Products > Test Equipment
4 channel Keysight 1000x series scope
TK:
I think Spear600 is old compared to new CPUs running faster and with more cores and Probably the old Windows CE was a better fit. That is why I asked about the responsiveness as it seems Linux is heavier and the same reason for it to take 1 min to boot might impact on the performance of the scope app
ginbot86:
What a twist, the new scope runs Linux. I guess that makes sense, with WinCE 6 reaching EOL, and STMicro advertises that their SPEAr600 supports Linux anyway. I wonder how Linux takes advantage of the processor's two cores (to my knowledge, WinCE 6 didn't support multi-core processing).
I guess that means we'll need a different approach to run Doom on Keysight's newer lineup of scopes. ;)
nctnico:
--- Quote from: TK on December 31, 2018, 03:56:39 am ---I think Spear600 is old compared to new CPUs running faster and with more cores and Probably the old Windows CE was a better fit. That is why I asked about the responsiveness as it seems Linux is heavier and the same reason for it to take 1 min to boot might impact on the performance of the scope app
--- End quote ---
Linux doesn't have to be heavier. That is nonsense. Also the boot time of a Linux system is defined by the speed of the flash being used. Put a Sata SSD in an embedded Linux system and it wil start in seconds. Besides that the oscilloscope likely does a quick self test during starting.
LapTop006:
--- Quote from: nctnico on December 31, 2018, 09:13:35 am ---
--- Quote from: TK on December 31, 2018, 03:56:39 am ---I think Spear600 is old compared to new CPUs running faster and with more cores and Probably the old Windows CE was a better fit. That is why I asked about the responsiveness as it seems Linux is heavier and the same reason for it to take 1 min to boot might impact on the performance of the scope app
--- End quote ---
Linux doesn't have to be heavier. That is nonsense. Also the boot time of a Linux system is defined by the speed of the flash being used. Put a Sata SSD in an embedded Linux system and it wil start in seconds. Besides that the oscilloscope likely does a quick self test during starting.
--- End quote ---
Ideally sure, but there's plenty of ways a default normal Linux system is slower to boot than it needs to be for fixed hardware configurations (scanning busses that will never be used etc.)
*Done well* there should be minimal practical differences between WinCE and Linux, but if you just use a generic kernel & image (or without systemd which for all its faults is normally faster) it probably is slower.
TK:
--- Quote from: nctnico on December 31, 2018, 09:13:35 am ---
--- Quote from: TK on December 31, 2018, 03:56:39 am ---I think Spear600 is old compared to new CPUs running faster and with more cores and Probably the old Windows CE was a better fit. That is why I asked about the responsiveness as it seems Linux is heavier and the same reason for it to take 1 min to boot might impact on the performance of the scope app
--- End quote ---
Linux doesn't have to be heavier. That is nonsense. Also the boot time of a Linux system is defined by the speed of the flash being used. Put a Sata SSD in an embedded Linux system and it wil start in seconds. Besides that the oscilloscope likely does a quick self test during starting.
--- End quote ---
What I meant is that PROBABLY the specific Linux distro in use is heavier than Windows CE on the SPEAR600 that the Keysight scope uses.
I know it can be made to boot in 10 seconds like the R&S or the Micsig TO1000 scopes, probably by using some battery backed memory to keep persistent code and data in memory saved for the next boot. I wonder if R&S scope takes longer to boot after a firmware update or the update process per se stores certain code & data in persistent memory.
But if they decided to go with the 60 seconds boot time, then there must be hardware limitations on the current SPEAR600 + flash + ASIC interface to implement specific techniques like smartphones or tablets.
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