Problem with SMI fix
- Tonico
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2012/08/14 05:09:13
RTH| lat min| ovl min| lat avg| lat max| ovl max| overruns
RTD| -680| -695| 3306| 23104| 28287| 0
RTD| -680| -695| 3372| 17636| 28287| 0
RTD| -684| -695| 3351| 24973| 28287| 0
RTD| -685| -695| 3321| 15689| 28287| 0
RTD| -680| -695| 3316| 26840| 28287| 0
RTD| -681| -695| 3307| 17590| 28287| 0
RTD| -686| -695| 3375| 24792| 28287| 0
RTD| -685| -695| 3343| 12006| 28287| 0
RTD| -686| -695| 3293| 17887| 28287| 0
RTD| -680| -695| 3312| 14592| 28287| 0
RTD| -680| -695| 3378| 14241| 28287| 0
RTD| -680| -695| 3330| 18487| 28287| 0
RTD| -681| -695| 3294| 14982| 28287| 0
RTD| -680| -695| 3306| 12685| 28287| 0
RTD| -686| -695| 3334| 16193| 28287| 0
RTD| -685| -695| 3288| 15050| 28287| 0
RTD| -681| -695| 3326| 24640| 28287| 0
RTD| -682| -695| 3281| 13126| 28287| 0
RTD| -686| -695| 3291| 24490| 28287| 0
RTD| -683| -695| 3384| 16788| 28287| 0
RTD| -683| -695| 3324| 12373| 28287| 0
2012/08/14 05:09:34
I am not throwing any parties yet as the system has no load other than the test. The project for today is figure out how to create a load. Being a real novice at Linux just running this or that is a major project for me reading how to do this and that....
Thanks for help so far
Tony
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- BigJohnT
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linuxcnc.org/docs/html/common/Getting_EMC.html#_burning_the_cd
John
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- Tonico
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RTH| lat min| ovl min| lat avg| lat max| ovl max| overruns
RTD| -530| -536| 2210| 14215| 17777| 0
RTD| -532| -536| 2075| 13529| 17777| 0
RTD| -528| -536| 2105| 14424| 17777| 0
RTD| -530| -536| 2097| 15322| 17777| 0
RTD| -530| -536| 2160| 13936| 17777| 0
RTD| -534| -536| 2081| 14566| 17777| 0
RTD| -530| -536| 2144| 13552| 17777| 0
RTD| -529| -536| 2100| 14847| 17777| 0
RTD| -530| -536| 2060| 13835| 17777| 0
RTD| -530| -536| 2089| 14149| 17777| 0
RTD| -530| -536| 2177| 13901| 17777| 0
RTD| -532| -536| 2120| 14750| 17777| 0
RTD| -530| -536| 2154| 12838| 17777| 0
RTD| -530| -536| 2102| 12756| 17777| 0
RTD| -528| -536| 2120| 13540| 17777| 0
RTD| -531| -536| 2084| 14236| 17777| 0
RTD| -525| -536| 2419| 3162332| 3162332| 31
RTD| -534| -536| 2140| 13898| 3162332| 31
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2012/08/15 05:51:41
RTH| lat min| ovl min| lat avg| lat max| ovl max| overruns
RTD| -529| -536| 2202| 15205| 3162332| 31
RTD| -525| -536| 2146| 13809| 3162332| 31
RTD| -525| -536| 2188| 13537| 3162332| 31
RTD| -530| -536| 2121| 13281| 3162332| 31
RTD| -530| -536| 2121| 12879| 3162332| 31
RTD| -535| -536| 2106| 13409| 3162332| 31
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RTD| -532| -536| 2089| 14352| 3162332| 31
RTD| -528| -536| 2148| 13988| 3162332| 31
RTD| -534| -536| 2083| 12868| 3162332| 31
RTD| -528| -536| 2130| 13722| 3162332| 31
RTD| -530| -536| 2105| 13661| 3162332| 31
RTD| -531| -536| 2107| 14067| 3162332| 31
RTD| -536| -536| 2110| 13856| 3162332| 31
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RTD| -530| -536| 2136| 14324| 3162332| 31
RTD| -529| -536| 2111| 14183| 3162332| 31
2012/08/15 05:52:02
RTH| lat min| ovl min| lat avg| lat max| ovl max| overruns
RTD| -530| -536| 2203|
Since I last posted I installed an older ATI AGP (32MB) video card. Turned everything off in Bios that could be turned off including sound.
The spike is very intermittent. I have seen it seconds into the test or anything up to almost 30 minutes.
Any words of wisdom before I convert this Motherboard into a frisbee?
Thanks
Tony
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- andypugh
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Unless you are enjoying the puzzle, I think it is time to try a different motherboard. The current one is likely to come in useful for something eventually.
Pick something from the "good list"
wiki.linuxcnc.org/cgi-bin/wiki.pl?Latency-Test
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- Tonico
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Thank you
Tony
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- Tonico
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I am testing anothe motherboard under 8.04. It is showing a lot of promisse with spikes or over runs at all. This one uses an AMD Athlon XP1800. I have looked at the list of "good" hardware and I notice that many instances it is not mentioned what version of Ubuntu they were tested under. Does this mean that they work under 8.xx and 10.xx ?
For this CPU is there benefits to run under 10.xx?
TIA
Tony
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- andypugh
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I don't know of any machines that perform better for realtime under 10.04, and quite a few that won't work with it.I notice that many instances it is not mentioned what version of Ubuntu they were tested under. Does this mean that they work under 8.xx and 10.xx ?
For this CPU is there benefits to run under 10.xx?
The advantages are a better Ubuntu version and multiprocessor support. The later Ubuntu has support for more hardware.
Note that you can run any current LinuxCNC version on either OS.
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- ArcEye
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That list was mostly compiled before 10.04 was released, so most were tested under 8.04
There is no advantage whatsoever in using 10.04 on a board of that vintage, see my FAQ for some of the reasons
www.linuxcnc.org/index.php/english/compo...ew&catid=18&id=19125
10.04 is needed for newer boards, only because the 2.6.24 kernel did not support the chipsets etc they have on them.
Sometimes you can ignore these, if for instance it is the sound that is not supported.
Sometimes however the Live CD for 8.04 will not even run let alone install on newer boards, so there is no choice.
When people do install 10.04, on multi core processors especially, they then have to take steps to revert the board back as if it was a single processor, to get half decent latency.
Higher number is not better where Ubuntu is concerned, best is what runs best on your machine.
regards
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- Tonico
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If I try to run it from the drop down menu the system sort of goes into La-La land for a while than it opens a window, nothing happens, than closes it.
If I try to run the test from the command line after that I get:
insmod: error inserting '/usr/realtime-2.6.24-16-rtai/modules/rtai_lxrt.ko': -1 Invalid module format
ERROR: cannot load /usr/realtime-2.6.24-16-rtai/modules/rtai_lxrt.ko
CANNOT CREATE MAILBOX
CANNOT FIND MAILBOX
The only way I can get it to run is by rebooting. I am fairly certain that there is a more elegant way to clear this that I don't know about. But is there a problem with the earlier version of LinuxCNC that causes this?
TIA
Tony
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- ArcEye
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It sounds like the realtime system is not unloading properly for some reason after the first latency test.
What on earth the
is about I don't know, maybe a corrupted menu.CANNOT CREATE MAILBOX
CANNOT FIND MAILBOX
It really does not matter, you should only need to run latency-test once properly in the lifetime of the machine, unless you change hardware (video card perhaps).
Run it for several hours as per the instructions, write down the figures and go from there
regards
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