Berkeley CSUA MOTD:Entry 30421
Berkeley CSUA MOTD
 
WIKI | FAQ | Tech FAQ
http://csua.com/feed/
2025/05/25 [General] UID:1000 Activity:popular
5/25    

2004/5/25-26 [Computer/HW, Computer/SW/OS] UID:30421 Activity:very high
5/25    I want to get gigabit ethernet for our network. We are currently
        running 100/10. If I upgrade my servers to run gigabit, is there a
        way to multiplex it out to 100/10 clients? Do I have to replace my
        switch?
        \_ If you want to go gigabit speeds, you will need to replace your
           switch (unless it is already 1000/100/10).  Your switch should
           then be able to multiplex a higher rate feed from your server
           to your clients.
           \_ I don't want to replace the switches since we have
              about 50 clients, but instead can I
              do the following, get a gigabit switch with say 5-10 ports,
              hook two of them to servers, and connect the rest to my
              100/10 switch? Would that at least multiplex out to N
              number of connections from the gigabit to the 100/10? I know
              I won't get optimal speeds, but at least I can get a speed boost.
              (My 100/10 switch has all RTX autodetect on all ports).
              \_ WTF are you thinking?  If you *need* GigE, you can afford to
                 get GigE.  If you can't afford it, you don't need it.  Do you
                 have some stupid cheapass PHB who wants to save a fucking
                 dime up front and pay out the ass later when this hokey shit
                 falls apart and some slave spends 30 hours debugging it while
                 half the net is down?
                 \_ I concur. If you're going to use gigabit right, get a
                    gigabit switch. It'll help you out later if you choose
                    to expand and makes dealing with possible network problems
                    much easier for everyone involved.
              \_ If you connect 1 5-10 port GigE switch to N 10/100 switches
                 the maximum bandwidth is N*100Mbit, and you will only achieve
                 that if you have a transacting client on each 10/100 switch.
                 Given that large GigE switches cost $$$, what you could do
                 is buy a 5-port GigE switch, and hook it up to some 8-16-24
                 port 10/100 switches that have a GigE uplink.  That way you
                 don't get capped by the link from the GigE switch and the
                 larger slower switches.
ERROR, url_link recursive (eces.Colorado.EDU/secure/mindterm2) 2025/05/25 [General] UID:1000 Activity:popular
5/25    

You may also be interested in these entries...
2012/8/29-11/7 [Computer/SW/Security] UID:54467 Activity:nil
8/29    There was once a CSUA web page which runs an SSH client for logging
        on to soda.  Does that page still exist?  Can someone remind me of the
        URL please?  Thx.
        \_ what do you mean? instruction on how to ssh into soda?
           \_ No I think he means the ssh applet, which, iirc, was an applet
              that implemented an ssh v1 client.  I think this page went away
	...
2012/6/27-7/27 [Computer/HW/Memory, Computer/SW/OS/OsX] UID:54424 Activity:nil
6/27    You can't put 16GB RAM in the new 13" Macbook Pro.
        Fuck you Apple!
        \_ Really?  I know they say you can't put more than 8GB in the 13"
           MBP, but I have 16GB in my 2011 13" MBP and it works perfectly.
           \_ I thought the new ones have soldier on HD and RAM just like
              the Macbook Air?
	...
2012/3/15-6/1 [Computer/SW/Languages, Computer/SW/OS/Windows] UID:54340 Activity:nil
3/15    Why does MS put double-quotes around the '8' in Windows Server 8, like
        the following?
        - Windows 8
        - Windows Server "8"
        \_ Because when they didn't do it, code didn't see the '\0'
           and went over?  Looks better than '8','\0' *shrug*
	...
2012/1/4-2/6 [Computer/HW/Drives] UID:54281 Activity:nil
1/4     I want to test how my servers behave during a disk failure and
        a RAID reconstruction so I want to simulate a hardware failure.
        How can I do this in Linux without having to physically pull
        a drive? These disks are behind a RAID card and run Linux. -ausman
        \_ According to the Linux RAID wiki, you might be able to use mdadm
           to do this with something like the following:
	...
2011/11/16-12/28 [Academia/Berkeley/CSUA, Computer/HW] UID:54230 Activity:nil
11/16   We'll be taking all CSUA machines offline in the near future for a Soda
        Hall server room reorganization (we're being moved to a neighboring
        server cabinet).  Downtime will hopefully be minimal.  --jordan
        \_ Thanks for all your work keeping the machines running!  It's
           been awesome having soda actually working again.
        \_ Update:  this is tentatively scheduled for Saturday afternoon.
	...
2011/9/14-10/25 [Computer/HW/Drives] UID:54173 Activity:nil
9/13    Thanks to Jordan, our disk server is no longer virtualized. Our long
        nightmare of poor IO performance should hopefully be over. Prepare for
        another long nightmare of poor hardware reliability!
        ...
        Just kidding! (I hope)
        In any case, this means that cooler was taken out back and shot, and
	...
2011/3/31-4/20 [Computer/SW/Languages/Python] UID:54070 Activity:nil
3/20    Has anyone here had success in using python 3.0?  Any gotchas
        to worry about? I've got an entire set of apps in python 2.x
        and am wondering if it's worth it to upgrade?
	...
2011/2/11-19 [Computer/SW/OS/Linux, Computer/SW/Security] UID:54036 Activity:nil
2/10    Debian 6.0 squeeze is the new stable.  Do we dare a dist-upgrade?
        \_ the key for http://security.debian.org has changed btw.
	...
2010/7/21-8/9 [Academia/GradSchool/MBA, Computer/SW/OS] UID:53891 Activity:nil
7/21    "How to Upgrade an Old Phone into a Porsche"
        http://www.csua.org (finance.yahoo.com)
        "Ortiz spends five to six hours each day searching Craigslist for the
        right kind of swaps. Over the last two years and 14 trades ......"
        If he just got a job and work five to six hours each day for two
        years, he would probably have earned more than enough money to buy the
	...
2010/1/22-30 [Computer/HW/Laptop, Computer/SW/OS/OsX] UID:53655 Activity:high
1/22    looking to buy a new development laptop
        needs ssdrive, >6 hr possible batt life, and runs linux reasonably
        Anyone have a recommendation? Thx.
        \_ thinkpad t23 w ssdrive and battery inplace of drive bay
        \_ Ever wondered what RICHARD STALLMAN uses for a laptop?  Well,
           wonder no more!
	...
2009/11/24-12/6 [Computer/HW] UID:53542 Activity:low
11/24   What is the best 25-32" monitor out there? I am ready to upgrade
        my 9 year old CRT. -ausman
        \_ How much money are you willing to spend, and how good do you
           really need it to be good? Are you willing to pay $900 for the
           industry standard monitor used by graphics artists, or are you
           so cheap that you'll only want to pay up $400 for something that
	...
2009/8/17-9/1 [Computer/SW/OS/Linux] UID:53274 Activity:nil
8/14    weird, Zone Alarm free seems to notice when my linux machines
        apt-get upgrade (specifically i get popups from my zafree box on
        my lan that says 'we have prevented <ip for lin box> from connecting
        to http://jackass.canonical.org (real server) ).  Weird.  I guess ZAF is in
        promisc mode?
	...