Commit Graph

197 Commits

Author SHA1 Message Date
Bartosz Taudul
c6bb08355c Allow specification of port through env variable. 2020-03-08 16:14:36 +01:00
Bartosz Taudul
26cee8acf0 Perform symbol information queries. 2020-02-26 22:35:15 +01:00
Bartosz Taudul
2b7f5091f1 Store sampling period. 2020-02-25 23:08:52 +01:00
Bartosz Taudul
02d200878d Process queue data in-place. 2020-02-23 15:18:24 +01:00
Bartosz Taudul
96034bca3e Force inline AppendData(), NeedDataSize(). 2020-02-23 14:44:19 +01:00
Bartosz Taudul
23fe3e623d 64-bit only version of callstack payload sender. 2020-02-22 14:05:01 +01:00
Bartosz Taudul
f186540c4f Fix callstack pointers in 32-bit builds. 2020-02-22 13:38:09 +01:00
Bartosz Taudul
aa94df0845 Replace rpmalloc_thread_initialize with InitRPMallocThread(). 2020-01-25 17:16:08 +01:00
Bartosz Taudul
ab2fbd6164 Move ParamaterSetup() implementation to header. 2020-01-25 16:51:17 +01:00
Bartosz Taudul
a90004b983 Move Set/GetThreadName() to Tracy API. 2020-01-25 16:36:58 +01:00
Bartosz Taudul
55d03cb03e Hide async queue setup/commit behind macros. 2020-01-19 15:06:11 +01:00
Bartosz Taudul
68ff33d0ba Extract source location allocation functionality. 2019-12-06 00:15:46 +01:00
Bartosz Taudul
59371eef5a Obtain CPU topology on windows. 2019-11-29 18:29:31 +01:00
Bartosz Taudul
4551553eb4 Implement setting client parameters from server. 2019-11-25 23:59:48 +01:00
Bartosz Taudul
8286b0b72f Plumbing for message call stacks. 2019-11-14 23:40:41 +01:00
Bartosz Taudul
0befc75f83 Fix conflicts with X.h. 2019-11-14 18:24:29 +01:00
Bartosz Taudul
6bbf273581 Partial header inclusion cleanup. 2019-11-05 20:09:40 +01:00
Bartosz Taudul
907574e637 Allow remote plot configuration. 2019-11-05 17:45:19 +01:00
Bartosz Taudul
0f2503d334 Send time deltas in GPU time events. 2019-10-25 19:52:01 +02:00
Bartosz Taudul
8fa5188176 Send delta times for context switches. 2019-10-25 19:13:11 +02:00
Bartosz Taudul
ba61a9ed84 Transfer time deltas, not absolute times.
This change significantly reduces network bandwidth requirements.

Implemented for:
- CPU zones,
- GPU zones,
- locks,
- plots,
- memory events.
2019-10-24 00:06:41 +02:00
Bartosz Taudul
cf88265304 Full 64-bit register is set by rdtsc. 2019-10-21 01:13:55 +02:00
Bartosz Taudul
c774534b47 Use rdtsc instead of rdtscp.
But rdtscp is serializing!

No, it's not. Quoting the Intel Instruction Set Reference:

"The RDTSCP instruction is not a serializing instruction, but it does
wait until all previous instructions have executed and all previous
loads are globally visible. But it does not wait for previous stores to
be globally visible, and subsequent instructions may begin execution
before the read operation is performed.",

"The RDTSC instruction is not a serializing instruction. It does not
necessarily wait until all previous instructions have been executed
before reading the counter. Similarly, subsequent instructions may begin
execution before the read operation is performed."

So, the difference is in waiting for prior instructions to finish
executing. Notice that even in the rdtscp case, execution of the
following instructions may commence before time measurement is finished
and data stores may be still pending.

But, you may say, Intel in its "How to Benchmark Code Execution Times"
document shows that using rdtscp is superior to rdstc. Well, not
exactly. What they do show is that when a *single function* is
considered, there are ways to measure its execution time with little to
no error.

This is not what Tracy is doing.

In our case there is no way to determine absolute "this is before" and
"this is after" points of a zone, as we probably already are inside
another zone.  Stopping the CPU execution, so that a deeply nested zone
may be measured with great precision, will skew the measurements of all
parent zones.

And this is not what we want to measure, anyway. We are not interested
in how a *single function* behaves, but how a *whole program* behaves.
The out-of-order CPU behavior may influence the measurements? Good! We
are interested in that. We want to see *how* the code is really
executed. How is *stopping* the CPU to make a timer read an appropriate
thing to do, when we want to see how a program is performing?

At least that's the theory.

And besides all that, the profiling overhead is now reduced.
2019-10-20 20:52:33 +02:00
Bartosz Taudul
30fc2f02ab Omit calculation of on-stack variable address. 2019-10-20 19:42:29 +02:00
Bartosz Taudul
7cf3608493 Avoid unused variables. 2019-10-05 02:11:45 +02:00
Bartosz Taudul
fe7f56b022 Implement retrieval of external process names. 2019-08-16 19:22:23 +02:00
Bartosz Taudul
69077e4e6f Finish sending context switches during disconnect. 2019-08-14 23:06:13 +02:00
Bartosz Taudul
c0b524d8de Add a separate method for clearing serial queue. 2019-08-14 22:39:12 +02:00
Bartosz Taudul
5fbb811f5d Degrade ARM timer to monotonic raw clock.
The monotonic raw clock has the same accuracy as reading cntvct registers, but
using clock_gettime() has a measurable impact on queueing time (135 us vs
83 us).

This change is needed to enable ftrace time readings on ARM linux, which
doesn't provide any way to get raw cntvct readings, like x86-tsc on x86.
2019-08-14 16:19:02 +02:00
Bartosz Taudul
602c38c6c0 Allow checking timer implementation. 2019-08-14 14:35:44 +02:00
Bartosz Taudul
fe0f1aea07 Add system tracing skeleton. 2019-08-12 23:05:34 +02:00
Bartosz Taudul
8aa0be39d5 Drop support for CPU id queries. 2019-08-12 23:05:34 +02:00
Bartosz Taudul
0431c03556 Add serial queue interface. 2019-08-12 13:27:15 +02:00
Bartosz Taudul
12969ee497 Track thread context.
This change exploits the fact that events are processed in batches
originating from a single thread. A single message changing thread
context is enough to handle multiple messages, as opposed to inclusion
of thread identifier in each message.
2019-08-02 20:18:08 +02:00
Bartosz Taudul
a4e7a341c0 Proper handling of disconnect request. 2019-08-01 23:14:09 +02:00
Bartosz Taudul
a6a3f45810 Fill in thread id during dequeue, not during enqueue. 2019-07-30 01:15:14 +02:00
Bartosz Taudul
89928fde7b Queue must be always able to alloc. 2019-07-29 22:13:16 +02:00
Bartosz Taudul
82a4a6d9cc Add tracy_ prefix to concurrentqueue.h file name. 2019-07-29 21:47:50 +02:00
Alex
0c5ea710b0 Merged in z33ky/tracy/const-frame-image (pull request #37)
Constify frame-image pointer in API.
2019-07-13 13:09:21 +00:00
Alexander 'z33ky' Hirsch
c6e8dc8d63 Constify frame-image pointer in API. 2019-07-13 12:33:55 +02:00
Bartosz Taudul
60d2384a6a Allow sending application information messages. 2019-07-12 18:34:46 +02:00
Bartosz Taudul
bb35f9a897 Compress frame images in a separate thread. 2019-06-27 13:24:35 +02:00
Bartosz Taudul
7ebd2162c6 Add ETC1 compression thread. 2019-06-26 22:57:24 +02:00
Bartosz Taudul
f565e11976 Store frame images in queue. 2019-06-26 22:52:24 +02:00
Bartosz Taudul
8ce41b3543 Proper init order of thread local thread handle. 2019-06-26 19:32:52 +02:00
Bartosz Taudul
06a41708a7 Move TLS accesses close together. 2019-06-24 19:38:44 +02:00
Bartosz Taudul
0b394c3f53 Don't need to keep last broadcast time in Profiler class. 2019-06-18 20:15:09 +02:00
Bartosz Taudul
e609c0fdce UDP broadcast loop. 2019-06-17 02:25:09 +02:00
Bartosz Taudul
37d1457b44 Frame image may need flipping. 2019-06-12 15:28:32 +02:00
Bartosz Taudul
04dd33f5c4 Fix mismatched linkage. 2019-06-11 23:51:12 +02:00