Commit Graph

7 Commits

Author SHA1 Message Date
Dave Wallace
1d1985de91 plugins: clean up plugin descriptions
- Make plugin descriptions more consistent
  so the output of "show plugin" can be
  used in the wiki.

Change-Id: I4c6feb11e7dcc5a4cf0848eed37f1d3b035c7dda
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2019-05-03 09:30:46 +00:00
Damjan Marion
47d165e4c1 perfmon: python to C parser for intel CPUs
EXAMPLE:
src/plugins/perfmon/intel_json_to_c.py \
  -i skylakex_core_v1.12.json \
  -o src/plugins/perfmon/perfmon_intel_skx.c \
  -m 0x55,0 \
  -m 0x55,1 \
  -m 0x55,2 \
  -m 0x55,3

Change-Id: I16ce059e231d340ecfcb6f6638e29c5b46304683
Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-03-20 03:06:52 -07:00
Dave Barach
53fe4a7926 perfmon: collect data on selected thread(s)
Add missing pre-input node runtime fork and refork code.
unix-epoll-input runs on all threads; each instance needs its own
runtime stats.

Change-Id: I16b02e42d0c95f863161176c4bb9f9917bef809d
Signed-off-by: Dave Barach <dave@barachs.net>
2019-01-27 03:01:59 +00:00
Dave Barach
ec595ef026 perfmon plugin: 2-way parallel stat collection
As a FUD reduction measure, this patch implements 2-way parallel
counter collection. Synthetic stat component counter pairs run at the
same time. Running two counters (of any kind) at the same time
naturally reduces the aggregate time required by an approximate
factor-of-2, depending on whether an even or odd number of stats have
been requested.

I don't completely buy the argument that computing synthetic stats
such as instructions-per-clock will be inaccurate if component counter
values are collected sequentially. Given uniform traffic pattern, it
must make no difference.

As the collection interval increases, the difference between serial
and parallel component counter collection will approach zero, see also
the Central Limit theorem.

Change-Id: I36ebdcf125e8882cca8a1929ec58f17fba1ad8f1
Signed-off-by: Dave Barach <dave@barachs.net>
2019-01-24 16:19:04 +00:00
Dave Barach
bef3619d25 Improve perfmon json table picker
Built a tool to chew up https://download.01.org/perfmon/mapfile.csv,
and output a table in this format:

typedef struct {
  u8 model;
  u8 stepping;
  u8 has_stepping;
  char *filename;
} file_by_model_and_stepping_t;

static const file_by_model_and_stepping_t fms_table [] =
{
 /* model, stepping, stepping valid, file */
  { 0x2E, 0x0, 0, "NehalemEX_core_V2.json" },
  { 0x1E, 0x0, 0, "NehalemEP_core_V2.json" },
<snip>
  { 0x55, 0x5, 1, "cascadelakex_core_v1.00.json" },
  { 0x55, 0x6, 1, "cascadelakex_core_v1.00.json" },
  { 0x55, 0x7, 1, "cascadelakex_core_v1.00.json" },
<snip>

Change-Id: Ie0e8a7e851799e9d060b966047745039c066ec7b
Signed-off-by: Dave Barach <dave@barachs.net>
2018-12-17 23:12:54 +00:00
Paul Vinciguerra
6cfd414e4c perfmon.c: Register additional cpuids.
Added/tested additional cpuids from our testbed.

Change-Id: Ifd3ea9e8e8231a8901966903bf5eceb635b82482
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2018-10-23 21:49:58 +00:00
Dave Barach
4d1a866aff X86_64 perf counter plugin
Change-Id: Ie5a00c15ee9536cc61afab57f6cadc1aa1972f3c
Signed-off-by: Dave Barach <dave@barachs.net>
2018-10-22 12:02:04 +00:00