Re: [RFC][PATCH 2/2] ACPI: handle timer ticks proactively

From: Len Brown
Date: Mon Oct 16 2006 - 00:58:39 EST

I ran bltk this patch vs 2.6.18.1 on a Dell i6400 Core Duo laptop.
Initial result (1 measurement of each kernel) is that
battery life is unchanged, but response time improves with the new patch.

Summary files attached.

thanks,
-Len

Workload
Workload : Open Office (office) 1.0.4

System
Manufacturer : Dell Inc.
Product Name : MM061
System Release : SUSE LINUX 10.1 (i586)
Kernel Release : 2.6.18.1-dirty

CPU
CPU : 0
CPU Model : Genuine Intel(R) CPU T2500 @ 2.00GHz
Cache Size : 2048 KB
Num Logical : 2
Governor : ondemand
Timer : 0.00
Interrupts : 8.93
Load : 1.58%
Max Frequecy : 2000000
Min Frequency : 1000000
Average Frequency : 1017733
Bus Master Activity : 0.00
C1 : 31.88
C2 : 32.65
C3 : 260.95
P0 : 1.69
P1 : 0.09
P2 : 0.05
P3 : 98.16

CPU
CPU : 1
CPU Model : Genuine Intel(R) CPU T2500 @ 2.00GHz
Cache Size : 2048 KB
Num Logical : 2
Governor : ondemand
Timer : 249.98
Interrupts : 2.82
Load : 1.92%
Max Frequecy : 2000000
Min Frequency : 1000000
Average Frequency : 1017733
Bus Master Activity : 0.00
C1 : 4.19
C2 : 5.03
C3 : 287.82
P0 : 1.69
P1 : 0.09
P2 : 0.05
P3 : 98.16

Memory
Memory Size : 2064260 kB
Swap Size : 2104472 kB
Max Memory : 664196 kB
Max Swap : 0 kB

Display
Grafic Model : Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller (rev 03)
Display Size : 1280x800x16
Display State : on 100.00%, standby 0.00%, suspend 0.00%, off 0.00%

HD
HD Model : HTS721010G9SA00
HD Size : 100030 MBytes (100 GB)
HD RPM : -
HD Reads : 0.00 per sec
HD Writes : 2.77 per sec
HD State : active/idle 0.00%, standby 100.00%, sleeping 0.00%

BAT
Battery Model : DELLUD2646
Charging State : charged
Design Voltage : 11100 mV
Design Capacity : 53280 mWh (100.00%)
Last Full Capacity : 48384 mWh (90.81%)
Remaining Capacity : 53280 mWh (100.00%)
Start Capacity : 53280 mWh (100.00%)
Finish Capacity : 11 mWh (0.02%)
Drain Rate : 16.31 W (4.53 mWh per sec)
Design Battery Rating : 196 min (03:16:02)

Rating
Battery Rating : 196 min (03:16:00)
Iterations : 16.33
Cycle Time : 720.00 sec
Work Time : 481.48 sec
Response Time : 8.28 sec
Score : 289.92

Source
Source : results.office.amb2a

Comment
Comment : -

Test Result
Result : Passed


Workload
Workload : Open Office (office) 1.0.4

System
Manufacturer : Dell Inc.
Product Name : MM061
System Release : SUSE LINUX 10.1 (i586)
Kernel Release : 2.6.18.1

CPU
CPU : 0
CPU Model : Genuine Intel(R) CPU T2500 @ 2.00GHz
Cache Size : 2048 KB
Num Logical : 2
Governor : ondemand
Timer : 0.00
Interrupts : 11.84
Load : 2.18%
Max Frequecy : 2000000
Min Frequency : 1000000
Average Frequency : 1016988
Bus Master Activity : 0.00
C1 : 0.00
C2 : 10.39
C3 : 565.52
P0 : 1.63
P1 : 0.09
P2 : 0.03
P3 : 98.25

CPU
CPU : 1
CPU Model : Genuine Intel(R) CPU T2500 @ 2.00GHz
Cache Size : 2048 KB
Num Logical : 2
Governor : ondemand
Timer : 249.98
Interrupts : 0.00
Load : 1.43%
Max Frequecy : 2000000
Min Frequency : 1000000
Average Frequency : 1016988
Bus Master Activity : 0.00
C1 : 0.00
C2 : 11.11
C3 : 323.20
P0 : 1.63
P1 : 0.09
P2 : 0.03
P3 : 98.25

Memory
Memory Size : 2064260 kB
Swap Size : 2104472 kB
Max Memory : 658288 kB
Max Swap : 0 kB

Display
Grafic Model : Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller (rev 03)
Display Size : 1280x800x16
Display State : on 100.00%, standby 0.00%, suspend 0.00%, off 0.00%

HD
HD Model : HTS721010G9SA00
HD Size : 100030 MBytes (100 GB)
HD RPM : -
HD Reads : 0.07 per sec
HD Writes : 2.76 per sec
HD State : active/idle 0.00%, standby 100.00%, sleeping 0.00%

BAT
Battery Model : DELLUD2646
Charging State : charged
Design Voltage : 11100 mV
Design Capacity : 53280 mWh (100.00%)
Last Full Capacity : 48362 mWh (90.77%)
Remaining Capacity : 53280 mWh (100.00%)
Start Capacity : 53280 mWh (100.00%)
Finish Capacity : 55 mWh (0.10%)
Drain Rate : 16.29 W (4.53 mWh per sec)
Design Battery Rating : 196 min (03:16:12)

Rating
Battery Rating : 196 min (03:16:00)
Iterations : 16.33
Cycle Time : 720.00 sec
Work Time : 482.11 sec
Response Time : 8.87 sec
Score : 270.59

Source
Source : results.office.ref

Comment
Comment : -

Test Result
Result : Passed