# Jabref 5.1 freezes frequently in Catalina 10.15

**URL:** <https://discourse.jabref.org/t/jabref-5-1-freezes-frequently-in-catalina-10-15/2317>\
**Category:** Help\
**Created:** [September 24, 2020, 11:14am UTC](https://discourse.jabref.org/t/jabref-5-1-freezes-frequently-in-catalina-10-15/2317 "2020-09-24T11:14:19Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![shanki](https://avatars.discourse-cdn.com/v4/letter/s/a183cd/32.png) [@shanki](https://discourse.jabref.org/u/shanki)\
**Post date:** [September 24, 2020, 11:14am UTC](https://discourse.jabref.org/t/jabref-5-1-freezes-frequently-in-catalina-10-15/2317/1 "2020-09-24T11:14:19Z")

</div>

In the last month or so, I found that Jabref 5.1 freezes more frequently in Catalina 10.15. I have updated my computer to the latest version. Is there a reason for this?  
Here is the report from the latest incident today:

Date/Time: 2020-09-24 13:37:27 +0530  
End time: 2020-09-24 13:40:09 +0530  
OS Version: Mac OS X 10.15.6 (Build 19G2021)  
Architecture: x86\_64h  
Report Version: 29  
Incident Identifier: 1C2FD0C2-462D-4412-BA0C-E654BD377B39

Data Source: Microstackshots  
Shared Cache: 0x5403000 E1A25A3A-AB86-304C-B1F9-1A04170530F4

Command: JabRef  
Path: /Applications/JabRef.app/Contents/MacOS/JabRef  
Identifier: org.jabref  
Version: 5.1.60000 (5.1.60000)  
PID: 38489

Event: cpu usage  
Action taken: none  
CPU: 90 seconds cpu time over 162 seconds (56% cpu average), exceeding limit of 50% cpu over 180 seconds  
CPU limit: 90s  
Limit duration: 180s  
CPU used: 90s  
CPU duration: 162s  
Duration: 162.08s  
Duration Sampled: 158.93s  
Steps: 289

Hardware model: MacBookPro16,1  
Active cpus: 12  
Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev

Heaviest stack for the target process:  
62 ??? [0xe02f36fd000387b0]  
34 ??? [0x11c539e6d]

Powerstats for: JabRef [38489]  
UUID: A1ADBDA7-5D4D-372C-ABF5-2E075FD10169  
Path: /Applications/JabRef.app/Contents/MacOS/JabRef  
Architecture: x86\_64  
Footprint: 425.62 MB -\> 1533.04 MB (+1107.42 MB)  
Pageins: 123 pages  
Start time: 2020-09-24 13:37:30 +0530  
End time: 2020-09-24 13:40:09 +0530  
Num samples: 289 (100%)  
CPU Time: 1017.291s  
Primary state: 118 samples Frontmost App, Non-Suppressed, User mode, Effective Thread QoS Default, Requested Thread QoS Default, Override Thread QoS Unspecified  
User Activity: 0 samples Idle, 289 samples Active  
Power Source: 289 samples on Battery, 0 samples on AC  
62 ??? [0xe02f36fd000387b0]  
34 ??? [0x11c539e6d]  
14   
11 \<Non-Frontmost App, Suppressed\>  
10 ??? [0x11c539eca]  
3   
2 \<Non-Frontmost App, Suppressed\>  
10 ??? [0x11c539eb7]  
3   
1 \<Non-Frontmost App, Suppressed\>  
6 ??? [0x11c813323]  
4   
2 ??? [0x11c81338a]  
1   
1 \<Non-Frontmost App, Suppressed\>  
50 ??? [0xe02c57aa000387b0]  
30 ??? [0x11c539e6d]  
12   
7 \<Non-Frontmost App, Suppressed\>  
8 ??? [0x11c813323]  
4 \<Non-Frontmost App, Suppressed\>  
3   
7 ??? [0x11c539eca]  
2 \<Non-Frontmost App, Suppressed\>  
1   
3 ??? [0x11c539eb7]  
2   
1 ??? [0x11c81338a]  
1   
1 ??? [0x11c539ec2]  
1   
30 ??? [0xe026e906000387b0]  
21 ??? [0x11c539e6d]  
5   
4 \<Non-Frontmost App, Suppressed\>  
5 ??? [0x11c539eca]  
2   
4 ??? [0x11c539eb7]  
2 \<Non-Frontmost App, Suppressed\>  
26 ??? [0xe02e3b49000387b0]  
20 ??? [0x11c539e6d]  
7 \<Non-Frontmost App, Suppressed\>  
6   
5 ??? [0x11c539eb7]  
3   
1 ??? [0x11c539eca]  
1   
23 ??? [0x11c528e95]  
9   
4 \<Non-Frontmost App, Suppressed\>  
19 ??? [0x11c528e7c]  
7   
6 \<Non-Frontmost App, Suppressed\>  
17 ??? [0x11c528e9c]  
5   
4 \<Non-Frontmost App, Suppressed\>