05-09-2008
Hi,
yeah seems pretty similar to what we are always getting from engineering ... so after having tuned a couple of 100 lpars - most of them DB boxes - I would go for following values I think ...
vmo -p -o minperm%=5
vmo -p -o maxperm%=90
vmo -p -o maxclient%=90
vmo -p -o maxperm%=80
vmo -p -o minfree=960
vmo -p -o maxfree=1088
vmo -p -o lru_file_repage=0
vmo -p -o lru_poll_interval=10
ioo -p -o j2_nBufferPerPagerDevice=1024 (if not sufficient you can go upwards 256-wise - but carefully)
ioo -p -o hd_pbuf_cnt=1024 - you can go upwards 256-wise
ioo -p -o numfsbufs=1536 (can be raised up to 2048 if needed)
ioo -p -o pv_min_pbuf=1024 (you can play here up to 1536 but carefully)
ioo -p -o j2_maxRandomWrite=32 - needs monitoring but you can go up to 128 in particular cases
ioo -p -o maxrandwrt=32
ioo -p -o j2_maxPageReadAhead=128
ioo -p -o maxpgahead=16
no -p -o tcp_sendspace=262144
no -p -o tcp_recvspace=262144
no -p -o udp_sendspace=65536
no -p -o udp_recvspace=655360
if you are running cio you can even amend
ioo -p -o lvm_bufcnt=16
But please be aware - all these values are 'best practices' but every system is different, every workload, every query. What can be really great on one system can cause a huge performance impact on another one ... so keep on monitoring.
What you have to avoid are the real problems :
fi fo pi po fr sr in sy cs us sy id wa
41 196 8 0 0 0 1110 29968 10573 17 10 70 3
75 213 11 0 0 0 1043 32556 13921 16 14 62 7
22 74 85 0 0 0 740 57171 6965 21 5 68 6
60 151 99 0 0 0 434 46722 7054 31 11 47 11
96 230 88 0 0 0 1351 32595 11736 19 10 63 8
that means your box is paging out computational pages - so you should fix this at the earliest
vmo -p -o lru_file_repage=0
72.5 numperm percentage
vmo -p -o minperm%=5
vmo -p -o maxperm%=90
vmo -p -o maxclient%=90
vmo -p -o maxperm%=80
4018 pending disk I/Os blocked with no pbuf
48890 paging space I/Os blocked with no psbuf
2740 filesystem I/Os blocked with no fsbuf
110 client filesystem I/Os blocked with no fsbuf
89345 external pager filesystem I/Os blocked with no fsbuf
with
ioo -p -o j2_nBufferPerPagerDevice=1024
ioo -p -o hd_pbuf_cnt=1024
ioo -p -o numfsbufs=1536
ioo -p -o pv_min_pbuf=1024
and afterwards you might even see a few memory pools instead of
0 memory pools
and the rest of the suggested values should at least be beneficial for performance ... and please dont make the mistake to think if a box is running cio there is no filecaching needed. There is ... depending on the amount of processes connecting on the database from any given application this can be immense. And do yourself a favour - put redo-logs into a separate filesystem with (smaller) blocksize of 512 ...
Rgds
zx
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LEARN ABOUT OSF1
install-solaris
install-solaris(1M) install-solaris(1M)
NAME
install-solaris - install the Solaris operating system
SYNOPSIS
install-solaris
install-solaris invokes the Solaris Install program. Depending on graphical capability and available memory at the time of invocation,
install-solaris invokes either a text-based installer or a graphical installer.
The following minimum requirements for physical memory dictate which features are available during installation:
For SPARC machines:
128 MB
Minimum physical memory for all installation types
128 MB
Minimum physical memory required for windowing system
384 MB
Minimum physical memory required for graphical-based installation
For x86 machines:
256 MB
Minimum physical memory for all installation types
256 MB
Minimum physical memory required for windowing system
512 MB
Minimum physical memory required for graphical-based installation
In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number of fea-
tures available.
install-solaris exists only on the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the for more
details.
install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
installation media. Refer to the for disk space requirements.
Refer to the for more information on the various menus and selections.
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcdrom (Solaris instal- |
| |lation media) |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
pkginfo(1), install(1M), pkgadd(1M), attributes(5)
It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.
23 Sep 2005 install-solaris(1M)