Since a few days copying data became really slow. Unfortunately I cannot identify what emerge -uD world caused my troubles. Some data to track down the issue: after creation of a test file > dd bs=1024 count=102400 if=/dev/urandom of=test.dat 102400+0 records in 102400+0 records out 104857600 Bytes (105 MB) copied, 36,4187 seconds, 2,9 MB/s a timed copy (cp) leads to: > time cp test.dat test2.dat real 6m14.439s user 0m0.006s sys 6m11.753s with high cpu load, e.g. mouse in kde just erratically jumping... whereas a timed dd of the same test file gives: > time dd if=test.dat of=test3.dat 204800+0records in 204800+0 records out 104857600 Bytes (105 MB) copied, 2,20164 seconds, 47,6 MB/s real 0m2.258s user 0m0.08s sys 0m2.019s The timed runs were done on the console. Mouse behavior was observed in several test runs under kde :-) Any ideas? Best regards, Marcus Lindemann reiserfs, > df -h /dev/hda9 84G 70G 15G 83% /home # lspci |grep IDE 00:1f.1 IDE interface: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE Controller (rev 02) # hdparm /dev/hda /dev/hda: multcount = 0 (off) IO_support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 1 (on) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) geometry = 16383/255/63, sectors = 241254720, start = 0 # hdparm -i /dev/hda /dev/hda: Model=IC35L120AVV207-0, FwRev=V24OA66A, SerialNo=VNVD06G4CVB8RL Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=52 BuffType=DualPortCache, BuffSize=1821kB, MaxMultSect=16, MultSect=off CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=241254720 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 AdvancedPM=yes: disabled (255) WriteCache=enabled Drive conforms to: ATA/ATAPI-6 T13 1410D revision 3a: ATA/ATAPI-2 ATA/ATAPI-3 ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 > emerge --info Portage 2.1_pre9-r5 (default-linux/x86/2006.0, gcc-3.4.6, glibc-2.3.6-r3, 2.6.16 i686) ================================================================= System uname: 2.6.16 i686 Intel(R) Pentium(R) 4 CPU 2.60GHz Gentoo Base System version 1.12.0_pre18 dev-lang/python: 2.4.2-r1 sys-apps/sandbox: 1.2.17 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/libtool: 1.5.22 virtual/os-headers: 2.6.11-r5 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-march=pentium4 -O3 -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.5/env /usr/kde/3.5/share /config /usr/kde/3.5/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib/ fax /usr/share/config /var/bind /var/qmail/control /var/spool/fax/etc" CONFIG_PROTECT_MASK="/etc/eselect/compiler /etc/gconf /etc/revdep-rebuild /etc/t erminfo /etc/texmf/web2c /etc/env.d" CXXFLAGS="-march=pentium4 -O3 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks metadata-transfer sandbox sfperms strict" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/ distributions/gentoo" LANG="de_DE@euro" LINGUAS="en de" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X a52 aac aalib acl acpi alsa apache2 apm arts asf async audiofile avi bash -completion berkdb bitmap-fonts bluetooth browserplugin bzip2 cdr cli crypt cups dba dbus dga divx4linux dri dts dv dvd dvdr dvdread emboss encode exif expat f7 7 fam ffmpeg flac foomaticdb fortran ftp gd gdbm gdk-pixbuf gif gimp gimpprint g lut gnokii gnome gphoto2 gpm gtk gtk2 guile hal ieee1394 imagemagick imap imlib ipv6 irda isdnlog java jpeg kde lcms libg++ libwww lm_sensors mad matrox mbox mi kmod mng motif mp3 mpeg mpm-prefork mysql ncurses nls nptl nptlonly nsplugin off ensive ogg oggvorbis opengl oss pam pcre pdf pdflib perl png pppd python qt quic ktime readline reflection rtc ruby samba sdl session sharedmem soap sockets spel l spl sqlite sse ssl svga tcltk tcpd tetex tidy tiff tokenizer truetype truetype -fonts type1-fonts udev unicode usb vcd vorbis wifi win32codecs wmf x86 xinerama xml xml2 xmlreader xmlrpc xmms xorg xpm xv xvid xvmc zip zlib elibc_glibc kerne l_linux linguas_en linguas_de userland_GNU" Unset: ASFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LDFLAGS
Hmm... please post full uname: uname -a and hdparm device test results: hdparm -t /dev/hda It looks like a kernel problem. Did you install that 2.6.16 by hand? Or maybe you've hit the internal fragmentation level of ReiserFS v3. 83% is quite a full disc. Anyway, you have to provide cold cache timings. The dd one seems to be hot cache.
# uname -a Linux host 2.6.16 #1 SMP Wed Mar 22 11:51:23 CET 2006 i686 Intel(R) Pentium(R) 4 CPU 2.60GHz GNU/Linux installed from official kernel source without patches # hdparm -t /dev/hda /dev/hda: Timing buffered disk reads: 116 MB in 3.03 seconds = 38.27 MB/sec Maybe the disk is dying?
any messages about the disk in dmesg?
the usual stuff in dmesg: io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered (default) Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx ICH5: IDE controller at PCI slot 0000:00:1f.1 PCI: Enabling device 0000:00:1f.1 (0005 -> 0007) ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 16 ICH5: chipset revision 2 ICH5: not 100% native mode: will probe irqs later ide0: BM-DMA at 0xfc00-0xfc07, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0xfc08-0xfc0f, BIOS settings: hdc:DMA, hdd:pio Probing IDE interface ide0... hda: IC35L120AVV207-0, ATA DISK drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 Probing IDE interface ide1... hdc: JLMS XJ-HD166S, ATAPI CD/DVD-ROM drive ide1 at 0x170-0x177,0x376 on irq 15 hda: max request size: 512KiB hda: 241254720 sectors (123522 MB) w/1821KiB Cache, CHS=16383/255/63, UDMA(100) hda: cache flushes supported hda: hda1 hda2 < hda5 hda6 hda7 hda8 hda9 > ReiserFS: hda9: found reiserfs format "3.6" with standard journal ReiserFS: hda9: using ordered data mode ReiserFS: hda9: journal params: device hda9, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30 ReiserFS: hda9: checking transaction log (hda9) ReiserFS: hda9: Using r5 hash to sort names
Reopen if you have some information to diagnose the problem...
