[pve-devel] [PATCH qemu-server 1/1] fix #4507 : increase qemu max openfiles limit

DERUMIER, Alexandre alexandre.derumier at groupe-cyllene.com
Tue Dec 12 12:10:46 CET 2023


>>From a quick look, I didn't find an option to pass along QEMU for
>>so it would likely need to be implemented first/discussed with
>>But thinking about it a bit, it feels wrong for each application to
>>responsible for raising the limit itself. Sure the application needs
>>avoid using select(), but IMHO such limits are better set from the
>>I think your approach is fine, can you please send a v2 with a
>>Signed-off-by and my nits addressed?

yes, sure ! I'll send a patch this afternoon.

>>I mean, ideally select() would just change to allow getting rid of
>>low default limit, but the man page says it won't, so ¯\_(ツ)_/¯:

Yes, I was thinking the same ^_^

>        WARNING:  select()  can  monitor only file descriptors numbers
> that are less than FD_SETSIZE (1024)—an unreasonably low limit for
>        many modern applications—and this limitation will not change. 
> All modern applications should instead use  poll(2)  or  epoll(7),
>        which do not suffer this limitation.

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