so i wasnt able to access my unraid i couldnt ssh in.. and took a while

when i was able to and went to system logs i see a bunch of

php-fpm[10604]: [WARNING] [pool www] child 3703928 exited on signal 9 (SIGKILL)

what is it and do the diags show what caused it etc

and how can i prevent it

tardis-diagnostics-20250807-1920.zip

In my experience, these errors can be the result of the server being close to exhausting the memory, GUI can become extremely slow, like 1 minute to open the dashboard, try limiting the memory for VMs/docker services, or adding a little more RAM.

It could also be one or more containers hogging the CPU, try pinning only some cores to them, and leave cores 0/1 available for Unraid.

Also, recommend trying a couple of other things, go to Settings - Global share settings and set the Number of fuse File Descriptors to the max, and enable this:

https://docs.unraid.net/unraid-os/release-notes/7.0.0/#excessive-flash-drive-activity-slows-the-system-down

@JorgeB so there isnt a way to exactly know for sure then like not possible to truly narrow it down its a hit and miss kinda thing

so ill try that the pinning i havent used pinning just for the vms but i dont use the settings/ cpu pinning thats just at default all un checked

as for the number of fuse its set at 40960 so i should set it to 6572290 and what does that actually do?

and the flash drive activity shows

4,070,260 reads 455 writes in 1 day 14 hours 49 min up time

16 minutes ago, comet424 said:

as for the number of fuse its set at 40960 so i should set it to 6572290 and what does that actually do?

The help has a good description:

16 minutes ago, comet424 said:

and the flash drive activity shows

Worth a try enabling that option, but those reads can also be normal.

i had to google what a fuse file descriiptor is

or what it does.. the little description doesnt tell anything on how it works what it does to the array. what you physically see what do you see in cpu usage etc. if it will stop lock up

i googleed it told me

A file descriptor is a unique identifier or reference that the operating system assigns to a file when it is opened. It allows programs to interact with files, sockets, or other input/output (I/O) resources.

but still doesnt help me understand what that does but i set it to 6572290

so fingers crossed and ill adjust the cpu pinning stuff and look into adding 128 gig ram from 64 ecc

2 hours ago, comet424 said:

what a fuse file descriiptor is

The ‘fuse’ system is what Unraid uses to manage User Shares. That message is therefore suggesting increasing the number of files that can be opened at the User Share level.

@itimpi ok but i never have that many files open at once... maybe 1 to 10 files open at once ...

so far the issue hasnt come back

so hopefully things fix it self but i did do a reboot too

i had a question about the cpu pinning.. ive always done from years ago i skipped the first core for unraid and then started on the 2nd core for vms etc.. i just checked out the cpu pinning page as i havent been there in years

now you can cpu pin dockers and cpu isiolation

but with the cpu isolation i tried to google but there isnt much information

for cpu isolation do you check the first core and reboot and thats dedicated to the OS.. or you hightlight all the cores after the first core..

when i google i read kind if you isolate that cpu no vms or the unraid server can use that cpu.. so how should i do it then or you dont touch cpu isiolation is that for when a cpu is broken?