> -----Original Message----- > From: Povolotsky, Alexander > Sent: Wednesday, October 06, 2004 9:30 AM > To: '[email protected]'; '[email protected]' > Subject: Will Debian's "native" PowerPC compiler run on "vanilla" > Linux 2.6.8-rc4 on MPC 8275 (PQ2FADS-VR) ? > > Hi, > > Will Debian's "native" PowerPC compiler (similar to gcc version ?) run > on "vanilla" Linux 2.6.8-rc4 on MPC 8275 (PQ2FADS-VR) embedded board ? > Also does Debian have a PowerPC perl package ? and would it run on > "vanilla" Linux 2.6.8-rc4 on MPC 8275 (PQ2FADS-VR) ? > Also did anybody at Debian tried running "Cerberus Test Control System" on > any PowerPC platform (it involves using native compiler > as well as running perl) ? > > Thanks, > Alex > Would anybody at Debian be interested to discuss my lmbench results attached below (comparing "vanilla" Linux 2.6..8-rc4 kernel with and without "kernel preemption" option running on PQ2FADS-VR with MPC 8275) ? Thanks -----Original Message----- From: Povolotsky, Alexander Sent: Saturday, October 02, 2004 10:03 AM To: '[email protected]' Subject: lmbench results (with and without "kernel preemption") for Linux 2.6.8-rc4 on MPC 8275 (PQ2FADS-VR) ?
Hi, Here are my lmbench results (with and without "kernel preemption") for Linux 2.6.8-rc4 on MPC 8275 (PQ2FADS-VR). Are results making any sense in your respected opinion ? Is running lmbench once for each case (with and without "kernel preemption") enough for making any reasonable conclusions (if not - how many times do you recommend to run it ? ) Thanks, Alex Povolotsky PS Configuration details are listed below the test results *************** /* kernel preemption is "off" */ # ./lat_fs 0k 2 352 534 1k 2 311 657 4k 2 275 645 10k 2 192 635 /* kernel preemption is "on" */ # ./lat_fs 0k 33 6171 12039 1k 15 2701 4557 4k 12 2326 4585 10k 9 1534 3693 ************************************* /* kernel preemption is "off" */ # ./lat_pipe Pipe latency: 29.3697 microseconds /* kernel preemption is "on" */ # ./lat_pipe Pipe latency: 35.3225 microseconds ************************************* /* kernel preemption is "off" */ # ./lat_fifo Fifo latency: 29.9354 microseconds /* kernel preemption is "on" */ # ./lat_fifo Fifo latency: 33.4318 microseconds ************************************* /* kernel preemption is "off" */ # ./lat_syscall read Simple read: 1.9111 microseconds # ./lat_syscall write Simple write: 2.3664 microseconds # ./lat_syscall stat ../../ACKNOWLEDGEMENTS Simple stat: 28.1538 microseconds # ./lat_syscall fstat ../../ACKNOWLEDGEMENTS Simple fstat: 4.0989 microseconds # ./lat_syscall open ../../ACKNOWLEDGEMENTS Simple open/close: 673.8750 microseconds /* kernel preemption is "on" */ # ./lat_syscall read Simple read: 2.1007 microseconds # ./lat_syscall write Simple write: 1.6922 microseconds # ./lat_syscall stat ../../ACKNOWLEDGEMENTS Simple stat: 24.8492 microseconds # ./lat_syscall fstat ../../ACKNOWLEDGEMENTS Simple fstat: 5.0310 microseconds # ./lat_syscall open ../../ACKNOWLEDGEMENTS Simple open/close: 716.4286 microseconds ******************************************* /* kernel preemption is "off" */ # ./lat_proc fork Process fork+exit: 2281.0000 microseconds # ./lat_proc exec Process fork+execve: 13794.0000 microseconds # ./lat_proc shell Process fork+/bin/sh -c: 26913.0000 microseconds /* kernel preemption is "on" */ # ./lat_proc fork Process fork+exit: 2349.3333 microseconds # ./lat_proc exec Process fork+execve: 2450.3333 microseconds # ./lat_proc shell Process fork+/bin/sh -c: 27038.0000 microseconds *****************************************8 /* kernel preemption is "off" */ # ./lat_sig install Signal handler installation: 4.0664 microseconds # ./lat_sig catch Signal handler overhead: 16.5183 microseconds /* kernel preemption is "on" */ # ./lat_sig install Signal handler installation: 4.1338 microseconds # ./lat_sig catch Signal handler overhead: 18.3801 microseconds ************************************* /* kernel preemption is "off" */ ./lat_pagefault ../../ACKNOWLEDGEMENTS Pagefaults on ../../ACKNOWLEDGEMENTS: 8.1880 microseconds /* kernel preemption is "on" */ ./lat_pagefault ../../ACKNOWLEDGEMENTS Pagefaults on ../../ACKNOWLEDGEMENTS: 8.3943 microseconds ****************************************** /* kernel preemption is "off" */ # ./lat_ops integer bit: 30.45 nanoseconds integer add: 30.39 nanoseconds integer mul: 39.88 nanoseconds integer div: 121.70 nanoseconds integer mod: 153.55 nanoseconds int64 bit: 51.74 nanoseconds int64 add: 61.48 nanoseconds int64 mul: 118.17 nanoseconds int64 div: 912.71 nanoseconds int64 mod: 809.03 nanoseconds float add: 50.09 nanoseconds float mul: 50.17 nanoseconds float div: 130.98 nanoseconds double add: 50.10 nanoseconds double mul: 55.25 nanoseconds double div: 202.25 nanoseconds float bogomflops: 216.12 nanoseconds double bogomflops: 292.37 nanoseconds /* kernel preemption is "on" */ # ./lat_ops integer bit: 30.53 nanoseconds integer add: 30.40 nanoseconds integer mul: 39.92 nanoseconds integer div: 121.75 nanoseconds integer mod: 152.53 nanoseconds int64 bit: 52.20 nanoseconds int64 add: 61.07 nanoseconds int64 mul: 118.21 nanoseconds int64 div: 913.45 nanoseconds int64 mod: 802.58 nanoseconds float add: 50.14 nanoseconds float mul: 50.21 nanoseconds float div: 130.95 nanoseconds double add: 50.15 nanoseconds double mul: 55.29 nanoseconds double div: 202.18 nanoseconds float bogomflops: 216.32 nanoseconds double bogomflops: 292.68 nanoseconds ************************************ /* kernel preemption is "off" */ # ./bw_pipe Pipe bandwidth: 42.49 MB/sec /* kernel preemption is "on" */ # ./bw_pipe Pipe bandwidth: 42.00 MB/sec *********************************************** Test environment info (I and II) : I) both kernel (after applying the patch) and lmbench are compiled on windows under cygwin. Here is the list of all fixes I used to make it "cygwin compilable" : 1) per http://sources.redhat.com/ml/crossgcc/2004-06/msg00282.html Install patch from bertrand marquis <bertrand_marquis at yahoo dot fr> listed there --- linux-x86-2.6.7/scripts/kconfig/Makefile 2004-06-16 07:20:26.000000000 +0200 +++ linux-x86-2.6.7.cyg/linux-x86-2.6.7/scripts/kconfig/Makefile 2004-06-24 10:39:18.824400000 +0200 @@ -68,8 +68,8 @@ libkconfig-objs := zconf.tab.o host-progs := conf mconf qconf gconf -conf-objs := conf.o libkconfig.so -mconf-objs := mconf.o libkconfig.so +conf-objs := conf.o libkconfig.o +mconf-objs := mconf.o zconf.tab.o ifeq ($(MAKECMDGOALS),xconfig) qconf-target := 1 @@ -89,11 +89,12 @@ endif clean-files := libkconfig.so lkc_defs.h qconf.moc .tmp_qtcheck \ - .tmp_gtkcheck zconf.tab.c zconf.tab.h lex.zconf.c + .tmp_gtkcheck zconf.tab.c zconf.tab.h lex.zconf.c libkconfig.o # generated files seem to need this to find local include files HOSTCFLAGS_lex.zconf.o := -I$(src) HOSTCFLAGS_zconf.tab.o := -I$(src) +HOSTCFLAGS_libkconfig.o := -I$(src) HOSTLOADLIBES_qconf = -L$(QTLIBPATH) -Wl,-rpath,$(QTLIBPATH) -l$(QTLIB) -ldl HOSTCXXFLAGS_qconf.o = -I$(QTDIR)/include @@ -101,6 +102,9 @@ HOSTLOADLIBES_gconf = `pkg-config gtk+-2.0 gmodule-2.0 libglade-2.0 --libs` HOSTCFLAGS_gconf.o = `pkg-config gtk+-2.0 gmodule-2.0 libglade-2.0 --cflags` +$(obj)/libkconfig.c: $(obj)/zconf.tab.c $(obj)/lex.zconf.c + cp $< $@ + $(obj)/conf.o $(obj)/mconf.o $(obj)/qconf.o $(obj)/gconf.o: $(obj)/zconf.tab.h $(obj)/qconf.o: $(obj)/.tmp_qtcheck 2)download and install libelf package from: http://www.gnu.org/directory/libs/misc/libelf.html which provide <gelf.h>; in /cygdrive/c/cygwin/usr/include you can then make an elf.h that just contains #include <gelf.h> 3)apply 2 patches from Martin Schaffner http://mirror.vtx.ch/lfs/patches/downloads/linux/linux-2.6.7-build_on_case_i nsensitive_fs-1.patch http://mirror.vtx.ch/lfs/patches/downloads/linux/linux-2.6.7-build_on_osx-1. patch II) booting with RAMDISK from <ftp://ftp.denx.de/pub/LinuxPPC/usr/src/SELF/images/ and then manually NFS mounting on /fadsroot (from Arabella)placed on Red Hat Linux NFS server PC running [release 9 (Shrike)Kernel 2.4.20-28.9 on an i686]. Lmbench is placed within fadsroot and is executed from there. > >
