- SC'08
- Austin 近十日天氣預報
- 無線網路:
C:\>tracert 140.110.1.1
Tracing route to 140.110.1.1 over a maximum of 30 hops
1 2 ms <1 ms <1 ms conf-rtr-south-vlan203.sc08.org [140.221.224.3]
2 3 ms 1 ms 1 ms core-rtr-1-conf-rtr-south.sc08.org [140.221.251.114]
3 34 ms 33 ms 33 ms nlr-la-rtr-core-rtr-1.sc08.org [140.221.251.134]
4 60 ms 58 ms 59 ms seat-losa-49.layer3.nlr.net [216.24.186.13]
5 62 ms 60 ms 64 ms twaren-1-is-jmb-776.lsanca.pacificwave.net [207.231.241.133]
6 294 ms 313 ms 313 ms la-76-hc-gsr.twaren.net [211.79.48.229]
7 250 ms 313 ms 312 ms hc-76-v20.twaren.net [211.79.60.113]
8 248 ms 313 ms 313 ms 140.110.1.1
Trace complete.
My traceroute [v0.73]
intrepid (0.0.0.0) Sun Nov 16 00:54:03 2008
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. 172.21.253.2 0.0% 259 0.3 0.3 0.2 6.1 0.4
2. 140.110.1.1 0.0% 259 226.3 279.1 221.1 1018. 61.5
jazz@intrepid:~$ sudo iperf -c 140.110.240.192 -u
------------------------------------------------------------
Client connecting to 140.110.240.192, UDP port 5001
Sending 1470 byte datagrams
UDP buffer size: 122 KByte (default)
------------------------------------------------------------
[ 3] local 172.21.253.152 port 33083 connected with 140.110.240.192 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 1.25 MBytes 1.05 Mbits/sec
[ 3] Sent 892 datagrams
[ 3] Server Report:
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 3] 0.0- 9.9 sec 1.25 MBytes 1.05 Mbits/sec 2.526 ms 0/ 891 (0%)
[ 3] 0.0- 9.9 sec 1 datagrams received out-of-order
jazz@intrepid:~$ sudo iperf -c 140.110.240.192 -u -w 10M
------------------------------------------------------------
Client connecting to 140.110.240.192, UDP port 5001
Sending 1470 byte datagrams
UDP buffer size: 244 KByte (WARNING: requested 10.0 MByte)
------------------------------------------------------------
[ 3] local 172.21.253.152 port 56643 connected with 140.110.240.192 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 1.25 MBytes 1.05 Mbits/sec
[ 3] Sent 893 datagrams
[ 3] Server Report:
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 3] 0.0-10.0 sec 1.25 MBytes 1.05 Mbits/sec 0.670 ms 0/ 893 (0%)
- 光纖網路:
C:\>tracert 140.110.1.1
Tracing route to 140.110.1.1 over a maximum of 30 hops
1 <1 ms <1 ms <1 ms A-rtr.1851.sc08.org [140.221.141.1]
2 32 ms 1 ms <1 ms core-rtr-1-2-dnoc-rtr-2046-2.sc08.org [140.221.251.69]
3 32 ms 32 ms 32 ms nlr-la-rtr-core-rtr-1.sc08.org [140.221.251.134]
4 58 ms 57 ms 57 ms seat-losa-49.layer3.nlr.net [216.24.186.13]
5 60 ms 59 ms 59 ms twaren-1-is-jmb-776.lsanca.pacificwave.net [207.231.241.133]
6 224 ms 225 ms 224 ms la-76-tp-gsr.twaren.net [211.79.48.209]
7 226 ms 226 ms 226 ms hc-76-v20.twaren.net [211.79.60.113]
8 227 ms 227 ms 227 ms 140.110.1.1
Trace complete.
jazz@intrepid:~$ sudo mtr 140.110.1.1
My traceroute [v0.73]
intrepid (0.0.0.0) Sun Nov 16 00:44:24 2008
Resolver: Received error response 5. (refused by name server)elds quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. 172.21.253.2 0.0% 616 0.3 0.2 0.2 1.3 0.1
2. 140.110.1.1 0.0% 616 228.1 228.9 227.6 410.2 12.3
jazz@intrepid:~$ sudo iperf -c 140.110.240.192 -u
------------------------------------------------------------
Client connecting to 140.110.240.192, UDP port 5001
Sending 1470 byte datagrams
UDP buffer size: 122 KByte (default)
------------------------------------------------------------
[ 3] local 172.21.253.152 port 50095 connected with 140.110.240.192 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 1.25 MBytes 1.05 Mbits/sec
[ 3] Sent 893 datagrams
[ 3] Server Report:
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 3] 0.0-10.0 sec 1.25 MBytes 1.05 Mbits/sec 1.975 ms 0/ 892 (0%)
[ 3] 0.0-10.0 sec 1 datagrams received out-of-order
jazz@intrepid:~$ sudo iperf -c 140.110.240.192 -u -w 10M
------------------------------------------------------------
Client connecting to 140.110.240.192, UDP port 5001
Sending 1470 byte datagrams
UDP buffer size: 244 KByte (WARNING: requested 10.0 MByte)
------------------------------------------------------------
[ 3] local 172.21.253.152 port 53022 connected with 140.110.240.192 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 1.25 MBytes 1.05 Mbits/sec
[ 3] Sent 893 datagrams
[ 3] Server Report:
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 3] 0.0-10.0 sec 1.25 MBytes 1.05 Mbits/sec 1.827 ms 0/ 893 (0%)
- [DRBL] jfbterm Bug
- [備註] 如果沒有裝 v86d 的話，當執行 modprobe uvesafb 時會在 dmesg 看到以下資訊
[ 703.839376] uvesafb: failed to execute /sbin/v86d
[ 703.840224] uvesafb: make sure that the v86d helper is installed and executable
[ 703.841494] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2)
[ 703.842307] uvesafb: vbe_init() failed with -22
[ 703.843019] uvesafb: probe of uvesafb.0 failed with error -22
- [備註] 如果有裝 v86d 的話，當執行 modprobe uvesafb 時會在 dmesg 看到以下資訊
[ 268.848377] uvesafb: VMware, IncVMware virtual machine2.0, VMware virtual machine2.0, 2.0, OEM: V M ware, Inc. VBE support 2.0VMware, IncVMware virtual machine2.0, VBE v2.0
[ 268.884099] uvesafb: no monitor limits have been set, default refresh rate will be used
[ 268.885202] uvesafb: VBE state buffer size cannot be determined (eax=0x0, err=0)
[ 268.885265] uvesafb: scrolling: redraw
[ 268.896617] mtrr: your processor doesn't support write-combining
[ 268.909303] Console: switching to colour frame buffer device 128x48
[ 269.938085] uvesafb: framebuffer at 0xf0000000, mapped to 0xffffc20000180000, using 16384k, total 16384k
[ 269.938101] fb0: VESA VGA frame buffer device
-
root@intrepid:~# modinfo uvesafb
filename: /lib/modules/2.6.27-7-server/kernel/drivers/video/uvesafb.ko
description: Framebuffer driver for VBE2.0+ compliant graphics boards
author: Michal Januszewski <spock@gentoo.org>
license: GPL
srcversion: 21EDEFDED06E0673208A0D5
depends:
vermagic: 2.6.27-7-server SMP mod_unload modversions
parm: scroll:Scrolling mode, set to 'redraw', 'ypan', or 'ywrap' (scroll)
parm: vgapal:Set palette using VGA registers (invbool)
parm: pmipal:Set palette using PMI calls (bool)
parm: mtrr:Memory Type Range Registers setting. Use 0 to disable. (uint)
parm: blank:Enable hardware blanking (bool)
parm: nocrtc:Ignore CRTC timings when setting modes (bool)
parm: noedid:Ignore EDID-provided monitor limits when setting modes (bool)
parm: vram_remap:Set amount of video memory to be used [MiB] (uint)
parm: vram_total:Set total amount of video memoery [MiB] (uint)
parm: maxclk:Maximum pixelclock [MHz], overrides EDID data (ushort)
parm: maxhf:Maximum horizontal frequency [kHz], overrides EDID data (ushort)
parm: maxvf:Maximum vertical frequency [Hz], overrides EDID data (ushort)
parm: mode_option:Specify initial video mode as "<xres>x<yres>[-<bpp>][@<refresh>]" (charp)
parm: vbemode:VBE mode number to set, overrides the 'mode' option (ushort)
parm: v86d:Path to the v86d userspace helper. (string)
root@intrepid:~# LANG=C apt-cache policy v86d
v86d:
Installed: 0.1.5-1ubuntu2
Candidate: 0.1.5-1ubuntu2
Version table:
*** 0.1.5-1ubuntu2 0
500 http://tw.archive.ubuntu.com intrepid/universe Packages
100 /var/lib/dpkg/status
root@intrepid:~# LANG=C apt-cache policy jfbterm
jfbterm:
Installed: 0.4.7-7.2
Candidate: 0.4.7-7.2
Version table:
*** 0.4.7-7.2 0
500 http://tw.archive.ubuntu.com intrepid/universe Packages
100 /var/lib/dpkg/status
- 追蹤 jfbterm 的 deb package 原始碼
root@intrepid:~# apt-get source jfbterm
root@intrepid:~# apt-get build-dep jfbterm
- uvesafb 作者的推測:
As to why the console becomes unresponsive after exiting jfbterm --
jfbterm sets KD_GRAPHICS mode on the console on which it is started,
and apparently fails to set it back to KD_TEXT before segfaulting. This
leaves the console in the broken state.
