Date: Tue, 12 Feb 2019 14:18:37 -0500 From: Mike Tancsa <mike@sentex.net> To: Eugene Grosbein <eugen@grosbein.net>, Mark Johnston <markj@freebsd.org> Cc: kib@freebsd.org, FreeBSD stable <freebsd-stable@freebsd.org> Subject: Re: 11.2-STABLE kernel wired memory leak Message-ID: <672edbe6-ac42-f21e-ad8a-7a5f5d4c4e3c@sentex.net> In-Reply-To: <4ab1331f-80e3-b856-b402-9985e73618bc@grosbein.net> References: <d8c7abc0-3ba1-40e4-22b1-1b30d28ced14@grosbein.net> <20190212163446.GA29847@raichu> <4ab1331f-80e3-b856-b402-9985e73618bc@grosbein.net>
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On 2/12/2019 1:03 PM, Eugene Grosbein wrote:
> It seems page daemon is broken somehow as it did not reclaim several
> gigs of wired memory
> despite of long period of vm thrashing:
>
> $ sed 's/:/,/' vmstat-z.txt | awk -F, '{printf "%10s %s\n", $2*$5/1024/1024, $1}' | sort -k1,1 -rn | head
> 1892 abd_chunk
> 454.629 dnode_t
> 351.35 zio_buf_512
> 228.391 zio_buf_16384
> 173.968 dmu_buf_impl_t
> 130.25 zio_data_buf_131072
> 93.6887 VNODE
> 81.6978 arc_buf_hdr_t_full
> 74.9368 256
> 57.4102 4096
On an nfs server, serving a few large files, my 32G box is showing
vmstat -z | sed 's/:/,/' | awk -F, '{printf "%10s %s\n",
$2*$5/1024/1024, $1}' | sort -k1,1 -rn | head
11014.3 abd_chunk
2090.5 zio_data_buf_131072
1142.67 mbuf_jumbo_page
1134.25 zio_buf_131072
355.28 mbuf_jumbo_9k
233.42 zio_cache
163.099 arc_buf_hdr_t_full
130.738 128
97.2812 zio_buf_16384
96.5099 UMA Slabs
CPU: 0.0% user, 0.0% nice, 0.0% system, 0.0% interrupt, 100% idle
Mem: 1348K Active, 98M Inact, 3316K Laundry, 30G Wired, 1022M Free
ARC: 11G Total, 7025M MFU, 3580M MRU, 11M Anon, 78M Header, 681M Other
9328M Compressed, 28G Uncompressed, 3.05:1 Ratio
Swap: 64G Total, 13M Used, 64G Free
Right now its OK, but prior to limiting ARC, I had an issue with memory
and the disk thrashing due to swapping
pid 643 (devd), uid 0, was killed: out of swap space
---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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