the maximum using a standard 16550AFN serial port or its equivalent.
1394a is the best connection option if you have the Texas Instrument chipset
on both target and host - especially the target. For Vista the new USB
dongle is good if you have standard EHCI controllers. I know Dell Optiplex
machines will work as the target. Real the rules about the USB support as
many 3rd party motherboards will not work.
“Praveen Kumar Amritaluru” wrote in message
news:xxxxx@windbg…
> Does no of bps have any impact on windbg performance or system response
> time including the host system.?
>
> Regds,
>
>
>
>
>
“David J. Craig” wrote in message news:xxxxx@windbg…
> If you mean does the speed of the serial port in kbps increase or decrease
Probably OP means the number of breakpoints set.
–PA
If so, it is definitely the wrong abbreviation. Normal breakpoints that
have no conditional tests will now slow down the program execution. Even
the hardware breakpoints should not slow down the system unless there are
conditional tests to be done when it triggers.
“Pavel A.” wrote in message news:xxxxx@windbg…
> “David J. Craig” wrote in message
> news:xxxxx@windbg…
>> If you mean does the speed of the serial port in kbps increase or
>> decrease
>
> Probably OP means the number of breakpoints set.
>
> --PA
>
>
>
Thanks for the reply.
Did you mean “not slow down” and “hardwired breakpoints”…
Added an s to bp command to mean "breakpoint"s -> bps 
“David J. Craig” wrote in message
news:xxxxx@windbg…
> If so, it is definitely the wrong abbreviation. Normal breakpoints that
> have no conditional tests will now slow down the program execution. Even
> the hardware breakpoints should not slow down the system unless there are
> conditional tests to be done when it triggers.
>
> “Pavel A.” wrote in message news:xxxxx@windbg…
>> “David J. Craig” wrote in message
>> news:xxxxx@windbg…
>>> If you mean does the speed of the serial port in kbps increase or
>>> decrease
>>
>> Probably OP means the number of breakpoints set.
>>
>> --PA
>>
>>
>>
>
>
>
That is not normal usage in English. ‘bps’ is a speed indicator meaning
‘bits per second’. ‘bkpt’ with the plural ‘s’ as needed is what I have
seen. Hardwired breakpoints use the hardware registers and should not
suffer a speed reduction, but check the Intel and AMD manuals to be certain
since it might require an additional cycle for testing, but it will be much
faster than using software emulation where every instruction is run one at a
time to see if it reads, writes, etc. some specific memory address. Windows
can use serial debugging so that may be why I don’t see the use of ‘bps’ to
refer to breakpoints. The abbreviation might be acceptable if the context
was known, but I didn’t see it from the subject.
Windbg does use the single opcode ‘0xCC’ to set normal breakpoints in code.
So there is no limit on the number that can be used except for internal
table limitations in windbg which does exist. If you add that opcode to
your program source, then there should be no limit since windbg won’t know
about them until they trigger.
“Praveen Kumar Amritaluru” wrote in message
news:xxxxx@windbg…
> Thanks for the reply.
> Did you mean “not slow down” and “hardwired breakpoints”…
>
> Added an s to bp command to mean "breakpoint"s -> bps
>
>
> “David J. Craig” wrote in message
> news:xxxxx@windbg…
>> If so, it is definitely the wrong abbreviation. Normal breakpoints that
>> have no conditional tests will now slow down the program execution. Even
>> the hardware breakpoints should not slow down the system unless there are
>> conditional tests to be done when it triggers.
>>
>> “Pavel A.” wrote in message news:xxxxx@windbg…
>>> “David J. Craig” wrote in message
>>> news:xxxxx@windbg…
>>>> If you mean does the speed of the serial port in kbps increase or
>>>> decrease
>>>
>>> Probably OP means the number of breakpoints set.
>>>
>>> --PA
>>>
>>>
>>>
>>
>>
>>
>
>
>