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Advance Member
  
加入日期: Feb 2000 您的住址: 敗家天堂PCDVD
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嗯嗯 OK 我回去再PO成績給大家看看
打算來敗一張Intel PCIE 的Gigabit網卡給桌機 然後再買一張Intel PCI的Gigabit網卡給準系統 然後再買一張VIA的便宜Gigabit網卡來交叉測試
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2006-09-15, 05:46 PM
#41
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Elite Member
加入日期: Oct 2002
文章: 4,800
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家中測試
兩邊一樣是intel pro/1000 GT 中間串兩個giga switch (lantech/ZyXEL) 五年前佈的Cat.5E線路總長超越30米 (樓上啪到樓下那段是直接露天明線) 結果是可憐的381M 原因是整個cabling system太鳥了
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人性的醜陋就是，會在無權、無勢、善良的人身上挑毛病，卻在有權、有勢、缺德的人身上找優點。當無權、無勢、善良的人受到傷害的時候，還會站在所謂的道德制高點上，假惺惺地勸說無權、無勢、善良的人，一定要忍耐，一定要大度。 |
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2006-09-15, 07:45 PM
#42
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Regular Member
 加入日期: Sep 2001
文章: 59
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引用:
是的, 執行sync可將還在記憶體中的資料寫回硬碟 而小弟指的是在/etc/fstab掛載磁區時, 下的參數 如果有下sync, 則磁碟與記憶體中的資料會以同步寫入的方式動作(系統預設為async), 檢查方法為, # mount 查看就可以了 |
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2006-09-15, 08:58 PM
#43
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Advance Member
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引用:
我檢查了之後，發現都沒有說，底下的情況是怎樣阿 root@justin-desktop:/home/justin# mount /dev/hda1 on / type ext3 (rw,errors=remount-ro) proc on /proc type proc (rw) /sys on /sys type sysfs (rw) varrun on /var/run type tmpfs (rw) varlock on /var/lock type tmpfs (rw) procbususb on /proc/bus/usb type usbfs (rw) udev on /dev type tmpfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) devshm on /dev/shm type tmpfs (rw) lrm on /lib/modules/2.6.15-26-386/volatile type tmpfs (rw)
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2006-09-15, 11:13 PM
#44
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我的更濫，桌機(內建Marvel 88E8053)傳到準系統(螃蟹8169s) 只有347Mbits/sec，唉!真的是該換了，真是濫到爆的Gigabit級網路
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2006-09-15, 11:18 PM
#45
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剛剛用了小弟兩年前買的筆電內附的Broadcom Gigabit網卡，更新驅動前的成績是570Mbit/s
更新驅動後的成績是 660Mbit/s，真的是讓我... 桌機跟額外買的網卡竟然比不上筆電內附的><
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2006-09-16, 08:27 PM
#46
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*停權中*
加入日期: Dec 2005
文章: 58
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單純一點用封包測吧，提供一個小軟體。
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2006-09-16, 09:00 PM
#47
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Elite Member
加入日期: May 2002 您的住址: 板橋
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鵝來貼個linux下的測試結果好了
 ...BTW,測試環境是以約2m的CAT5e直接對接,client是S754的Sempron2500+1GB DDR400+PCI-E 88E8053,server是AM2的Sempron3000+2GB DDRII667+MCP51內建的GbE(PHY也是Marvell的),沒開Jumbo Frame(因為linux不知為何沒辦法開off loading及Jumbo Frame等功能 )....只開一個connection,88E8053 default有開offloading時 root@lab01:~# ethtool -k eth0 Offload parameters for eth0: rx-checksumming: on tx-checksumming: on scatter-gather: on tcp segmentation offload: on root@lab01:~# time iperf -c 192.168.1.115 ------------------------------------------------------------ Client connecting to 192.168.1.115, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 5] local 192.168.1.110 port 56285 connected with 192.168.1.115 port 5001 [ 5] 0.0-10.0 sec 1.09 GBytes 938 Mbits/sec real 0m10.035s user 0m0.064s sys 0m2.008s throughput約938Mbps,CPU loading約20%.... 同上,關閉所有off loading.... root@lab01:~# ethtool -k eth0 Offload parameters for eth0: rx-checksumming: off tx-checksumming: off scatter-gather: off tcp segmentation offload: off root@lab01:~# time iperf -c 192.168.1.115 ------------------------------------------------------------ Client connecting to 192.168.1.115, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 5] local 192.168.1.110 port 56286 connected with 192.168.1.115 port 5001 [ 5] 0.0-10.0 sec 998 MBytes 837 Mbits/sec real 0m10.020s user 0m0.044s sys 0m3.308s throughput下降約10%,CPU loading由20%上升到33%(約60%).... 重新打開所有off loading,開10個connection.... root@lab01:~# ethtool -k eth0 Offload parameters for eth0: rx-checksumming: on tx-checksumming: on scatter-gather: on tcp segmentation offload: on root@lab01:~# time iperf -c 192.168.1.115 -P10 ------------------------------------------------------------ Client connecting to 192.168.1.115, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 5] local 192.168.1.110 port 36511 connected with 192.168.1.115 port 5001 [ 6] local 192.168.1.110 port 36512 connected with 192.168.1.115 port 5001 [ 7] local 192.168.1.110 port 36513 connected with 192.168.1.115 port 5001 [ 8] local 192.168.1.110 port 36514 connected with 192.168.1.115 port 5001 [ 9] local 192.168.1.110 port 36515 connected with 192.168.1.115 port 5001 [ 14] local 192.168.1.110 port 36520 connected with 192.168.1.115 port 5001 [ 10] local 192.168.1.110 port 36516 connected with 192.168.1.115 port 5001 [ 11] local 192.168.1.110 port 36517 connected with 192.168.1.115 port 5001 [ 12] local 192.168.1.110 port 36518 connected with 192.168.1.115 port 5001 [ 13] local 192.168.1.110 port 36519 connected with 192.168.1.115 port 5001 [ 5] 0.0-10.0 sec 113 MBytes 94.8 Mbits/sec [ 6] 0.0-10.0 sec 113 MBytes 94.7 Mbits/sec [ 7] 0.0-10.0 sec 113 MBytes 94.7 Mbits/sec [ 9] 0.0-10.0 sec 112 MBytes 94.3 Mbits/sec [ 10] 0.0-10.0 sec 112 MBytes 93.7 Mbits/sec [ 8] 0.0-10.0 sec 113 MBytes 94.6 Mbits/sec [ 14] 0.0-10.0 sec 112 MBytes 94.0 Mbits/sec [ 11] 0.0-10.0 sec 112 MBytes 93.9 Mbits/sec [ 13] 0.0-10.0 sec 112 MBytes 93.8 Mbits/sec [ 12] 0.0-10.0 sec 112 MBytes 93.8 Mbits/sec [SUM] 0.0-10.0 sec 1.10 GBytes 939 Mbits/sec real 0m10.086s user 0m0.080s sys 0m2.044s CPU loading及throughput都與開一個connection時約略相當.... 同上,關閉所有off loading.... root@lab01:~# ethtool -k eth0 Offload parameters for eth0: rx-checksumming: off tx-checksumming: off scatter-gather: off tcp segmentation offload: off root@lab01:~# time iperf -c 192.168.1.115 -P10 ------------------------------------------------------------ Client connecting to 192.168.1.115, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 14] local 192.168.1.110 port 58168 connected with 192.168.1.115 port 5001 [ 5] local 192.168.1.110 port 58159 connected with 192.168.1.115 port 5001 [ 6] local 192.168.1.110 port 58160 connected with 192.168.1.115 port 5001 [ 7] local 192.168.1.110 port 58161 connected with 192.168.1.115 port 5001 [ 8] local 192.168.1.110 port 58162 connected with 192.168.1.115 port 5001 [ 9] local 192.168.1.110 port 58163 connected with 192.168.1.115 port 5001 [ 10] local 192.168.1.110 port 58164 connected with 192.168.1.115 port 5001 [ 11] local 192.168.1.110 port 58165 connected with 192.168.1.115 port 5001 [ 12] local 192.168.1.110 port 58166 connected with 192.168.1.115 port 5001 [ 13] local 192.168.1.110 port 58167 connected with 192.168.1.115 port 5001 [ 6] 0.0- 7.0 sec 71.8 MBytes 86.0 Mbits/sec [ 9] 0.0- 7.0 sec 71.3 MBytes 85.4 Mbits/sec [ 11] 0.0- 7.0 sec 69.8 MBytes 83.7 Mbits/sec [ 12] 0.0- 7.0 sec 69.8 MBytes 83.6 Mbits/sec [ 5] 0.0- 7.0 sec 71.5 MBytes 85.6 Mbits/sec [ 7] 0.0- 7.0 sec 71.7 MBytes 85.8 Mbits/sec [ 8] 0.0- 7.0 sec 70.2 MBytes 83.9 Mbits/sec [ 10] 0.0- 7.0 sec 71.5 MBytes 85.5 Mbits/sec [ 13] 0.0- 7.0 sec 71.1 MBytes 85.1 Mbits/sec [ 14] 0.0-10.0 sec 372 MBytes 312 Mbits/sec [SUM] 0.0-10.0 sec 1010 MBytes 847 Mbits/sec real 0m13.027s user 0m0.068s sys 0m3.960s throughput約略與只開一個connection關off loading時相當,CPU loading由33%上升至40%(約20%).... 總結看來還不錯(吃CPU沒想像中的兇 )....BTW,鵝發現iperf在M$ Win中開的buffer(TCP win)有點小---default只有8k,不知是否是iperf win32版binary版本較舊所致,若調大時(i.e. -w 64k)對throughput有不小的助益,測試結果不理想者可以試試....
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士大夫之無恥,是謂國恥  ....
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2006-09-16, 09:06 PM
#48
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Advance Member
加入日期: Feb 2000 您的住址: 敗家天堂PCDVD
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引用:
奇怪了，為什麼鵝兄你的Marvel 88E8053就跑的那麼好 我的就這麼差呢?? 我的總輸出只有到347Mbit/sec 然後我那台linux的準系統插的螃蟹卡值也只能到350Mbit/sec左右 linux需要調整什麼才可以讓速度快一點嗎？我的桌機傳到準系統的linux 只有14MB左右的速度，但是我從準系統下載卻有27MB的速度，為什麼會不一樣呢？
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2006-09-17, 01:57 AM
#49
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Elite Member
加入日期: May 2002 您的住址: 板橋
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引用:
鵝前面提過win32版iperf的buffer(TCP window) default只有8KB,設成64KB之後throughput就好多了,除此之外鵝沒做啥特別的調校啊  ....BTW,鵝用的kernel是重新compile過的v2.6.17,也先把iptable的rule清掉了,您要不要檢查一下是不是iptable的關係(一般常見的distribution如RH/FC之類會有default的rule,iptable/firewall rule的寫法對throughput/loading會有重大的影響).....引用:
這就牽涉到真正的I/O和file system了,光由您提到有限的資訊恐怕是很難做出有意義的判斷的 .... |
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2006-09-17, 02:28 PM
#50
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