** Summary changed:
- hddtemp might cause unnecessary disk activity
+ running hddtemp as a daemon might cause unnecessary disk activity
** Description changed:
Binary package hint: hddtemp
- httdtemp might cause unnecessary disk activity when running as a daemon.
- It is important for laptop users to reduce unnecessary disk-activity
+ running httdtemp as a daemon might cause unnecessary disk activity. It
+ is important for laptop users to reduce unnecessary disk-activity
because the harddrive head might be parked or the drive might be spun
down.
IMHO hddtemp should not need to access the harddisk after starting up
unless configured for logging.
I'm seeing things like this when using btrace :
8,0 0 17274 253.028000000 6613 G R 0 + 0 [hddtemp]
8,0 0 17275 253.028000000 6613 P R [hddtemp]
8,0 0 17276 253.028000000 6613 I R 0 (85 06 20 00 d8 00 00 00
00 00 4f 00 c2 00 b0 00 ..) [hddtemp]
8,0 0 17277 253.028000000 6613 D R 0 (85 06 20 00 d8 00 00 00
00 00 4f 00 c2 00 b0 00 ..) [hddtemp]
8,0 0 17278 253.136000000 5915 C R (85 06 20 00 d8 00 00 00 00
00 4f 00 c2 00 b0 00 ..) [2]
8,0 0 17279 253.136000000 6613 G R 0 + 0 [hddtemp]
8,0 0 17280 253.136000000 6613 P R [hddtemp]
8,0 0 17281 253.136000000 6613 I R 512 (85 08 2e 00 d0 00 01 00
00 00 4f 00 c2 00 b0 00 ..) [hddtemp]
8,0 0 17282 253.136000000 6613 D R 512 (85 08 2e 00 d0 00 01 00
00 00 4f 00 c2 00 b0 00 ..) [hddtemp]
8,0 0 17283 253.144000000 0 C R (85 08 2e 00 d0 00 01 00 00
00 4f 00 c2 00 b0 00 ..) [2]
Steps to reproduce :
btrace howto:
http://ubuntuforums.org/showpost.php?p=3722850&postcount=374
This might be one of the contributors to the famous Load_Cycle_Count bug :
https://bugs.launchpad.net/ubuntu/+source/acpi-support/+bug/17216
https://bugs.launchpad.net/ubuntu/+source/acpi-support/+bug/59695
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running hddtemp as a daemon might cause unnecessary disk activity
https://bugs.launchpad.net/bugs/160621
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