getmango
[Bug Report] GC warning
I am running on a raspberry pi (I believe 3), and have this issue. I left it overnight and it seems to raised some sort a segfault by the next morning:
Is there something I should configure or any logs I can can provide?
I tried v0.20.1 on an ARM64 VPS but couldn't reproduce the issue. Since RPi uses ARM32, it might be an ARM32-specific bug. I will dig out my RPi and see if I can reproduce the issue there.
Is there something I should configure or any logs I can provide?
The GC warning seems to suggest that there's a memory leak. Can you monitor the memory usage and see if it's growing?
Before launch:
pi@raspberrypi:~ $ free -h
total used free shared buff/cache available
Mem: 924Mi 74Mi 83Mi 8.0Mi 766Mi 781Mi
Swap: 99Mi 56Mi 43Mi
Right on startup:
pi@raspberrypi:~ $ free -h
total used free shared buff/cache available
Mem: 924Mi 95Mi 74Mi 8.0Mi 753Mi 760Mi
Swap: 99Mi 56Mi 43Mi
A while it is doing thumbnail generation:
pi@raspberrypi:~ $ free -h
total used free shared buff/cache available
Mem: 924Mi 161Mi 40Mi 8.0Mi 722Mi 697Mi
Swap: 99Mi 56Mi 43Mi
pi@raspberrypi:~ $ free -h
total used free shared buff/cache available
Mem: 924Mi 165Mi 35Mi 7.0Mi 723Mi 694Mi
Swap: 99Mi 57Mi 42Mi
pi@raspberrypi:~ $ free -h
total used free shared buff/cache available
Mem: 924Mi 196Mi 24Mi 7.0Mi 703Mi 664Mi
Swap: 99Mi 58Mi 41Mi
After thumbnail generation completes:
pi@raspberrypi:~ $ free -h
total used free shared buff/cache available
Mem: 924Mi 198Mi 24Mi 6.0Mi 701Mi 663Mi
Swap: 99Mi 59Mi 40Mi
Full console log:
pi@raspberrypi:~/Mango $ docker-compose up
Starting mango ... done
Attaching to mango
mango |
mango |
mango | _| _|
mango | _|_| _|_| _|_|_| _|_|_| _|_|_| _|_|
mango | _| _| _| _| _| _| _| _| _| _| _|
mango | _| _| _| _| _| _| _| _| _| _|
mango | _| _| _|_|_| _| _| _|_|_| _|_|
mango | _|
mango | _|_|
mango |
mango |
mango | Mango - Manga Server and Web Reader. Version 0.20.1
mango |
mango | [INFO] 2021/03/03 02:23:58 | Scanned 8 titles in 755.430255ms
mango | [INFO] 2021/03/03 02:24:57 | Starting thumbnail generation
mango | GC Warning: Repeated allocation of very large block (appr. size 3166208):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 2543616):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 634880):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 704512):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 237568):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 704512):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 204800):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 204800):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 704512):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 634880):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 724992):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 180224):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 278528):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 188416):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 188416):
mango | May lead to memory leak and poor performance.
mango | GC Warning: Repeated allocation of very large block (appr. size 217088):
mango | May lead to memory leak and poor performance.
mango | [INFO] 2021/03/03 02:28:56 | Thumbnail generation finished
mango | [INFO] 2021/03/03 02:28:59 | Scanned 8 titles in 771.768038ms
Thanks for the additional info. I've finally tested it on my RPi but still not seeing the warning :(
It would be great if you could let me know
- The size of your library (
du -sh /path/to/your/mango/library) - When would the warning appear? Does it only happen during the thumbnail generation?
Thanks!
pi@raspberrypi:~$ du -sh Library/
8.0G Library/
It seems to happen when I load a chapter in the web reader, but I also saw it right at startup. Maybe this is due to serving the images from disk possibly? It seems to be most consistent, when I open a chapter in the reader and scroll through.
Thanks! I've finally reproduced it by scrolling through an entry. I will investigate and see what I can do.