For the last 3 releases of the gentoo-sources I have been getting 1mb/s of performance on my network card during file transfer. It starts out a transfer for the first 10 seconds at an acceptable speed for a 10/100 ethernet adapter but soon after that it drops to an intollerably poor transfer rate. The network performance with the older sk98lin driver was fine, but since 2.6.16 it is unsupported. Note this problem was also experienced when my system was compiled and using gcc 3.4.6 lspci: 02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8036 PCI-E Fast Ethernet Controller (rev 12) emerge --info: Portage 2.1_rc4-r5 (default-linux/x86/no-nptl, gcc-4.1.1/vanilla, glibc-2.3.6-r4, 2.6.16-gentoo-r9 i686) ================================================================= System uname: 2.6.16-gentoo-r9 i686 Intel(R) Celeron(R) M processor 1.40GHz Gentoo Base System version 1.12.1 dev-lang/python: 2.4.3-r1 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: [Not Present] dev-util/confcache: [Not Present] sys-apps/sandbox: 1.2.18.1 sys-devel/autoconf: 2.13, 2.59-r7 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2 sys-devel/binutils: 2.16.1-r2 sys-devel/gcc-config: [Not Present] sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r5 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-march=pentium-m -O2 -pipe -fomit-frame-pointer" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/env.d /etc/gconf" CXXFLAGS="-march=pentium-m -O2 -pipe -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks metadata-transfer sandbox sfperms strict" GENTOO_MIRRORS="http://distfiles.gentoo.org http://www.ibiblio.org/pub/Linux/distributions/gentoo" LINGUAS="en_ZA" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude='/distfiles' --exclude='/local' --exclude='/packages'" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/overlays/xgl-coffee" SYNC="rsync://ftp.leg.uct.ac.za/pub/linux/gentoo-portage" USE="x86 3dnow X aac acpi alsa arts audiofile avi bash-completion berkdb bitmap-fonts bonobo bzip2 cairo cdr cli crypt dbus dri dvd dvdread emboss encode ffmpeg firefox foomaticdb fortran ftp gcj gdbm gif glitz gnome gpm gstreamer gstreamer010 gtk gtk2 hal ieee1394 imlib ipv6 isdnlog java javascript jpeg libg++ libnotify libwww mad mikmod mmx mono motif mp3 mpeg ncurses nls nokia6600 ogg openal opengl oss pam pcmcia pcre pdf pdflib perl php png pppd python quicktime readline reflection samba sdl session sms sockets spell spl sse sse2 ssl svg tcpd tiff truetype truetype-fonts type1-fonts udev unicode usb utf8 vcd vorbis win32codecs winbind wma xfs xine xml xorg xpm xv xvid zip zlib elibc_glibc input_devices_keyboard input_devices_mouse input_devices_synaptics input_devices_evdev kernel_linux linguas_en_ZA userland_GNU video_cards_vesa video_cards_fglrx" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Please name the exact kernels that you have tested sky2 under and whether they do or do not work. Please attach dmesg output after the slowdown and /proc/interrupts as well
(In reply to comment #1) > Please name the exact kernels that you have tested sky2 under and whether they > do or do not work. > > Please attach dmesg output after the slowdown and /proc/interrupts as well > gentoo-sources-2.6.16-r6 <-hangs completely on all transfers gentoo-sources-2.6.16-r7 <-poor performance as described above gentoo-sources-2.6.16-r8 <-poor performance as described above gentoo-sources-2.6.16-r9 <-poor performance as described above I have attached the dmesg and /proc/interrupts after slowdown on gentoo-sources-2.6.16-r9 /proc/interrupts: CPU0 0: 9957822 local-APIC-edge timer 1: 20222 IO-APIC-edge i8042 8: 2 IO-APIC-edge rtc 12: 570001 IO-APIC-edge i8042 14: 15763 IO-APIC-edge ide0 15: 1062895 IO-APIC-edge ide1 16: 3 IO-APIC-level ohci1394, yenta 17: 217811 IO-APIC-level HDA Intel 18: 151687 IO-APIC-level ehci_hcd:usb1, ohci_hcd:usb2, ohci_hcd:usb3, sky2 19: 2389020 IO-APIC-level fglrx 21: 21998 IO-APIC-level acpi NMI: 0 LOC: 9957857 ERR: 0 MIS: 0
I get an error when I try to attach, so here is my dmesg |grep sky2 sky2 v1.4 addr 0xc0200000 irq 18 Yukon-FE (0xb7) rev 1 sky2 eth1: addr 00:e0:91:02:f1:1a
I disabled the following in my kernel: [ ] Local APIC support on uniprocessors [ ] IO-APIC support on uniprocessors (NEW) The problem seems to be solved. Usage is now at 30-50% as opposed to 2% experienced before.
A valuable observation but not an acceptable fix, reopening...
Please reproduce this on 2.6.18-rc2 with IO-APIC on and this patch applied: http://marc.theaimsgroup.com/?l=linux-netdev&m=115314452123184&q=raw
see comment #6
