Linuxers September 2001

linuxers@mm.ilug-bom.org.in

73 participants
154 discussions

Re: [ILUG-BOM] Threads on Linux
by aditya newalkar 08 Sep '01

08 Sep '01

Hi, Threads on Linux are a lot different from other OSes. 1) Linux threads are NOT kernel level threads but user level threads. That means while the thread is running in a multithreaded program, the kernel DOES NOT know whether a process is running or a thread is running. 2) Though linux supports a lot of mechanisms absolutely essential for multithreaded mechanisms like mutexes, spin locks; it still has a lot of problems as far as porting of multithreaded applications to Linux is concerned. 3) While other TRUE UNIXes like SUN SOLARIS, DEC UNIX, HPUX have support for recognizing mutexes across the process boundries, becoz of the abv mentioned limitations, Linux cannot recognize them. So multithreaded multiprocessing application written for Solaris might not compile on Linux. 4) SOme pointers on Linux threads: go to redhat.com and give query "PORTING SOLARIS THREADS". There are some nice white papers published which describe the limitations of Linux threads. --- Manish Jethani <cruisecoder(a)yahoo.com> wrote: > What's the bad thing about threads on Linux? How is > multi-threading on Linux different from other OSes? > > Tnx. > > Manish > > -- > A billion here, a billion there -- pretty soon it > adds > up to real money. > -- Sen. Everett Dirksen, on the U.S. defense budget > > > _______________________________________________ > Next Online IRC LUG Meet on 31st Aug @ 4:30pm > http://mm.ilug-bom.org.in/mailman/listinfo/linuxers > ===== rgds, Aditya N. ---------------------- Junior Research Fellow, Department of Computer Science & Engineering, Indian Institute of Technology, Powai, Mumbai, 400076. __________________________________________________ Do You Yahoo!? Get email alerts & NEW webcam video instant messaging with Yahoo! Messenger http://im.yahoo.com

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Debian CDs
by Ashish Kulkarni 08 Sep '01

08 Sep '01

Hi, Does anyone have Debian CDs? I am unable to obtain the CDs from anyone I know, hence the request. Thanks Ashish

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Re: Re: [ILUG-BOM] locale settings
by Fart Crimson 08 Sep '01

08 Sep '01

Sameer asked : > Well, such directory does not exist in Debian. I had to specify the > settings in /etc/environment, then logout and login again. That put the > correct locale settings. Is there any way of doing this without logging > out of the current session? just do "source .bashrc" or ". .bashrc" ^ notice the dot! Fart

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Kernel 2.4.9 and X
by Philip S Tellis 08 Sep '01

08 Sep '01

I have kernel 2.4.7 and 2.4.9, XFree86-4.0.3 Under 2.4.7, X runs perfectly, under 2.4.9, it refuses to start up, giving me a DMA allocation error. I get errors like this in my kernel log files: i810_ioremapfree:mappings] *ERROR* Attempt to free NULL pointer i810_ioremapfree:mappings] *ERROR* Excess frees: 153 frees, 2 allocs Absolutely no problems in 2.4.7. The only difference in kernel configs is that ftpfs is enabled in 2.4.9, but module sizes are very different in the two kernels. Ideas? Philip -- "Religion is something left over from the infancy of our intelligence, it will fade away as we adopt reason and science as our guidelines." -- Bertrand Russell Visit my webpage at http://www.ncst.ernet.in/~philip/ Read my writings at http://www.ncst.ernet.in/~philip/writings/ MSN philiptellis Yahoo! philiptellis AIM philiptellis ICQ 129711328

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Please Help me out
by Satpal Ramgadia 08 Sep '01

08 Sep '01

Hiee, How r u? I m a new linuxuser searching for a proper solution as soon as possible I need some help from u i installed linux7.1 pcquest linux (seawolf) on my server now i need to configure it. i need to configure it as a server. how should i configure it? i given ip address to my server 192.168.0.55 and my client is 192.168.0.45 i m able to ping other windows98 client & i can ping from my win98 clietns to linux server The details r as follows in order to understand u the problem better Domain name : linux_domain host : linux_host.linux.domain ip address of server : 192.168.0.55 ip address of win98 client : 192.168.0.45 i configured samba server but its not working previously it was showing MYGROUP in network neighbourhood but was not accessibly it was giving some error : not accessible i given name in samba server : MYGROUP if u can help me out of this problem i will be very thankful to u My problem is : i need to configure linux server with samba server or without samba server to share linux directories in windows 98 network neighbourhood i want to share linux directories from my windows98 clients Thanx Satsonic __________________________________________________ Do You Yahoo!? Get email alerts & NEW webcam video instant messaging with Yahoo! Messenger http://im.yahoo.com

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Telnet Server
by shailesh bhate 08 Sep '01

08 Sep '01

Hi guys! I just installed RHL 7.1 from the PCQ July CD. I had a "install everything" install. I created a user on the system and when I try to telnet to the m/c from Windoze, it says "Connect failed...". I then tried to telnet the m/c from the m/c itself. Same problem. I could not find inetd on the m/c. But I did find xinetd and ran it. In vain. I also tried to run telnetd, but it never ran. It said:- " telnetd: getpeername: Socket operation on non-socket " What could be the problem? Regards, Shailesh.

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Setting up a firewall
by Philip S Tellis 08 Sep '01

08 Sep '01

Check out these articles on webmonkey about setting up a linux based firewall: Setting Up a Linux Firewall on Your Network http://go.hotwired.com/webmonkey/01/31/index2a.html/20010829 IP Masquerade http://go.hotwired.com/webmonkey/99/30/index3a.html/eg20010829 A Server of Your Own http://go.hotwired.com/webmonkey/99/08/index3a.html/eg20010829 Philip -- Herb: All born in wedlock? Homer: Yeah, though the boy was a close call. Oh Brother, Where Art Thou? Visit my webpage at http://www.ncst.ernet.in/~philip/ Read my writings at http://www.ncst.ernet.in/~philip/writings/ MSN philiptellis Yahoo! philiptellis

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Gimp tutes at Geocities
by Anand 08 Sep '01

08 Sep '01

Webspace www.geocities.com/akiyer63 may be offline for some time as the data transfer rates of 3 GB / month calculated on hourly basis is being exceeded.. This is as per a mail from Geocities.com In case you have problems in accessing the site, then please try again after some time. Any inconvinience is regretted. Thanks for making the website popular. Anand

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locale settings
by Sameer D. Sahasrabuddhe 08 Sep '01

08 Sep '01

I seem to have messed up the locale settings on my machine ... here's what perl says when I try to run a script. perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "en_US.ISO-8859-9" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). Similarly any GNOME application gives the following error Gdk-WARNING **: locale not supported by C library The original error messages had reported "english" as the locale setting. While experimenting I ended up with the above strings when I stuck an alias for "english" in /etc/locale.aliases. Where do I set up my language environemt? Do I need to restart bash and all? I am using Debian unstable ... the whole thing probably started when I upgraded my glibc and other packages .. SameerDS. __________________________________________________ Do You Yahoo!? Get email alerts & NEW webcam video instant messaging with Yahoo! Messenger http://im.yahoo.com

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ip_local_deliver: bad loopback
by Satya 07 Sep '01

07 Sep '01

ip_local_deliver: bad loopback skb: PRE_ROUTING LOCAL_IN skb: pf=2 (unowned) dev=lo len=328 PROTO=17 0.0.0.0:68 255.255.255.255:67 L=328 S=0x10 I=0 F=0x0000 T=16 root This is spewed to the console. Kernel 2.4.8, everything else works fine. Note that the device is localhost and the protocol is "qotd" according to /etc/services. Why? -- Satya. <URL:http://satya.virtualave.net/> US-bound grad students! For pre-apps, see <URL:http://quickapps.cjb.net/> FREE! Email reminder service at http://satya.virtualave.net/rem.html

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Linuxers September 2001