On 05/28/20 17:32 PM, Ian Rogers wrote:
>
> So on tip/perf/core with:
> 1c0cd2dbb993 perf jvmti: Fix jitdump for methods without debug info
> 3ce17c1e52f4 perf jvmti: remove redundant jitdump line table entries
>
> I've been trying variants of:
>
> Before:
> /tmp/perf/perf record -k 1 -e cycles:u -
On 06/01/20 16:53 PM, Ian Rogers wrote:
> On Sun, May 31, 2020 at 11:17 PM Nick Gasson wrote:
>>
>> On 05/28/20 17:32 PM, Ian Rogers wrote:
>> >
>> > So on tip/perf/core with:
>> > 1c0cd2dbb993 perf jvmti: Fix jitdump for methods without debug info
>
On 05/26/20 19:55 PM, Jiri Olsa wrote:
> On Fri, May 22, 2020 at 02:53:30PM +0800, Nick Gasson wrote:
>> For each PC/BCI pair in the JVMTI compiler inlining record table, the
>> jitdump plugin emits debug line table entries for every source line in
>> the method preceding t
On 05/27/20 13:03 PM, Ian Rogers wrote:
>
> Great result, thanks! I note there is a lack of symbolization when
> benchmarking a few Java applications. I'll try to see if there's a
> sensible resolution for those.
>
I noticed it loses information when the Hotspot code cache is
resized. I've been wo
On 05/28/20 02:08 AM, Ian Rogers wrote:
>>
>> I noticed it loses information when the Hotspot code cache is
>> resized. I've been working around that by setting
>> -XX:InitialCodeCacheSize and -XX:ReservedCodeCacheSize to large
>> values. Does this help in your case?
>
> Thanks, I tried and also wi
Fix an issue where addresses in the DWARF line table are offset by
-0x40 (GEN_ELF_TEXT_OFFSET). This can be seen with `objdump -S` on the
ELF files after perf inject.
Signed-off-by: Nick Gasson
---
tools/perf/util/genelf_debug.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff
to ~40MB.
Signed-off-by: Nick Gasson
---
Changes in v2:
- Split the unrelated DWARF debug fix into a separate patch
- Added a comment about the use of c->methods
tools/perf/jvmti/libjvmti.c | 78 -
1 file changed, 33 insertions(+), 45 deletions(-)
diff --
On 05/28/20 06:34 AM, Arnaldo Carvalho de Melo wrote:
>>
>> This is in my tmp.perf/core branch pending a round of testing, after
>> that it'll move to perf/core on its way to 5.8, thanks.
>
> All tests passed, moved to perf/core.
>
Great, thank you!
--
Nick
On 04/27/20 18:35 pm, Jiri Olsa wrote:
>
> adding Stephane to the loop
>
> jirka
>
>>
>> These three patches fix a couple of issues I ran into while using the
>> jitdump JVMTI agent to profile the SPECjbb benchmark.
>>
Hi, any feedback on these patches?
to ~40MB.
Also fix an error in the DWARF line table state machine where addresses
are incorrectly offset by -0x40 (GEN_ELF_TEXT_OFFSET). This can be seen
with `objdump -S` on the ELF files after perf inject.
Signed-off-by: Nick Gasson
---
tools/perf/jvmti/libjvmti.c| 73
On 05/15/20 06:41 am, Ian Rogers wrote:
>
> If you are looking at this code I believe there is a bug in that the
> loop handling jvmtiCompiledMethodLoadInlineRecord is writing out the
> entire line number table before a pc and not just the line number
> table at the pc. This loop in do_get_line_num
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