Poor repainting w/ loaded CPU

Does anyone have any insight as to what happens to repainting when the system CPU is heavily loaded, essentially 100%?
The situation I have is somewhat like AutoCAD. The application is constantly retrieving a bunch (243) of XY coordinates from a remote server, then displays them on a grid which takes up most of the user's screen. The retrieving thread only calls repaint on the graph component (a custom widget I made). My buttons and menus redraw poorly, if at all, but the graph data redraws just fine. The retrieving thread calls repaint() on my graph component approximately 60 to 100 times a second.
Does it matter how the Swing thread coalesces paint requests? Does anyone know how that works?
Thanks.

It turns out that using drawRect() to draw 100 small rectangles is about 10x slower than drawing them with fillRect(). The rectangles are only 2 pixels by 2 pixels. I swapped the function calls and it worked soooo much faster.
I think this is strange, does anyone else?

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    Adaptive Wide Angle 15.2, Copyright © 2014 Adobe Systems Incorporated - from the file “Adaptive Wide Angle.plugin”
    Angled Strokes 15.2, Copyright © 1991-2014 Adobe Systems Incorporated - from the file “Filter Gallery.plugin”
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    Camera Raw 8.6 (254), Copyright © 2014 Adobe Systems Incorporated - from the file “Camera Raw.plugin”
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    Chalk & Charcoal 15.2, Copyright © 1991-2014 Adobe Systems Incorporated - from the file “Filter Gallery.plugin”
    Charcoal 15.2, Copyright © 1991-2014 Adobe Systems Incorporated - from the file “Filter Gallery.plugin”
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    Conté Crayon 15.2, Copyright © 1991-2014 Adobe Systems Incorporated - from the file “Filter Gallery.plugin”
    Craquelure 15.2, Copyright © 1991-2014 Adobe Systems Incorporated - from the file “Filter Gallery.plugin”
    Crop and Straighten Photos 2014.2.0 x001 ©2003-2014 Adobe Systems Incorporated - from the file “CropPhotosAuto.plugin”
    Crop and Straighten Photos Filter 15.2, Copyright © 2003-2014 Adobe Systems Incorporated - from the file “Standard Multiplugin.plugin”
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    Median 2014.2.0 x001 ©2006-2014 Adobe Systems Incorporated - from the file “statistics.plugin”
    Mezzotint 15.2, Copyright © 2003-2014 Adobe Systems Incorporated - from the file “Standard Multiplugin.plugin”
    Minimum 2014.2.0 x001 ©2006-2014 Adobe Systems Incorporated - from the file “statistics.plugin”
    MMXCore Routines 2014.2.0 x001 ©1990-2014 Adobe Systems Incorporated - from the file “MMXCore.plugin”
    Mosaic Tiles 15.2, Copyright © 1991-2014 Adobe Systems Incorporated - from the file “Filter Gallery.plugin”
    Multiprocessor Support 2014.2.0 x001 ©1990-2014 Adobe Systems Incorporated - from the file “MultiProcessor Support.plugin”
    Neon Glow 15.2, Copyright © 1991-2014 Adobe Systems Incorporated - from the file “Filter Gallery.plugin”
    Note Paper 15.2, Copyright © 1991-2014 Adobe Systems Incorporated - from the file “Filter Gallery.plugin”
    NTSC Colors 2014.2.0 x001 ©1993-2014 Adobe Systems Incorporated - from the file “NTSC Colors.plugin”
    Ocean Ripple 15.2, Copyright © 1991-2014 Adobe Systems Incorporated - from the file “Filter Gallery.plugin”
    OpenEXR 15.2, Copyright © 2003-2014 Adobe Systems Incorporated - from the file “Standard Multiplugin.plugin”
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    Photoshop 3D Engine 2014.2.0 x001 ©2006-2014 Adobe Systems Incorporated - from the file “Photoshop3DEngine.plugin”
    Photoshop Touch CC 2014 (15.2.0.0) ©1993-2014 Adobe Systems Incorporated - from the file “PSDX.plugin”
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    PLY 2014.2.0 x001 ©2006-2014 Adobe Systems Incorporated - from the file “U3D.plugin”
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    Pointillize 15.2, Copyright © 2003-2014 Adobe Systems Incorporated - from the file “Standard Multiplugin.plugin”
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    PRC 2014.2.0 x001 ©2006-2014 Adobe Systems Incorporated - from the file “U3D.plugin”
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    Radiance 2014.2.0 x001 ©2003-2014 Adobe Systems Incorporated - from the file “Radiance.plugin”
    Range 2014.2.0 x001 ©2006-2014 Adobe Systems Incorporated - from the file “statistics.plugin”
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    Render Color Lookup Grid 2014.2.0 x001 ï¿1⁄22012-2014 Adobe Systems Incorporated - from the file “Export3DLUT.plugin”
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    Ripple 15.2, Copyright © 2003-2014 Adobe Systems Incorporated - from the file “Standard Multiplugin.plugin”
    Rough Pastels 15.2, Copyright © 1991-2014 Adobe Systems Incorporated - from the file “Filter Gallery.plugin”
    Save for Web 15.2, Copyright © 1999-2014 Adobe Systems Incorporated - from the file “Save for Web.plugin”
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    Shake Reduction 15.2, Copyright © 2014 Adobe Systems Incorporated - from the file “Shake Reduction.plugin”
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    I'm on a new Mackbook Pro 15"
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  • 6500/SUP32 High CPU load & process switching troubles.

    Hi!
    At one of the nodes used catalyst 6500 with sup32 running software12.2(33)SXH5 , there are problems with high load CPU due to interrapts:
    CPU utilization for five seconds: 56%/45%; one minute: 57%; five minutes: 55%
    PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
       8    67138180   7538435       8906  7.19%  5.74%  5.70%   0 ARP Input
    100    17392892    145853     119253  1.35%  1.90%  1.95%   0 HC Counter Timer
      89    23849784    388043      61462  0.87%  1.06%  1.11%   0 Compute load avg
    196     7210696    749626       9619  0.55%  0.87%  0.85%   0 CEF: IPv4 proces
    138     3505932  17454349        200  0.31%  0.44%  0.38%   0 ADJ resolve proc
    136     7986672  29865853        267  0.23%  0.35%  0.34%   0 IP Input
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    I installed the SPAN session on RP and found an ordinary network traffic clients (http, etc.), that must be harhware CEF switched.
    It is obvious that the traffic enters the process switching:
    Interface information:
            Interface IBC0/0(idb 0x454A98F0)
            Hardware is Mistral IBC (revision 5)
            0 minute rx rate 231062000 bits/sec, 40653 packets/sec
            0 minute tx rate 230981000 bits/sec, 40542 packets/sec
            768441545 packets input, 763672035960 bytes
            0 broadcasts received
            763863117 packets output, 763298719016 bytes
            2 broadcasts sent
            0 Inband input packet drops
            0 Bridge Packet loopback drops
            0 Rx packets dropped with Multicast MAC and Unicast IP
            767110946 Packets CEF Switched, 1279 Packets Fast Switched
            0 Packets SLB Switched, 0 Packets CWAN Switched
            Potential/Actual paks copied to process level 1309036/1308996 (40 dropped, 40 spd drops)
            514919227 inband interrupts
            71265 transmit ring cleanups
            514994756 ibl inputs
            71265 total tx interrupts set
                71265 tx ints due to packets outstanding
                0 tx ints due low free buffers in pool
                0 tx ints due to application setting
            tx dma done batch size=32
            buffers free minimum before tx int=4
            mistral ran out of tx descriptors 0 times
            mistral tx interrupt inconsisteny occured 0 times
            Label switched pkts dropped: 0
            Xconnect pkts processed: 0, dropped: 0
            IBC resets   = 2; last at 14:15:03.733 msd Tue Mar 29 2011
    -=-
    --sup32-TEST###sh ip cef switching statistics
           Reason                          Drop       Punt  Punt2Host
    RP LES Packet destined for us             0     100098          0
    RP LES No adjacency                    7609          0          0
    RP LES Incomplete adjacency          979470          0        313
    RP LES TTL expired                        0          0       4511
    RP LES Discard                         7811          0          0
    RP LES Features                     3127605          0     288855
    RP LES Unclassified reason              833          0          0
    RP LES Neighbor resolution req       507057         58          0
    RP LES Total                        4630385     100156     293679
    All    Total                        4630385     100156     293679
    I took the document https: / / supportforums.cisco.com/docs/DOC-14086, but he could not understand on what basis the traffic enters the process switching.
    Some logs:
    sup32-TEST###sh cef not-cef-switched
    % Command accepted but obsolete, see 'show (ip|ipv6) cef switching statistics [feature]'
    IPv4 CEF Packets passed on to next switching layer
    Slot  No_adj No_encap Unsupp'ted Redirect  Receive  Options   Access     Frag
    RP         0       0      293175        0    99949        0   288300        0
    5/0        0       0           0        0        0        0        0        0
    or:
    sup32-TEST###sh ip cef switching statistics
           Reason                          Drop       Punt  Punt2Host
    RP LES Packet destined for us             0     100098          0
    RP LES No adjacency                    7609          0          0
    RP LES Incomplete adjacency          979470          0        313
    RP LES TTL expired                        0          0       4511
    RP LES Discard                         7811          0          0
    RP LES Features                     3127605          0     288855
    RP LES Unclassified reason              833          0          0
    RP LES Neighbor resolution req       507057         58          0
    RP LES Total                        4630385     100156     293679
    All    Total                        4630385     100156     293679
    The organization of this site is simple enough:
    uplink (Vlan24, 2GB EtherChannel) and about 3500 SVI with IP Unnimbered feature and static routes with 32 bit mask for customers, for example:
    interface Vlan101
      ip unnumbered Loopback0
      ip access-group 110 in
    end
    ip route 192.168.100.101 255.255.255.255 Vlan 101
    interface Loopback0
    ip address 192.168.100.1 255.255.255.0
    ip address 192.168.101.1 255.255.255.0
    etc...
    Default route is obtained by the EIGRP
    The essence of my question: How can I determine the reason the traffic hits the CPU?
    I would be grateful for any ideas, ready to provide any diagnostic data.
    Thanks for your help.
    Regards,
      Dmitry

    L3Aging is related to NDE(Netflow Data Export). Check for any anomalies.
    Also, on a side note, I could not help noticing that you are running 6.1(1b). You might want to go latest 6.4(x) which is general deployment to get various security vulnerability, diagnostic enhancement and other bug fixes.
    PS: Remember to rate useful posts.

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