I want to add this parameter "--o:per_document.max_concurrency=2" in the Yaml file How do I do that?

[MarcelH]

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I finally got nextcloud installed on my synology NAS and it works for 99%. One thing bugs me tough. My NAS has a processor with only two cores and when I open a document I get a reminder that I need to change my processor count.

I am just a user and not a software engineer and none of the instructions helped me to solve this problem. I know what I have to do, but not how to do it.

The instructions I read are also very unsafe. I think things like processor concurrency should be set at installation and be determand in this procedure. If this can’t be done you should be able to set it in the yaml file.

Has anyone an idea how to do this?

[jtr]

It would be helpful if you provided more context. Nextcloud is a large system. There is a support template for a reason.

[MarcelH]

Dear Josh,

Thanks for your reaction. I delibrately did not fill in the form because in my expirience too much information distracts from the issue at hand.

But hereby some extra information:

I installed the latest version of nextcloud-aio (30.0.8.1) on a DS218+ synology NAS in a docker container. The NAS has 8Gb of memory.

This is the cpu info:

Taak: cpu info
Starttijd: Sat, 13 Sep 2025 13:21:44 +0200
Stoptijd: Sat, 13 Sep 2025 13:21:44 +0200
Huidige status: 0 (Normaal)
Standaard output/fout:

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 92
model name	: Intel(R) Celeron(R) CPU J3355 @ 2.00GHz
stepping	: 9
microcode	: 0x3c
cpu MHz		: 2001.000
cache size	: 1024 KB
physical id	: 0
siblings	: 2
core id		: 0
cpu cores	: 2
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 21
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 ds_cpl vmx est tm2 ssse3 sdbg cx16 xtpr pdcm sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave rdrand lahf_lm 3dnowprefetch intel_pt ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust smep erms mpx rdseed smap clflushopt sha_ni xsaveopt xsavec xgetbv1 dtherm ida arat pln pts md_clear arch_capabilities
bugs		: spectre_v1 spectre_v2
bogomips	: 3993.43
clflush size	: 64
cache_alignment	: 64
address sizes	: 39 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 92
model name	: Intel(R) Celeron(R) CPU J3355 @ 2.00GHz
stepping	: 9
microcode	: 0x3c
cpu MHz		: 2001.000
cache size	: 1024 KB
physical id	: 0
siblings	: 2
core id		: 2
cpu cores	: 2
apicid		: 4
initial apicid	: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 21
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 ds_cpl vmx est tm2 ssse3 sdbg cx16 xtpr pdcm sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave rdrand lahf_lm 3dnowprefetch intel_pt ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust smep erms mpx rdseed smap clflushopt sha_ni xsaveopt xsavec xgetbv1 dtherm ida arat pln pts md_clear arch_capabilities
bugs		: spectre_v1 spectre_v2
bogomips	: 3993.43
clflush size	: 64
cache_alignment	: 64
address sizes	: 39 bits physical, 48 bits virtual
power management:

The warning I get is this:

The default processor count of nextcloud aio is 4. My machine has 2. So I would like to change that. I already found out I have te change a file coolwsd.xml, but that is at best a workaround and no solution. (apart from the fact that I can´t find the file and don´t know how to change it)

My question is: Is there a command I can enter in the yaml file where is can set this parameter. Something like the parameter “COLLABORA_SECCOMP_DISABLED: true” I had to add to get my collabora to function.

Here you can find my compose.yaml: Access via Synology

Kind regards

Marcel Reijnen

[jtr]

You should be able to specify any Collabora -o options under Additional Collabora options in the Optional.Containers AIO config area.