Date: Fri, 22 Jan 2021 16:52:48 +0700 From: Eugene Grosbein <eugen@grosbein.net> To: Victor Gamov <vit@otcnet.ru>, freebsd-net@freebsd.org Subject: Re: 'dropped due to full socket buffers' by SNMP Message-ID: <706bf341-01dd-f9f9-a5a8-afb8c34d5572@grosbein.net> In-Reply-To: <427b5ef6-9558-22ad-6088-c852bf234d13@otcnet.ru> References: <388da9a7-7b89-89b2-54eb-17d0e818c924@otcnet.ru> <4e41c1d2-19bc-0345-0b03-526e4cb785c7@otcnet.ru> <b279e676-c789-2978-98a0-b8a4b164a111@grosbein.net> <a69d872a-f21e-de66-7677-58beccb0f023@otcnet.ru> <6c780827-e764-8053-356b-a921e0892c15@grosbein.net> <fef04bda-6aa0-4a80-8999-867b9f37d766@otcnet.ru> <7e51a6be-aea1-51c6-c0bd-10d00c19d5d3@grosbein.net> <888c8e91-c8f2-ad4b-9fcf-64c09432f2d5@otcnet.ru> <427b5ef6-9558-22ad-6088-c852bf234d13@otcnet.ru>
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22.01.2021 16:27, Victor Gamov wrote: > I increase kern.ipc.maxsockbuf from 2097152 -> 2597152 -> 3145728 but > netstat -sn -p udp | grep 'dropped due to full socket buffers' still show dropped packets. > > Then I increase net.inet.udp.recvspace 84160 -> 105200 but 'dropped due to full socket buffers' packets still here. > > Do I need to try to increase something else? Increase of various buffers may help against very short traffic bursts or limited time interface congestion. It won't help in case you have permanent (or nearly permanent) link overload.
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