ZFS Filesystem Post: 302952867

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Operating Systems Solaris ZFS Filesystem Post 302952867 by tharmendran on Sunday 23rd of August 2015 11:40:54 PM

08-24-2015

Registered User

ZFS Filesystem

Hi,
Recently we have new server T5 Oracle. We set up it for our database. For out database files we set one zfs filesystem. When i use iostat -xc the output as below. As you see the value for vdc4 is quite high.

Code:

                 extended device statistics                      cpu
device    r/s    w/s   kr/s   kw/s wait actv  svc_t  %w  %b  us sy wt id
vdc0      0.6    3.9   10.8   37.5  0.0  0.0    1.9   0   0  10  7  0 83
vdc1     12.9    2.6 1644.2  309.9  0.0  0.1    7.6   0   1
vdc2      9.5    2.8 1208.8  351.9  0.0  0.1    8.4   0   1
vdc3      0.2    2.4   11.9   38.1  0.0  0.0    1.9   0   0
vdc4    266.6   83.1 32967.7 7561.5  0.0  3.2    9.1   0  65
vdc5      2.4    3.3  301.1  378.2  0.0  0.1   12.6   0   1
vdc6      5.8   52.1  715.3  718.0  0.0  0.1    2.4   0   6
vdc7      3.9   52.1  474.5  717.9  0.0  0.1    2.1   0   6
vdc8      0.0    0.0    0.0    0.0  0.0  0.0    2.3   0   0
nfs1      0.0    0.0    0.0    0.0  0.0  0.0    0.0   0   0

When i look on the output for memstat. The ZFS filesystem taking high mem percentange.

Code:

> ::memstat
Page Summary                Pages                MB  %Tot
------------     ----------------  ----------------  ----
Kernel                     355350              2776    8%
ZFS File Data             1660358             12971   40%
Anon                      1874388             14643   45%
Exec and libs               12338                96    0%
Page cache                 176508              1378    4%
Free (cachelist)             6483                50    0%
Free (freelist)            108879               850    3%
Total                    4194304             32768

Is this normal? When we database full backup the db will hang although the server load is normal during backup. Is that maybe related to the zfs filesystem setting? Hope can engligthen me on these.

Last edited by Don Cragun; 08-24-2015 at 01:37 AM.. Reason: Change ICODE tags to CODE tags, add ICODE tags.

tharmendran

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snapconv

snapconv(1)							     Emulators							       snapconv(1)

NAME

       snapconv - Sinclair ZX Spectrum snapshot converter

SYNOPSIS

       snapconv [ -c ] [ -n ] infile outfile

DESCRIPTION

       snapconv converts between ZX Spectrum snapshot files.

OPTIONS

       -c     specifies  that  all data in the output snapshot should be compressed, even if that compression will result in a bigger file than if
	      some data is left uncompressed. This helps compatibility with some buggy programs that can only read entirely compressed .z80 files.

       -n     specifies that the output snapshot should be uncompressed.

       -f     specifies that the A and F and A' and F' registers should be swapped.  Version 0.5.0 and older of  libspectrum(3)  had  a  bug  that
	      resulted	in  these registers being swapped in SZX snapshots only. Version 0.5.1 and newer of libspectrum(3) automatically recognise
	      these snapshots and correct the problem, but this flag is necessary to fix some snapshots created by development	versions  only	of
	      libspectrum(3) which had the bug fixed, but cannot be distinguished from snapshots containing the bug.

       infile specifies the snapshot to be converted. This file can be in any of the snapshot formats supported by libspectrum(3).

       outfile
	      specifies  the  output snapshot. The format will be determined by the file extension and can be in any of the formats libspectrum(3)
	      supports for output.

BUGS

       None known.

SEE ALSO

       fuse(1), fuse-utils(1), libspectrum(3), listbasic(1), snap2tzx(1)

       The comp.sys.sinclair Spectrum FAQ, at
       http://www.worldofspectrum.org/faq/index.html.

AUTHOR

       Philip Kendall (philip-fuse@shadowmagic.org.uk).

Version 1.0.0							16th December, 2010						       snapconv(1)