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| 00:19.38 | *** topic/#maemo is Welcome to #maemo http://maemo.org/intro/ | N9/harmattan related questions please in #harmattan ! | "firmware" see ~lf ~tabletsdev ~combined ~emmc ~flasher sdk: ~sb | http://wiki.maemo.org/Community_Council | Source: http://wiki.maemo.org/Sources | Chanlog: http://mg.pov.lt/maemo-irclog | #maemo-ssu is where the (few) devels and maintainers of the maemo-future meet |
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| 15:42.03 | Sicelo | not exactly big deal, but why would powertop crash on my N900? |
| 15:42.17 | Sicelo | http://paste.debian.net/922301/ |
| 15:42.31 | KotCzarny | trying to access some inexistent resource? |
| 15:42.38 | Sicelo | that's strace powertop .. zzztop works fine however |
| 15:42.49 | Sicelo | and powertop worked before |
| 15:43.09 | KotCzarny | you've got a virus? |
| 15:43.11 | KotCzarny | ;) |
| 15:43.24 | Sicelo | of course not |
| 15:43.42 | KotCzarny | usually segv is a programmer error |
| 15:43.58 | KotCzarny | assuming too much about input and failing when it's out of assumptions |
| 15:44.13 | KotCzarny | hard to guess what is the cause in this case |
| 15:44.23 | KotCzarny | you can also try to run it under gdb |
| 15:45.29 | Sicelo | i don't have it on N900. i guess i'll wait for next power down event. 27 days uptime atm |
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| 16:54.26 | DocScrutinizer05 | Sicelo: segv usually means "pointer to <invalid addr>" (often zero). Anyway it seems to not happen in a system function, and since we have no source for powertop, it's pretty hard to tell what goes haywire |
| 16:57.35 | DocScrutinizer05 | doesn't use maemo powertop since ages, zzztop is so many magnitudes better |
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| 18:09.45 | Sicelo | thanks for the info DocScrutinizer05 & KotCzarny |
| 18:17.53 | Vajb | hmm is it safe to kill mafw dbus wrapper? |
| 18:18.38 | Vajb | i think it is doing something stupid since i can't recall it using 15% cpu constantly |
| 18:18.42 | freemangordon | Vajb: yes, it will be restarted when needed again |
| 18:18.47 | Vajb | before i mean |
| 18:18.54 | Vajb | ok |
| 18:29.44 | DocScrutinizer05 | "using 15% CPU" is pretty much bogus values on a device with dynamic CPU clock freq scaling, and even zeroclock |
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| 18:32.01 | DocScrutinizer05 | "using 5% CPU" might be much worse (when it's with 1000MHz CPU clock, and 100% C1 state) than "using 100% CPU" with CPU at 250MHz for a 20ms per second, and sleping for the rest of the time |
| 18:32.58 | DocScrutinizer05 | nevertheless mafw wrapper shouldn't use any percentage ( >0%) of CPU, unless you have some media content active |
| 18:34.24 | DocScrutinizer05 | the 'problem" with %-CPU is that it's a relative value in relation to the total CPU cycles done |
| 18:34.40 | DocScrutinizer05 | afaik |
| 18:35.10 | DocScrutinizer05 | definitely it's not taking CPU freq into account |
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| 18:37.25 | DocScrutinizer05 | and CPU freq = 0Hz is completely throwing over all the numbers |
| 18:38.14 | Vajb | <PROTECTED> |
| 18:38.33 | Vajb | before i killed mafw it was around 2,6 |
| 18:39.25 | Vajb | i know it doesn't make sense with 15 percent cpu usage, but it seemed to fix that anyways. |
| 18:59.57 | DocScrutinizer05 | oh, it makes perfect sense. Load can be >1 even on single core, since load also counts in wait-for-IO |
| 19:00.16 | DocScrutinizer05 | during which CPU is (or can be) idle |
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| 21:02.15 | sixwheeledbeast | I know I didn't write it but I'm glad I had time to package zzztop for maemo, it's only a perl script but very handy to pull a useful diag tool from Extras. |
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