maemo.org - Talk - View Single Post - Battery almost empty after 5 hours with locked N810

vinc17	2008-07-11 , 00:33
Posts: 227 \| Thanked: 53 times \| Joined on Feb 2008 @ Lyon, France	#55

The battery drain problem occurred once again last evening. I had been logging system information every 15 minutes with "sar -A -u 900 8000" since the afternoon. Here's a summary of what I did:

At about 19:45, I plugged out the charger cable.
Then I used the N810 a little around 20:15, 21:55 (the N810 was warm, but the battery was full) and 22:15-22:35 (I ran a CPU-intensive task for several seconds).
At 22:35, the battery was still full.
At 01:50, the battery was almost empty (less than 20 hours when idle, less than 1 hour when in use).

The sar output shows that the N810 was constantly idle (but a very little loaded). So, my battery drain problem does not come from a task that would take much CPU time.

Code:

19:48:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
20:03:24          all      1.22      0.00      1.32      0.00      0.00     97.46
19:48:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
20:03:24            0       113      0.44      0.30      0.19
20:03:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
20:18:24          all      4.69      0.00      1.79      0.15      0.00     93.37
20:03:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
20:18:24            0       118      0.69      0.39      0.26
20:18:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
20:33:24          all      1.98      0.00      0.96      0.02      0.00     97.05
20:18:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
20:33:24            0       116      0.08      0.12      0.16
20:33:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
20:48:24          all      0.07      0.00      0.73      0.00      0.00     99.19
20:33:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
20:48:24            0       116      0.16      0.16      0.16
20:48:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
21:03:24          all      0.10      0.00      0.87      0.00      0.00     99.03
20:48:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
21:03:24            0       116      0.07      0.08      0.10
21:03:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
21:18:24          all      0.08      0.00      0.80      0.00      0.00     99.11
21:03:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
21:18:24            0       116      0.22      0.14      0.10
21:18:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
21:33:24          all      0.15      0.00      0.79      0.00      0.00     99.06
21:18:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
21:33:24            0       116      0.22      0.15      0.10
21:33:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
21:48:24          all      0.08      0.00      0.79      0.00      0.00     99.13
21:33:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
21:48:24            0       116      0.25      0.14      0.10
21:48:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
22:03:24          all      0.49      0.01      1.15      0.00      0.00     98.36
21:48:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
22:03:24            0       116      0.17      0.17      0.14
22:03:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
22:18:24          all      0.36      0.00      1.12      0.00      0.00     98.51
22:03:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
22:18:24            0       116      0.23      0.30      0.22
22:18:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
22:33:24          all     12.16      0.00      1.97      0.18      0.00     85.69
22:18:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
22:33:24            0       118      0.31      0.46      0.36
22:33:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
22:48:24          all      1.35      0.00      0.81      0.00      0.00     97.84
22:33:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
22:48:24            0       118      0.17      0.17      0.22
22:48:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
23:03:24          all      0.09      0.00      0.76      0.00      0.00     99.14
22:48:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
23:03:24            0       118      0.25      0.16      0.16
23:03:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
23:18:24          all      0.08      0.00      0.74      0.00      0.00     99.18
23:03:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
23:18:24            0       118      0.10      0.09      0.09
23:18:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
23:33:24          all      0.16      0.00      0.82      0.00      0.00     99.02
23:18:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
23:33:24            0       118      0.07      0.12      0.09
23:33:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
23:48:24          all      0.07      0.00      0.81      0.00      0.00     99.12
23:33:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
23:48:24            0       118      0.08      0.11      0.09
23:48:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
00:03:24          all      0.19      0.00      0.85      0.00      0.00     98.97
23:48:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
00:03:24            0       118      0.14      0.10      0.09
00:03:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
00:18:24          all      0.08      0.01      0.81      0.00      0.00     99.11
00:03:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
00:18:24            0       118      0.10      0.08      0.08
00:18:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
00:33:24          all      0.09      0.00      1.59      0.00      0.00     98.32
00:18:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
00:33:24            0       118      0.07      0.14      0.10
00:33:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
00:48:24          all      0.08      0.00      1.28      0.00      0.00     98.64
00:33:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
00:48:24            0       118      0.29      0.25      0.17
00:48:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
01:03:24          all      0.10      0.00      1.37      0.00      0.00     98.52
00:48:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
01:03:24            0       118      0.11      0.18      0.17
01:03:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
01:18:24          all      0.08      0.00      1.35      0.00      0.00     98.57
01:03:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
01:18:24            0       118      0.22      0.19      0.18
01:18:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
01:33:24          all      0.11      0.00      1.42      0.00      0.00     98.47
01:18:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
01:33:24            0       118      0.17      0.19      0.18
01:33:24          CPU     %user     %nice   %system   %iowait    %steal     %idle
01:48:24          all      0.08      0.00      1.35      0.00      0.00     98.57
01:33:24      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
01:48:24            0       118      0.23      0.15      0.16

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Bundyo, lcuk