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    Subject2.2.19pre6aa1 degraded performance for me...
    ...compared to 2.2.18pre19.

    I use the IDE patch for my CMD648 card, and also 0.90 RAID.

    What I have now (2.2.19pre6aa1+ide-1221):
    [root@iq /root]# hdparm /dev/hd[aceg]

    /dev/hda:
    multcount = 16 (on)
    I/O support = 1 (32-bit)
    unmaskirq = 1 (on)
    using_dma = 1 (on)
    keepsettings = 1 (on)
    nowerr = 0 (off)
    readonly = 0 (off)
    readahead = 16 (on)
    geometry = 13240/16/63, sectors = 13345920, start = 0

    /dev/hdc:
    multcount = 16 (on)
    I/O support = 1 (32-bit)
    unmaskirq = 1 (on)
    using_dma = 1 (on)
    keepsettings = 1 (on)
    nowerr = 0 (off)
    readonly = 0 (off)
    readahead = 16 (on)
    geometry = 35324/16/63, sectors = 35606592, start = 0

    /dev/hde:
    multcount = 16 (on)
    I/O support = 1 (32-bit)
    unmaskirq = 1 (on)
    using_dma = 1 (on)
    keepsettings = 1 (on)
    nowerr = 0 (off)
    readonly = 0 (off)
    readahead = 16 (on)
    geometry = 39560/16/63, sectors = 39876480, start = 0

    /dev/hdg:
    multcount = 16 (on)
    I/O support = 1 (32-bit)
    unmaskirq = 1 (on)
    using_dma = 1 (on)
    keepsettings = 1 (on)
    nowerr = 0 (off)
    readonly = 0 (off)
    readahead = 16 (on)
    geometry = 39560/16/63, sectors = 39876480, start = 0

    [root@iq /root]# free -o
    total used free shared buffers cached
    Mem: 392808 389948 2860 0 15732 177004
    Swap: 308432 0 308432
    [root@iq /root]# cat /proc/swaps
    Filename Type Size Used Priority
    /dev/hda2 partition 102812 0 0
    /dev/hde2 partition 102812 0 0
    /dev/hdg2 partition 102808 0 0
    [root@iq /root]# smbstatus|grep -E '
    [[:digit:]]+.[[:digit:]]+.[[:digit:]]+.[[:digit:]]+'|cut -c
    30-39|sort|uniq|wc -l
    41
    [root@iq /root]# ifspeed 1
    1.578717MB/s 0000000000000000000000>
    1.758066MB/s 0000000000000000000000000>
    1.526362MB/s 000000000000000000000>
    1.530314MB/s 000000000000000000000>
    1.659107MB/s 00000000000000000000000>
    1.722287MB/s 000000000000000000000000>
    1.542517MB/s 0000000000000000000000>
    1.585877MB/s 0000000000000000000000>
    1.417126MB/s 00000000000000000000>
    1.496284MB/s 000000000000000000000>
    1.442938MB/s 00000000000000000000>
    1.743159MB/s 0000000000000000000000000>
    1.716102MB/s 000000000000000000000000>
    1.765166MB/s 0000000000000000000000000>
    1.509863MB/s 000000000000000000000>
    1.638345MB/s 00000000000000000000000>
    1.953884MB/s 0000000000000000000000000000>
    1.723031MB/s 000000000000000000000000>
    1.917233MB/s 000000000000000000000000000>
    1.474753MB/s 000000000000000000000>

    (I have just sent ifspeed to this list)

    So sustained througput on eth0 (Digital DE500) below 2MBytes/s currently.
    used to be >5MBytes/s with this many users (they are either changing and
    reading dirs, or reading or writing >500MBytes files, so speed,
    bandwidth, throughput would be essential)

    What I had w/2.2.18pre19 (+raid+ide):
    ~80MB more in cache and ~80MB swapped out (eg. currently unused notes
    server and squid) There is enough of swap over 3 disks (like the
    raid), so I did not bother disabling squid and notes, since - I thought -
    they would only take up some swap unused.

    Unfortunatelly not so.

    Anybody has ideas of some /proc tuning maybe able to help my situation?

    ( currently I use:
    # Enable more files and inodes to be used
    echo '65536' > /proc/sys/fs/file-max
    echo '262144' > /proc/sys/fs/inode-max
    echo "10240 61000" > /proc/sys/net/ipv4/ip_local_port_range
    echo "134217728" > /proc/sys/kernel/shmmax
    echo "300" > /proc/sys/net/ipv4/tcp_keepalive_time
    )
    --
    SaPE - Peter, Sasi - mailto:sape@sch.hu - http://sape.iq.rulez.org/


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