wangbo opened a new pull request, #37289:
URL: https://github.com/apache/doris/pull/37289
## Proposed changes
Log doris_be process's thread num at a fixed interval, when a BE cores
because of thread exhaustion, we can use this log to find which logic uses the
most threads.
```
log be thread num: pid=3545627 thread_name_count=106 total_thread_num=7103
details: RScan_auth_grou=960
RScan_normal [w=960
RScan_test_wg [=960
RemoteScanThrea=960
brpc_heavy=384
brpc_light=384
doris_be=294
Scan_normal [wo=192
Scan_auth_group=192
LimitedScanThre=192
Scan_test_wg [w=192
SpillIOThreadPo=192
local_scan=192
Pipe_test_wg [w=96
Pipe_normal [wo=96
Pipe_auth_group=96
PipeNoGSchePool=96
DownloadThreadP=64
SendReportThrea=64
SendBatchThread=64
FragmentMgrThre=64
JoinNodeThreadP=64
EvHttpServer [w=48
FragmentInstanc=48
TabletPublishTx=32
S3FileUploadThr=16
BufferedReaderP=16
NonBlockCloseTh=12
MultiGetTaskThr=10
TaskWP_PUBLISH_=8
SendTableStatsT=8
MemTableHighPri=6
MemTableFlushTh=6
wg_flush_test_w=6
wg_flush_auth_g=6
SegmentFileWrit=6
wg_flush_normal=6
WriteCooldownMe=5
TaskWP_MAKE_SNA=5
CooldownTaskThr=5
SegCompactionTa=5
TaskWP_RELEASE_=5
BaseCompactionT=4
cancel_timeout_=3
TaskWP_DELETE [=3
TaskWP_DROP_TAB=3
TaskWP_CREATE_T=3
TaskWP_CLONE [w=3
TaskWP_ALTER_TA=3
TaskWP_ALTER_IN=3
TaskWP_.PUSH [w=3
HighPriorPool.P=3
ColdDataCompact=2
memtable_memory=1
query_runtime_s=1
memory_maintena=1
memory_gc_threa=1
GroupCommitThre=1
je_purge_dirty_=1
gc_expired_cont=1
garbage_sweeper=1
evict_querying_=1
disk_stat_monit=1
cooldown_tasks_=1
compaction_task=1
cold_data_compa=1
path_gc_thread-=1
ping_worker-354=1
clean_expired_t=1
remove_unused_r=1
replay_wal-3547=1
spill_gc_thread=1
tablet_checkpoi=1
unused_rowset_m=1
update_wal_dir_=1
GroupCommitRepl=1
CumuCompactionT=1
wg_mem_refresh_=1
workload_schedu=1
TaskWP_UPDATE_T=1
TaskWP_CLEAN_UD=1
TaskWP_CLEAR_TR=1
TaskWP_CHECK_CO=1
TaskWP_DOWNLOAD=1
TaskWP_GC_BINLO=1
TabletCalcDelet=1
TaskWP_MOVE [wo=1
SingleReplicaCo=1
TaskWP_PUSH_COO=1
TaskWP_PUSH_STO=1
REPORT_TASK-354=1
TaskWP_STORAGE_=1
TaskWP_SUBMIT_T=1
clean_idle_cons=1
TaskWP_UPDATE_V=1
TaskWP_UPLOAD [=1
REPORT_OLAP_TAB=1
_update_replica=1
async_publish_v=1
be_proc_monitor=1
REPORT_DISK_STA=1
MigrationTaskTh=1
cache_clean_thr=1
calculate_metri=1
LazyReleaseMemo=1
TaskWP_CLEAN_TR=1
```
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