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These are the Release Notes for the 2.1pl3 revision of netperf:
*) An OBOB (Off By One Bug) in netlib.c that was causing a core dump
on Irix should be fixed.
*) Irix systems should now be able to determine the number of CPU's
present automagically (code from outside, not tested yet because I
have no MP Irix systems at my disposal)
*) An alpha version of a TCP_CC test has been added - this is a
TCP_CRR test with out the "RR."
*) The -Ae has been removed from the default makefile. If someone has
a nice way to automagically generate the correct makefile for
different platforms I would like to learn how.
happy benchmarking,
rick jones <raj@cup.hp.com>
----------------------------------------------------------------------
These are the Release Notes for the 2.1 revision of netperf:
Things Changed in this release:
*) The XTI (Version 2 of the spec) tests are now documented in the
manual.
*) The TCP_CRR (Connect Request/Response) test is now documented in
the manual, including a description of how it mimics the behaviour
of http (the protocol underlying the WWW).
*) Support for for Windows NT 3.51 OS in the BSD Sockets tests (ok, so
they are really Winsock in that case :). Other test suites may be
ported as required/desired/appropriate.
*) Tests for TCP and UDP, using the IPv6 extensions to BSD sockets are
included in this release. They are included by adding -DUSE_IPv6 to
the makefile and recompiling.
*) Support for a "long long" datatype should only be required for
-DUSE_PSTAT compilation which is an HP-UX only thing. The
*unbundled* HP compilers from at least "HP92453-01 A.09.61 HP C
Compiler" and later should have the required support. The bundled
compiler may not. GCC should work - check the archives listed in
the comp.sys.hp.hpux FAQ for copies. The FAQ is archived on
rtfm.mit.edu under the path pub/usenet/comp.sys.hp.hpux.
*) A "proper" fix for double data type alignment has been included.
*) A new script is included with this release which can be used to
measure aggregate TCP_RR performance (multiple, concurrent
instances of the TCP_RR test). A related use of this script would
be measuring MP scaling. A single-byte TCP_RR test is good for this
purpose for two reasons:
1) it excercises the control/protocol paths heavily without
using much in the way of data copies which may be easier to
scale.
2) most systems can easily saturate cards with bandwidth, but
not so easily with request/response
Of course, feedback on this is most welcome.
*) When measuring CPU utilization, the units for service demand have
been changed from milliseconds (designated ms) of CPU per unit (KB
or Transaction) to microseconds (desginated us).
*) For accurate reporting of service demand, netperf needs to know the
number of CPU's present on a system. On some systems (HP-UX), this
is automatic. For others (All), it is necessary to add a global "-n
<numcpu>" option to both netperf and netserver.
!! IF THIS IS LEFT-OUT CPU UTILIZATION AND SERVICE DEMAND FOR !!
!! MULTI-PROCESSOR SYSTEMS WILL BE WRONG. !!
If you know of ways to programatically determine the number of
active CPUs on a system, please let the author Rick Jones
<raj@cup.hp.com> know.
*) other things I've probably forgotten :)
Things Not Changed in this release:
*) The ancillary test suites are essentially unchanged - DLPI,
HiPPI/LLA, Unix Domain, and Fore ATM API. Unless there is much
interest expressed in these tests, 2.1 may be the last release in
which they are included. The order of retirement would likely be
Unix Domain, HiPPI/LLA, Fore ATM API, and then DLPI.
Miscelaneous Comments:
*) The -DUSE_LOOPER CPU utilization _seems_ to be nice and low-impact
on HP-UX, Digital Unix, and IRIX. It does not yet seem to be
low-impact on Solaris (I need an example of priocntl usage), AIX
(setpri only works if you are root), and NT (not sure of the
reason). Help with those problems would be most appreciated.
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