Here is the report from console :Date/Time: 2019-12-15 14:07:11.336638 -0800
OS Version: Mac OS X 10.12.6 (Build 16G2136)
Architecture: x86_64
Report Version: 19
Command: Transmission
Path: /Applications/Transmission.app/Contents/MacOS/Transmission
Version: 2.94 (14714.2.94)
Parent: launchd [1]
PID: 71079
Event: wakeups
Wakeups: 45002 wakeups over the last 264 seconds (170 wakeups per second average), exceeding limit of 150 wakeups per second over 300 seconds
Duration: 264.38s
Steps: 19
Hardware model: iMac12,2
Active cpus: 4
Fan speed: 1148 rpm
Powerstats for: Transmission [71079]
UUID: A18D8AA1-7A36-3C81-B13B-C45C1B8F0AE8
Start time: 2019-12-15 14:07:14 -0800
End time: 2019-12-15 14:11:31 -0800
Thank you for your help! marguerite
Microstackshots: 19 samples (100%)
Primary state: 12 samples Non-Frontmost App, Non-Suppressed, User mode, Effective Thread QoS Default, Requested Thread QoS Default, Override Thread QoS Unspecified
User Activity: 3 samples Idle, 16 samples Active
Power Source: 0 samples on Battery, 19 samples on AC
19 ??? (libsystem_pthread.dylib + 12429) [0x7fff94f8508d]
19 ??? (libsystem_pthread.dylib + 14471) [0x7fff94f85887]
19 ??? (libsystem_pthread.dylib + 14651) [0x7fff94f8593b]
19 ??? (Transmission + 435508) [0x10269c534]
15 ??? (Transmission + 544779) [0x1026b700b]
15 curl_multi_perform + 92 (libcurl.4.dylib) [0x7fff93d150a3]
9 multi_runsingle + 3391 (libcurl.4.dylib) [0x7fff93d15e5b]
9 Curl_resolver_is_resolved + 350 (libcurl.4.dylib) [0x7fff93d2551c]
9 Curl_expire + 207 (libcurl.4.dylib) [0x7fff93d14015]
4 multi_addtimeout + 94 (libcurl.4.dylib) [0x7fff93d17152]
2 multi_addtimeout + 114 (libcurl.4.dylib) [0x7fff93d17166]
2 multi_addtimeout + 140 (libcurl.4.dylib) [0x7fff93d17180]
2 Curl_llist_insert_next + 33 (libcurl.4.dylib) [0x7fff93d1352a]
2 ??? (libsystem_malloc.dylib + 8879) [0x7fff94eee2af]
1 curlx_tvnow + 32 (libcurl.4.dylib) [0x7fff93cea816]
2 Curl_timeleft + 1 (libcurl.4.dylib) [0x7fff93d11c41]
2 multi_runsingle + 3323 (libcurl.4.dylib) [0x7fff93d15e17]
2 Curl_fetch_addr + 62 (libcurl.4.dylib) [0x7fff93ceae21]
2 fetch_addr + 28 (libcurl.4.dylib) [0x7fff93ceae69]
2 create_hostcache_id + 31 (libcurl.4.dylib) [0x7fff93ceb012]
2 curl_maprintf + 115 (libcurl.4.dylib) [0x7fff93d08c74]
2 <Kernel mode>
1 multi_runsingle + 1754 (libcurl.4.dylib) [0x7fff93d157f6]
1 Curl_readwrite + 129 (libcurl.4.dylib) [0x7fff93d0c077]
1 ??? (libsystem_kernel.dylib + 106166) [0x7fff94e9aeb6]
1 <Kernel mode>
1 multi_runsingle + 512 (libcurl.4.dylib) [0x7fff93d1531c]
3 ??? (Transmission + 468734) [0x1026a46fe]
2 ??? (Transmission + 663759) [0x1026d40cf]
2 ??? (libsystem_kernel.dylib + 111006) [0x7fff94e9c19e]
2 <Suppressed, Kernel mode>
1 ??? (Transmission + 662577) [0x1026d3c31]
1 ??? (Transmission + 412428) [0x102696b0c]
1 <Suppressed>
1 ??? (libsystem_kernel.dylib + 106166) [0x7fff94e9aeb6]
1 <Kernel mode>
Binary Images:
0x102632000 - ??? org.m0k.transmission 2.94 (14714.2.94) <A18D8AA1-7A36-3C81-B13B-C45C1B8F0AE8> /Applications/Transmission.app/Contents/MacOS/Transmission
0x7fff93ce9000 - 0x7fff93d3bfff libcurl.4.dylib (95.70.5) <ED932C5D-6FA2-364A-B562-3F67D1B40C71> /usr/lib/libcurl.4.dylib
0x7fff94e81000 - 0x7fff94ea3fff libsystem_kernel.dylib <932ACBB6-9962-3839-AEE3-D8AA6BF1DD02> /usr/lib/system/libsystem_kernel.dylib
0x7fff94eec000 - 0x7fff94f0afff libsystem_malloc.dylib <82647590-DAEF-3499-8BF3-F1E3048861FE> /usr/lib/system/libsystem_malloc.dylib
0x7fff94f82000 - 0x7fff94f8cfff libsystem_pthread.dylib <B8FB5E20-3295-39E2-B5EB-B464D1D4B104> /usr/lib/system/libsystem_pthread.dylib