Re: Python C API: how to mark a type as subclass of another type
Marco Sulla wrote at 2021-10-31 23:59 +0100:
>I have two types declared as
>
>PyTypeObject PyX_Type = {
>PyVarObject_HEAD_INIT(&PyType_Type, 0)
>
>etc.
>
>How can I mark one of the types as subclass of the other one? I tried
>to use tp_base but it didn't work.
Read the "Python/C Api" documentation. Watch out for `tp_base`.
--
https://mail.python.org/mailman/listinfo/python-list
System, configuration and Python performance
How to configure to improve Python performance in a system like the following: Windows 10 System Processor Intel(R) Core(TM) i7-9700 CPU @3.60GHz, 3.60 GHz Installed memory (RAM) 32.0 GB (31.8 GB usable) System type: 64-bit Operating System, x64-based processor I found that the Python script was runnig slowly and wanted to find out what is going on and what activities it is doing. I opened the Task Manager and found that there is not much CPU usage. Do I need to do something like configuration to improve Python's performance? Regards, David -- https://mail.python.org/mailman/listinfo/python-list
Re: System, configuration and Python performance
On 2021-11-01 23:02, Shaozhong SHI wrote: How to configure to improve Python performance in a system like the following: Windows 10 System Processor Intel(R) Core(TM) i7-9700 CPU @3.60GHz, 3.60 GHz Installed memory (RAM) 32.0 GB (31.8 GB usable) System type: 64-bit Operating System, x64-based processor I found that the Python script was runnig slowly and wanted to find out what is going on and what activities it is doing. I opened the Task Manager and found that there is not much CPU usage. Do I need to do something like configuration to improve Python's performance? If CPU usage is low, then that isn't the cause of the slowness. What about disk usage? What about network usage? If it's communicating across the internet, then it might be waiting for the other end. If that's the case, then there's probably not much you can do about it. -- https://mail.python.org/mailman/listinfo/python-list
Re: System, configuration and Python performance
On Tue, 2 Nov 2021 at 00:09, MRAB wrote: > On 2021-11-01 23:02, Shaozhong SHI wrote: > > How to configure to improve Python performance in a system like the > > following: > > > > Windows 10 > > > > System > > > > Processor Intel(R) Core(TM) i7-9700 CPU @3.60GHz, 3.60 GHz > > Installed memory (RAM) 32.0 GB (31.8 GB usable) > > System type: 64-bit Operating System, x64-based processor > > > > I found that the Python script was runnig slowly and wanted to find out > > what is going on and what activities it is doing. > > > > I opened the Task Manager and found that there is not much CPU usage. > > > > Do I need to do something like configuration to improve Python's > > performance? > > > If CPU usage is low, then that isn't the cause of the slowness. > > What about disk usage? > > What about network usage? > > If it's communicating across the internet, then it might be waiting for > the other end. If that's the case, then there's probably not much you > can do about it. > Both disk usage and network usage are very low as well. It is checking out responses of internet pages with given URLs. Regards, David > -- > https://mail.python.org/mailman/listinfo/python-list > -- https://mail.python.org/mailman/listinfo/python-list
Re: System, configuration and Python performance
On Tue, 2 Nov 2021 at 00:20, Shaozhong SHI wrote: > > > On Tue, 2 Nov 2021 at 00:09, MRAB wrote: > >> On 2021-11-01 23:02, Shaozhong SHI wrote: >> > How to configure to improve Python performance in a system like the >> > following: >> > >> > Windows 10 >> > >> > System >> > >> > Processor Intel(R) Core(TM) i7-9700 CPU @3.60GHz, 3.60 GHz >> > Installed memory (RAM) 32.0 GB (31.8 GB usable) >> > System type: 64-bit Operating System, x64-based processor >> > >> > I found that the Python script was runnig slowly and wanted to find out >> > what is going on and what activities it is doing. >> > >> > I opened the Task Manager and found that there is not much CPU usage. >> > >> > Do I need to do something like configuration to improve Python's >> > performance? >> > >> If CPU usage is low, then that isn't the cause of the slowness. >> >> What about disk usage? >> >> What about network usage? >> >> If it's communicating across the internet, then it might be waiting for >> the other end. If that's the case, then there's probably not much you >> can do about it. >> > > Both disk usage and network usage are very low as well. > > It is checking out responses of internet pages with given URLs. > > It is checking out whether each url is valid or not. > > > >> -- >> https://mail.python.org/mailman/listinfo/python-list >> > -- https://mail.python.org/mailman/listinfo/python-list
Re: System, configuration and Python performance
On Tue, Nov 2, 2021 at 11:21 AM Shaozhong SHI wrote: > > On Tue, 2 Nov 2021 at 00:09, MRAB wrote: > > > On 2021-11-01 23:02, Shaozhong SHI wrote: > > > How to configure to improve Python performance in a system like the > > > following: > > > > > > Windows 10 > > > > > > System > > > > > > Processor Intel(R) Core(TM) i7-9700 CPU @3.60GHz, 3.60 GHz > > > Installed memory (RAM) 32.0 GB (31.8 GB usable) > > > System type: 64-bit Operating System, x64-based processor > > > > > > I found that the Python script was runnig slowly and wanted to find out > > > what is going on and what activities it is doing. > > > > > > I opened the Task Manager and found that there is not much CPU usage. > > > > > > Do I need to do something like configuration to improve Python's > > > performance? > > > > > If CPU usage is low, then that isn't the cause of the slowness. > > > > What about disk usage? > > > > What about network usage? > > > > If it's communicating across the internet, then it might be waiting for > > the other end. If that's the case, then there's probably not much you > > can do about it. > > > > Both disk usage and network usage are very low as well. > > It is checking out responses of internet pages with given URLs. > That's almost certainly waiting for the server, then. There's nothing you can do - in Python or any other language - to speed that up. What you MAY be able to do is parallelize - do multiple requests at once - but not all servers will let you hammer them. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
