Bug 849857

Summary:	net-p2p/kubo-0.12.2: failed to sufficiently increase receive buffer size
Product:	Gentoo Linux	Reporter:	Tim Mohlmann <muhlemmer>
Component:	Current packages	Assignee:	David Roman <davidroman96>
Status:	RESOLVED OBSOLETE
Severity:	minor	CC:	hurikhan77+bgo, proxy-maint
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://wiki.gentoo.org/wiki/Ipfs#receive_buffer_size
Whiteboard:
Package list:		Runtime testing required:	---

Description Tim Mohlmann 2022-06-05 16:26:08 UTC

When starting the IPFS service daemon, it fails to sufficiently increase receive buffer size.


Reproducible: Always

Steps to Reproduce:
1. emerge net-p2p/go-ipfs
2. su -s /bin/sh -c "ipfs init -e" ipfs
3. systemctl enable --now ipfs.service
4. journalctl -u ipfs.service
Actual Results:  
Error in logs:

failed to sufficiently increase receive buffer size (was: 208 kiB, wanted: 2048 kiB, got: 416 kiB). See https://github.com/lucas-clemente/quic-go/wiki/UDP-Receive-Buffer-Size for details.

Expected Results:  
ipfs-go daemon to be able to increase the receive buffer size and not print above log message.

https://github.com/lucas-clemente/quic-go/wiki/UDP-Receive-Buffer-Size

Workaround:

sysctl -w 'net.core.rmem_max=2500000'
echo "net.core.rmem_max=2500000" > /etc/sysctl.d/40-ipfs.conf

This can probably be fixed for all users by packing the `/etc/sysctl.d/40-ipfs.conf` file with `net.core.rmem_max=2500000` contents. If that is not desirable, instructions can be printed during emerge.

Comment 1 David Roman 2022-06-14 19:38:14 UTC

Just a note. In go-ipfs-0.13.0 setting Swarm.ResourceMgr.Enabled to true avoids this problem. This setting will be enabled by default in the future