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Date: Thu, 25 Jun 2009 02:11:00 +0530
From: Jaswinder Singh Rajput <jaswinder@...nel.org>
To: Ingo Molnar <mingo@...e.hu>
Cc: Thomas Gleixner <tglx@...utronix.de>,
Peter Zijlstra <peterz@...radead.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -tip] perf_counter tools: shorten names for events
On Tue, 2009-06-23 at 21:56 +0200, Ingo Molnar wrote:
> * Jaswinder Singh Rajput <jaswinder@...nel.org> wrote:
>
> here's an edited version of my suggestions:
>
> > 259250339 dL1-loads (scaled from 22.73%)
> > 1187200 dL1-load-misses (scaled from 23.01%)
> > 150454 dL1-stores (scaled from 23.01%)
> > 494252 dL1-prefetches (scaled from 23.29%)
> > 362661 dL1-prefetch-misses (scaled from 23.73%)
> > 247343449 iL1-loads (scaled from 23.71%)
> > 4804990 iL1-load-misses (scaled from 23.85%)
> > 108711 iL1-prefetches (scaled from 23.83%)
> > 6260313 LLC-loads (scaled from 23.82%)
> > 605425 LLC-load-misses (scaled from 23.82%)
> > 6898075 LLC-stores (scaled from 23.96%)
> > 248334160 dTLB-loads (scaled from 23.95%)
> > 3812835 dTLB-load-misses (scaled from 23.87%)
> > 253208496 iTLB-loads (scaled from 23.73%)
> > 5873 iTLB-load-misses (scaled from 23.46%)
> > 110891027 branches (scaled from 23.21%)
> > 5529622 branch-misses (scaled from 23.02%)
>
> We can leave out 'refs' i think - without any qualification
> statements like '247343449 iL1-loads' are still unambigious i think.
>
> Plus we can abbreviate dL1/iL1/dTLB/iTLB. The capitalization
> matters. Also, note that it's LLC (Last Level Cache), not L2.
>
> ( Sidenote: L2 can still be an alias for LLC, even though some CPUs
> have a L3 too. )
>
> Note, branches are special - we dont really have 'branch loads',
> branches are executions. 'Branches' and 'Branch-misses' are the
> right term.
>
[PATCH] perf_counter tools: shorten names for events
Special handling for branches as branches are special
we don't really have 'branch loads', branches are executions.
'Branches' and 'Branch-misses' are the right term.
On AMD box:
$ ./perf stat -e l1d -e l1d-misses -e l1d-write -e l1d-prefetch -e l1d-prefetch-miss -e l1i -e l1i-misses -e l1i-prefetch -e l2 -e l2-misses -e l2-write -e dtlb -e dtlb-misses -e itlb -e itlb-misses -e bpu -e bpu-misses -- ls -lR /usr/include/ > /dev/null
Before :
Performance counter stats for 'ls -lR /usr/include/':
248064467 L1-data-Cache-Load-Referencees (scaled from 23.27%)
1001433 L1-data-Cache-Load-Misses (scaled from 23.34%)
153691 L1-data-Cache-Store-Referencees (scaled from 23.34%)
423248 L1-data-Cache-Prefetch-Referencees (scaled from 23.33%)
302138 L1-data-Cache-Prefetch-Misses (scaled from 23.25%)
251217546 L1-instruction-Cache-Load-Referencees (scaled from 23.25%)
5757005 L1-instruction-Cache-Load-Misses (scaled from 23.23%)
93435 L1-instruction-Cache-Prefetch-Referencees (scaled from 23.24%)
6496073 L2-Cache-Load-Referencees (scaled from 23.32%)
609485 L2-Cache-Load-Misses (scaled from 23.45%)
6876991 L2-Cache-Store-Referencees (scaled from 23.71%)
248922840 Data-TLB-Cache-Load-Referencees (scaled from 23.94%)
5828386 Data-TLB-Cache-Load-Misses (scaled from 24.17%)
257613506 Instruction-TLB-Cache-Load-Referencees (scaled from 24.20%)
6833 Instruction-TLB-Cache-Load-Misses (scaled from 23.88%)
109043606 Branch-Cache-Load-Referencees (scaled from 23.64%)
5552296 Branch-Cache-Load-Misses (scaled from 23.42%)
0.413702461 seconds time elapsed.
After :
Performance counter stats for 'ls -lR /usr/include/':
283542921 dL1-loads (scaled from 23.28%)
1848314 dL1-load-misses (scaled from 22.94%)
168963 dL1-stores (scaled from 22.94%)
739249 dL1-prefetches (scaled from 22.45%)
501021 dL1-prefetch-misses (scaled from 22.25%)
275037259 iL1-loads (scaled from 23.40%)
6030825 iL1-load-misses (scaled from 23.26%)
166760 iL1-prefetches (scaled from 24.31%)
7224781 LLC-loads (scaled from 24.76%)
821097 LLC-load-misses (scaled from 24.07%)
7070549 LLC-stores (scaled from 24.45%)
251586242 dTLB-loads (scaled from 24.65%)
5127780 dTLB-load-misses (scaled from 23.99%)
276782014 iTLB-loads (scaled from 23.77%)
16787 iTLB-load-misses (scaled from 23.72%)
123408502 branches (scaled from 22.88%)
5843856 branch-misses (scaled from 22.87%)
1.417039891 seconds time elapsed.
Reported-by : Ingo Molnar <mingo@...e.hu>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@...il.com>
---
tools/perf/util/parse-events.c | 45 ++++++++++++++++++++++++++-------------
1 files changed, 30 insertions(+), 15 deletions(-)
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 06af2fa..fa6e2e5 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -71,23 +71,23 @@ static char *sw_event_names[] = {
#define MAX_ALIASES 8
static char *hw_cache[][MAX_ALIASES] = {
- { "L1-data", "l1-d", "l1d" },
- { "L1-instruction", "l1-i", "l1i" },
- { "L2", "l2" },
- { "Data-TLB", "dtlb", "d-tlb" },
- { "Instruction-TLB", "itlb", "i-tlb" },
- { "Branch", "bpu" , "btb", "bpc" },
+ { "dL1", "L1-d", "l1d", },
+ { "iL1", "L1-i", "l1i", },
+ { "LLC", "L2", },
+ { "dTLB", "d-tlb", },
+ { "iTLB", "i-tlb", },
+ { "branch", "branches", "bpu", "btb", "bpc", },
};
static char *hw_cache_op[][MAX_ALIASES] = {
- { "Load", "read" },
- { "Store", "write" },
- { "Prefetch", "speculative-read", "speculative-load" },
+ { "load", "loads", "read", },
+ { "store", "stores", "write", },
+ { "prefetch", "prefetches", "speculative-read", "speculative-load", },
};
static char *hw_cache_result[][MAX_ALIASES] = {
- { "Reference", "ops", "access" },
- { "Miss" },
+ { "refs", "ops", "access", },
+ { "misses", "miss", },
};
char *event_name(int counter)
@@ -123,10 +123,25 @@ char *event_name(int counter)
if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX)
return "unknown-ext-hardware-cache-result";
- sprintf(name, "%s-Cache-%s-%ses",
- hw_cache[cache_type][0],
- hw_cache_op[cache_op][0],
- hw_cache_result[cache_result][0]);
+ /*
+ * special handling for branches
+ * we are only interested in BPU, READ
+ */
+ if (cache_type == PERF_COUNT_HW_CACHE_BPU && cache_op)
+ return "unknown";
+ else if (cache_type == PERF_COUNT_HW_CACHE_BPU) {
+ if (cache_result)
+ sprintf(name, "%s-%s", hw_cache[cache_type][0],
+ hw_cache_result[cache_result][0]);
+ else
+ sprintf(name, "%s", hw_cache[cache_type][1]);
+ } else if (cache_result)
+ sprintf(name, "%s-%s-%s", hw_cache[cache_type][0],
+ hw_cache_op[cache_op][0],
+ hw_cache_result[cache_result][0]);
+ else
+ sprintf(name, "%s-%s", hw_cache[cache_type][0],
+ hw_cache_op[cache_op][1]);
return name;
}
--
1.6.0.6
--
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