Hi, changing the subject, cause this i not related to HPET anymore.
On Sat, Jun 14, 2025 at 01:34:28AM +0000, Damien Zammit wrote: > How does it crash? Do you get a backtrace? No, it just hangs without any output. > What does it actually do during a crash? It runs the Postgres regression test suite, which runs quite a few processes in parallel and creates/tears down data directories, so I think it is pretty much a torture test. However, I run it via the build-farm client which does CI (https://wiki.postgresql.org/wiki/PostgreSQL_Buildfarm_Howto), which sets debug_paralle_query=on by default. If I run "make NO_LOCALE=1 check" manually or override the config to remove that, it does not usually crash it. I also noticed that the individual test runtimes are much larger[1] when running it via run_build.pl with debug_parallel_query=on than manually (of remoing that parameter). Load goes up to 6-7 with peaks over 10, memory is being used, but running 'free' in a loop does not show anything alarming. This was the output of uptime/free/df when it hang: | 11:13:41 up 12 min, 9 users, load average: 3.87, 5.62, 4.74 | total used free shared buff/cache available |Mem: 2041796 860072 1181724 0 0 1181724 |Swap: 975868 0 975868 |Filesystem 1K-blocks Used Available Use% Mounted on |/dev/hd0s2 4143104 3676732 259220 94% / > Can you try with a kdb enabled gnumach? I tried that, but I have to admit I don't have a lot of experience with it. The debugger is responsive, and if I step/continue it mostly runs through the idle thread. There were around 80 tasks, ext2fs has around 45 threads and pflocal sometimes has up to 50-70 threads. Except for a few in thread_bootstrap_return from postgres tasks, most of the postgres-related tasks are in either mach_msg_continue or mach_msg_receive_continue. Let me know what I should be looking out for. But I guess Michael [1] manually: |echo "# +++ regress check in src/test/regress +++" && PATH="/home/demo/postgres/tmp_install/home/demo/build-farm-19.1/buildroot/HEAD/inst/bin:/home/demo/postgres/src/test/regress:$PATH" LD_LIBRARY_PATH="/home/de |mo/postgres/tmp_install/home/demo/build-farm-19.1/buildroot/HEAD/inst/lib" INITDB_TEMPLATE='/home/demo/postgres'/tmp_install/initdb-template ../../../src/test/regress/pg_regress --temp-instance=./tmp_check --in |putdir=. --bindir= --no-locale --dlpath=. --max-concurrent-tests=20 --schedule=./parallel_schedule |# +++ regress check in src/test/regress +++ |# initializing database system by running initdb |# using temp instance on port 65312 with PID 3380 |ok 1 - test_setup 400 ms |# parallel group (20 tests): int2 pg_lsn boolean money oid txid int8 regproc float4 float8 char text name varchar enum int4 bit uuid numeric rangetypes |ok 2 + boolean 380 ms |ok 3 + char 610 ms |ok 4 + name 630 ms |ok 5 + varchar 640 ms |ok 6 + text 620 ms |ok 7 + int2 300 ms |ok 8 + int4 730 ms |ok 9 + int8 480 ms |ok 10 + oid 420 ms |ok 11 + float4 530 ms |ok 12 + float8 590 ms |ok 13 + bit 840 ms |ok 14 + numeric 1450 ms |ok 15 + txid 450 ms |ok 16 + uuid 960 ms |ok 17 + enum 710 ms |ok 18 + money 400 ms |ok 19 + rangetypes 1580 ms |ok 20 + pg_lsn 300 ms |ok 21 + regproc 480 ms run_build.pl: |echo "# +++ regress check in src/test/regress +++" && PATH="/home/demo/postgres/tmp_install/home/demo/build-farm-19.1/buildroot/HEAD/inst/bin:/home/demo/postgres/src/test/regress:$PATH" LD_LIBRARY_PATH="/home/de |mo/postgres/tmp_install/home/demo/build-farm-19.1/buildroot/HEAD/inst/lib" INITDB_TEMPLATE='/home/demo/postgres'/tmp_install/initdb-template ../../../src/test/regress/pg_regress --temp-instance=./tmp_check --in |putdir=. --bindir= --temp-config=/home/demo/build-farm-19.1/buildroot/tmp/buildfarm-heJzFo/bfextra.conf --no-locale --port=5678 --dlpath=. --max-concurrent-tests=20 --port=5678 --schedule=./parallel_schedule |# +++ regress check in src/test/regress +++ |# initializing database system by running initdb |# using temp instance on port 5678 with PID 10923 |ok 1 - test_setup 440 ms |# parallel group (20 tests): txid pg_lsn char int4 varchar oid name regproc boolean enum uuid float4 float8 money int2 bit int8 text rangetypes numeric |ok 2 + boolean 9090 ms |ok 3 + char 1380 ms |ok 4 + name 2530 ms |ok 5 + varchar 1500 ms |ok 6 + text 14600 ms |ok 7 + int2 13850 ms |ok 8 + int4 1460 ms |ok 9 + int8 14160 ms |ok 10 + oid 2460 ms |ok 11 + float4 12490 ms |ok 12 + float8 12690 ms |ok 13 + bit 13950 ms |ok 14 + numeric 18530 ms |ok 15 + txid 1030 ms |ok 16 + uuid 10360 ms |ok 17 + enum 9170 ms |ok 18 + money 13500 ms |ok 19 + rangetypes 16410 ms |ok 20 + pg_lsn 1320 ms |ok 21 + regproc 9080 ms
