My desktop is a Supermicro X7DAE dual quad core Xeon (2Ghz), with a 1TB
RAID 1 boot device and a single 4 TB archive device running off a 3ware
9750 PCI-E card. A second RAID 5 array running off an older 3ware 9550
PCI-X card is currently off line (drives pulled). Video is a ATI/AMD
5500 PCI-E card.
History:
Ubuntu Studio (using "Studio) afterwards) 16 ran fine; v 18 was
extremely slow once installed, taking many minutes to complete simple
tasks. I ran 19.04 but although faster than 18 it was still much slower
than 16.
I have since switched to XUBUNTU 19 on the same hardware, speed is OK.
The major issue seems to be disk speed. Untarring my "/home" directory
using 19 takes most of a day; XUBUNTU does it in 2 1/2 hours. A crude
speed comparison shows that Stuido 19 takes 7 seconds to copy a file on
the 4TB drive to /dev/null while XUBUNTU takes less than 1 second.
"iostat" shows Studio running at under 5 Mb/sec while XUBUNTU clocks
between 30 and 50 Mb/sec.
Speeds using "unixbench" (the old Byte UNIX benchmark) don't seem to
show a major difference between Studio and XUBUNTU, except in single CPU
file copy speeds where Studio is about 20% slower.
One observed difference is that when running "top" the Studio system
spends about 40% of its CPU cycles in "wait" status; XUBUNTU is close to
zero.
I am now running a production environment using XUBUNTU on a 2 TB RAID 1
array and a test Studio environment on a 1.5 GB RAID 1 array; with the
3ware card I can just plug/unplug.
I would like to experiment with going from XUBUNTU to Studio using the
process that I think I saw discussed where an upgrade package could be
applied to an existing XUBUNTU installation. If I can break the install
into its component pieces it may be possible to determine where the
Studio version is different.
Thanks,
Mike Squires
(In case anyone is wondering: my primary home computer started with a
Tandy XENIX 68K box in 1986 after running one at work in 1985
(..!ncoast!sir-alan!mikes). I moved to 386BSD/FreeBSD about 1990 and
currently use a quad Opteron box running FreeBSD as the house server
with a single CPU box as the firewall/router behind a Comcast box.)
--
Michael L. Squires, Ph.D., M.P.A.
546 North Park Ridge Road
Bloomington, IN 47408
Home phone: 812-333-6564
Cell phone: 812-369-5232
www.siralan.org or www.smithgreensound.com
UN*X at home since 1985
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