Date: Tue, 12 Feb 2019 14:41:13 -0500 From: Mike Tancsa <mike@sentex.net> To: Eugene Grosbein <eugen@grosbein.net> Cc: FreeBSD stable <freebsd-stable@freebsd.org> Subject: Re: 11.2-STABLE kernel wired memory leak Message-ID: <d450a2d3-97e0-b70a-2199-73eb480945b5@sentex.net> In-Reply-To: <bfbcaaba-0da3-ac6f-9543-1b717acd8a89@grosbein.net> References: <d8c7abc0-3ba1-40e4-22b1-1b30d28ced14@grosbein.net> <20190212163446.GA29847@raichu> <4ab1331f-80e3-b856-b402-9985e73618bc@grosbein.net> <672edbe6-ac42-f21e-ad8a-7a5f5d4c4e3c@sentex.net> <bfbcaaba-0da3-ac6f-9543-1b717acd8a89@grosbein.net>
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On 2/12/2019 2:38 PM, Eugene Grosbein wrote: > > mbuf* numbers represent memory being wasted IMHO. > > In contrast to ZFS memory that can contain useful cached data, > contents of freed mbufs cannot be re-used, right? > > Some amount of "free" mbufs in the zone's just fine to serve bursts of traffic > without need to grow the zone but your numbers are way too big IMHO. > > Do you have memory pressure here? Growth of swap usage? > I had to radically cut ARC down, otherwise the box would start swapping all sorts of processes out % sysctl -a vfs.zfs.arc_max vfs.zfs.arc_max: 12307744768 ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 x203 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada
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