projects / OpenSPARC-T2-SAM / blame
| Commit | Line | Data |
|---|---|---|
| 920dae64 AT |
1 | # |
| 2 | # Copyright 2005 Sun Microsystems, Inc. All rights reserved. | |
| 3 | # Use is subject to license terms. | |
| 4 | # | |
| 5 | # ident "@(#)README.performance_check 1.1 05/10/05 SMI" | |
| 6 | # | |
| 7 | # | |
| 8 | # PERFORMANCE_CHECK | |
| 9 | # | |
| 10 | # This explains how to enable and use the PERFORMANCE_CHECK feature | |
| 11 | # | |
| 12 | ||
| 13 | [-] Enabling this Features: | |
| 14 | ||
| 15 | 1) Recompile legion | |
| 16 | You will need to compile legion with PERFORMANCE_CHECK=1. | |
| 17 | Edit your GNUMakefile in your legion build directory and | |
| 18 | re-compile legion. | |
| 19 | ||
| 20 | 2) Edit your config file (Optional Step) | |
| 21 | Modify your legion config file and add the 'perf_cycle_gap' value | |
| 22 | to your processor directive. You can use this variable to override | |
| 23 | the default value for perf_cycle_gap which is 10000000 instns. | |
| 24 | This determines the gap between performance checks in number of | |
| 25 | instructions executed. Decreasing this below the default can | |
| 26 | impact the performance of your legion. | |
| 27 | ||
| 28 | Example: | |
| 29 | processor "niagara" { | |
| 30 | clkfreq 5000000 ; | |
| 31 | cores 1; | |
| 32 | vthreads 1; | |
| 33 | nglobals 4; | |
| 34 | nwins 8; | |
| 35 | rstv 0xfff0000020; | |
| 36 | maxtl 7; | |
| 37 | perf_cycle_gap 0x10000000; | |
| 38 | } | |
| 39 | ||
| 40 | [-] Output | |
| 41 | ||
| 42 | When running legion in this mode, the simulation will print | |
| 43 | performance statistics since every 10000000 instns. | |
| 44 | ||
| 45 | Example: | |
| 46 | ||
| 47 | [0] Simulator mips=12.26, average mips=12.26, total_time=0 seconds, delta_time=815 milliseconds | |
| 48 | [0] Instn cnts: R=19 (0.00%), H=151008 (1.51%), P=9848973 (98.49%), U=0 (0.00%), Total=10000000 | |
| 49 | [0] xdcache: hits=2629150 (96.18%), misses=104374 (3.82%), avg_hits=(96.18%) | |
| 50 | [0] xicache: hits=9997121 (99.97%), misses=2879 (0.03%), avg hits=(99.97%) | |
| 51 | Instn count delta : 10000000 | |
| 52 | [0] Simulator mips=21.82, average mips=15.70, total_time=1 seconds, delta_time=458 milliseconds | |
| 53 | [0] Instn cnts: R=19 (0.00%), H=188652 (0.94%), P=19811329 (99.06%), U=0 (0.00%), Total=20000000 | |
| 54 | [0] xdcache: hits=3139833 (98.27%), misses=55321 (1.73%), avg_hits=(97.31%) | |
| 55 | [0] xicache: hits=9990666 (99.91%), misses=9334 (0.09%), avg hits=(99.94%) | |
| 56 | Instn count delta : 10000000 | |
| 57 | [0] Simulator mips=20.66, average mips=17.07, total_time=1 seconds, delta_time=484 milliseconds | |
| 58 | [0] Instn cnts: R=19 (0.00%), H=189247 (0.63%), P=29810734 (99.37%), U=0 (0.00%), Total=30000000 | |
| 59 | [0] xdcache: hits=3724278 (99.46%), misses=20038 (0.54%), avg_hits=(98.14%) | |
| 60 | [0] xicache: hits=9999780 (100.00%), misses=220 (0.00%), avg hits=(99.96%) | |
| 61 | Instn count delta : 10000000 | |
| 62 | [0] Simulator mips=19.93, average mips=17.70, total_time=2 seconds, delta_time=501 milliseconds | |
| 63 | [0] Instn cnts: R=19 (0.00%), H=204476 (0.51%), P=39795505 (99.49%), U=0 (0.00%), Total=40000000 | |
| 64 | [0] xdcache: hits=3606325 (99.54%), misses=16692 (0.46%), avg_hits=(98.52%) | |
| 65 | [0] xicache: hits=9998143 (99.98%), misses=1857 (0.02%), avg hits=(99.96%) | |
| 66 | Instn count delta : 10000000 | |
| 67 |