Re: [Haifux] lecture suggestion: disk storage media - state of the art in the enterprise world
I'd be interested. Probably have some relevant knowledge on the topic myself. Baruch On Wed, Apr 4, 2012 at 10:22 AM, guy keren c...@actcom.co.il wrote: this is a: 1. very detailed-oriented talk. 2. no prior knowledge required. 3. not specific to linux. 4. not useful for home users - it all concentrates on enterprise systems. 5. second-hand knowledge (i.e. a lot of someone told me and i heard that... claims will be involved). 6. not going to talk about the internals of SSDs - but rather on their machine interfaces. 7. will cover hard disks, SSDs (Solid-State Disks) and the way they are/will be used in enterprise computing environments. if there's interest - it'll take me a few weeks to prepare. --guy ___ Haifux mailing list Haifux@haifux.org http://hamakor.org.il/cgi-bin/mailman/listinfo/haifux ___ Haifux mailing list Haifux@haifux.org http://hamakor.org.il/cgi-bin/mailman/listinfo/haifux
Re: [Haifux] Running 32 bit applications (Firefox?) on 64 bit machines
At least in Debian you can install an x86 32 bit arch and later on install a 64 bit kernel to get what you want. All apps will be 32 bit but the kernel will run in 64 bits. There are moves underfoot to make Debian multiarch enabled and then you'll be able to run 32 bit and 64 bit apps on the same machine and decide for yourself which subset should run on how many bits. Baruch On Sat, Aug 20, 2011 at 7:32 PM, Eli Billauer e...@billauer.co.il wrote: Hi, It has suddenly hit me, that there's no apparent reason to run most executables as 64 bits on a x86_64 machine. I mean, what for? It's not like I expect Firefox to address 1 GB of RAM. If it does, let it crash. On the other hand, plugins and other binaries for 64 bits is a headache. Flash player tops the list, I suppose. So it really makes me wonder: Why are the preinstalled binaries on a 64 bit machine, well, 64 bit executables? I run a 64 bit machine because I want the *overall* RAM to exceed 4 GB, but except for virtual machines, I don't expect any application to have problems with the 32 bit limitation. Insights? Eli P.S. Just changed my Firefox to 32 bits. Had to install some libraries manually to get Flash Player going: yum install libpk-gtk-module.so libcanberra-gtk-module.so libcurl.i686 (thanks goes to strace as usual). -- Web: http://www.billauer.co.il __**_ Haifux mailing list Haifux@haifux.org http://hamakor.org.il/cgi-bin/**mailman/listinfo/haifuxhttp://hamakor.org.il/cgi-bin/mailman/listinfo/haifux ___ Haifux mailing list Haifux@haifux.org http://hamakor.org.il/cgi-bin/mailman/listinfo/haifux
[Haifux] (sort of) presentation offer
Hi, I now have lots of free time on my hands and thought that I can offer to present my (mostly obsolete by now) work on TCP performance improvements to the Linux Kernel, I can also do a presentation on high speed performance of TCP and the various variants that were proposed and implemented. But (there always have to be a but) I have to be back home early to release the nanny and take care of my twins so I can only do an early presentation, any time between 10:30 to 16:00 would work for me. But this is a non-standard time for Haifux. Cheers, Baruch ___ Haifux mailing list Haifux@haifux.org http://hamakor.org.il/cgi-bin/mailman/listinfo/haifux
Re: [Haifux] A bit of help regarding my upcoming lecture
* Shai Shkolnitsky [EMAIL PROTECTED] [061127 10:59]:
I have found some important thing regarding my upcoming lecture, that would
help expand it a bit (And maybe make it interesting for non SiL guys). Yet,
with all the inconsistencies between the distributions I want to make sure
if that kind of thing is at all valid.
If you would be so kind as to check whether the following files exist on
your system as well, I would be really grateful.
/usr/lib/cron/run-crons
/etc/sysconfig/cron
And one more thing, if you have spare time. Please search a dir named
crontabs or cron/tabs, possibly in /var/spool/ (Permission to the parent
directory might be privileged).
Please send me your findings with a distribution and version.
Debian etch (the upcoming 4.0)
None of the two directories are there, there is /var/spool/cron/crontabs
as well as /var/spool/cron/{atjobs,atspool}
The cron config in Debian is at:
/etc/crontab (file)
/etc/cron.hourly (dir)
/etc/cron.daily (dir)
/etc/cron.weekly (dir)
/etc/cron.monthly (dir)
/etc/cron.d (dir)
he /etc/crontab file is the root one and runs the
hourly/daily/weekly/monthly jobs. It uses the system cron format that
includes the user which the command should be run as.
The /etc/cron.* are directories where scripts are deposited by packages
or the user and are run at the specified interval. The exact time is
specified by /etc/crontab
/etc/cron.d is a directory where packages and admins can put their own
system crontab formatted files and cron will run them as specified.
This whole arrangement is made so that packages can easily add their own
cron jobs without the need to parse and edit the system cron files, just
add a file and you're done, remove the file on uninstall and everything
just works (or stops worknig in this case).
This is pertty much standard Debian behaviour and should be the same in
Debian sarge (the current stable) and most likely even before that as
well.
Cheers,
Baruch
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Re: [Haifux] vim was so nice
Orna Agmon wrote: Hi All, My system was recently updated from Red Hat Enterprize 3 to RHE4, this update including an updated of vim, from 6.1.320 to 6.3.82. Now, with the new vim, many nice features were lost: *syntax highlighting *automatically viewing gzip compressed files *directory browsing *remembering the last search string *remembering, for each file, the line I was at. Make sure you start vim as vim and not vi, when started as vi it starts in a vi compatible mode which makes for hours of fun. (ok, a few seconds only, after which you do ESC:q) Another poster said the defaults for vim changed between RHE3 and 4 you might want to find an existing install of RHE3 and revive the config from it to get full benefits of the old config. Alternatively you can find the commands for the various features and add them to your very own .vimrc First you can do: set nocompatible *syntax highlighting syntax on *automatically viewing gzip compressed files In my debian vim there is a gzip plugin, It's a bit too large for the mailing list, you can find the package source at http://packages.debian.org/testing/editors/vim-runtime *remembering the last search string set history=50 keep 50 lines of command line history *remembering, for each file, the line I was at. set viminfo='20,\50 read/write a .viminfo file, don't store more than 50 lines of registers -- Haifa Linux Club Mailing List (http://www.haifux.org) To unsub send an empty message to [EMAIL PROTECTED]
Re: [Haifux] W2L meeting
Adir Abraham wrote: 2. Distro - which distro to work with? If nobody is against - let me do the final decision like last year. I'll dig my email from last year, giving the exact requests, etc. The more people who join the effort and say how a specific distribution is good for a *beginner* user, we will have a better choice. Please seperate in your mind between a distribution that you love, and between a distribution that fits to a beginner and a beginner would love to: install, try, have no hard work. Assume that the person IS technically-challenge (or real-life non-challenged? :), and simply wants to install everything, as easy as possible. I'll give a list of up-to-date distros later. You could consider an installation of Debian-Hebrew, it is a very simple installation, providing a fully Hebrew system based on the Gnome desktop with a full set of applications. It should also be possible to produce a special version for an InstaParty with a choice of software for your needs. Baruch -- Haifa Linux Club Mailing List (http://www.haifux.org) To unsub send an empty message to [EMAIL PROTECTED]
Re: [Haifux] Spamassassin 3.0.x -- worth the upgrade?
Eli Billauer wrote: Hello all, I'm still using version 2.63 of spamassassin, and I now saw that 3.0.4 is out. I'm using it for filtering my private mail, so it's not like I need some corporate-scale features. So those of you who are already using versions 3.0.x: Is there any significant change making an upgrade worthy? I simply don't want to play with a stable setup which deals with my communication with the world... I've upgraded mine to 3.0.3 (Debian Stable), and there was some reduction in spam, not something big though so unless you have floods of spam escaping the assassin I wouldn't bother with it. The one thing I did do and made my life so much better is grey-listing, it's a controversial method, but for now it just works. The idea is that you disallow the first mail and wait for a retry after 5 minutes or so, you allow the retry. Legitimate mail is allowed while spam which is not retried is dropped. For identification of an e-mail it uses the triplet of sender-receiver-smtpIP. I'm using postgrey and it has auto-learn so after a few successful passes a mail server is cleared for retransmit bypassing the grey listing. Installation on Debian Stable is easy enough, a simple change to the postfix setup and you're done (after apt-get install postgrey). It works for me but YMMV. Baruch -- Haifa Linux Club Mailing List (http://www.haifux.org) To unsub send an empty message to [EMAIL PROTECTED]
Re: [Haifux] ACPI on IBM R40
Mark Silberstein wrote: Hi, If anyone knows what can be done to make ACPI not draining battery when in the suspend-to-RAM, I would be very much obliged. Suspend to ram will always drain batteries since the ram requires energy to be kept alive. Maybe you want suspend to disk? Baruch -- Haifa Linux Club Mailing List (http://www.haifux.org) To unsub send an empty message to [EMAIL PROTECTED]
Re: [Haifux] ACPI on IBM R40
Mark Silberstein wrote: Thanks for prompt reply. I should have stressed that I'm talking about UNUSUAL draining - as opposed to APM sleep I used in 2.4. My battery is over in 10 hours, while previously it was at least 4-5 days. You might want to look in Google regarding the sleep mode you can put the machine into and how. CPUs have several sleep modes, some are better at saving energy than others, though I know no details on this more than that. Maybe some other learned Kernel hacker will know more, I've been dealing too much with networking and too little with other areas. Baruch -- Haifa Linux Club Mailing List (http://www.haifux.org) To unsub send an empty message to [EMAIL PROTECTED]
Re: [Haifux] ipc
yakoub abaya wrote: what is the difference between two processes communicating through a normal file discriptor and a fifo pipe discriptor ? [Transfer by a fifo vs. a shared file] The difference is that the file is stored in the filesystem, and if the processes have a lot to talk about it is wasteful of filesystem space. The blocking part is convenience and simplicity as well, how will the shared file reader know when the other side has some new data in the file? It requires polling and is not efficient in OS resources. A fifo also has semantics that help you, such as atomicity of operations (up to some size of a message) and synchronization of work, the blocking gives you synchronization since the second process won't wake up (and won't waste OS time) until it has data to work on. Baruch -- Haifa Linux Club Mailing List (http://www.haifux.org) To unsub send an empty message to [EMAIL PROTECTED]
[Haifux] Lecture offers
Hello, I thought to offer my (free) services to provide a lecture on various topics. 1. GnuCash and personal accounting for Israelis 2. TCP and network congestion handling 3. Firewall internals (no concrete idea here, open to questions that need answering). I'd like to know if there is interest in these topics (or other similar topics). Baruch -- Haifa Linux Club Mailing List (http://www.haifux.org) To unsub send an empty message to [EMAIL PROTECTED]
Re: [Haifux] Lecture offers
* Muli Ben-Yehuda [EMAIL PROTECTED] [040312 15:36]: On Fri, Mar 12, 2004 at 09:55:35AM +0200, Baruch Even wrote: 1. GnuCash and personal accounting for Israelis Yes please I'm not an expert accountant, I can speak from my experience on what worked and what I do, which works for me. I'd like to know if there is interest in these topics (or other similar topics). ISTR you were (still are?) Still are for both, depending on what you consider interesting in b :-) a) a debian maintainer (maybe you'd like to talk about that) I could do some talk about Debian, though I wouldn't know what specifics could interest the peoples. b) doing fairly interesting Linux related work Most of my work was in Firewall implementation, and very low level networking testing appliances. Maybe you'd like to talk about either of the above? I'd be happy to talk about anything for which there is a listening crowd, hopefully I'll also know a bit about the subject to have something meaningful and new to say. Baruch -- Haifa Linux Club Mailing List (http://www.haifux.org) To unsub send an empty message to [EMAIL PROTECTED]
Re: [Haifux] Re: sms in israel
* Shlomi Fish [EMAIL PROTECTED] [040101 18:28]:
On Wed, 31 Dec 2003, Nadav Har'El wrote:
On Tue, Dec 30, 2003, Gustavo Halperin wrote about Re: [Haifux] sms in israel:
The script does not find the file Encode.pm, that is in the directory
usr/share/perl5/Mail/Message/Body/
It appears that the Encode stuff is perhaps available only in Perl 5.8, and
It is actually possible to try to load Encode and if it fails, just
perform something else or define a decode/encode function that does
nothing.
Something like that should do it (taken from my WebSec program):
eval { load Compress::Zlib; } or $feature_compress=0;
Baruch
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Re: [Haifux] Errors when Compiling 2.4.22 with modules
* Orna Agmon [EMAIL PROTECTED] [031123 20:49]: I am forwarding a question on behalf of yacoub, since I did not know what to do about it: -- I'm trying to install kernel 2.4.22 , but I have the following failure: mouting the filesystem fails at boot , i have NTFS /ext3 partitions , so i configured modules support for NTFS,ext3,dos...and automounter several boots lead to irrecuvarable errors , and i have to reinstall Mandrake from CD when i do make module i get warnings : inode.c:1720: warning: concatenation of string literals with __FUNCTION__ is deprecated The warnings are harmless and can't lead to any problem of corruption. The NTFS drivers are considered beta (if not alpha) and are expected to work for read-only operation. Write operation is considered dangerous to your health. What is strange is that the Linux partition is corrupted and not the NTFS one(s). What sort of errors did you get before you had to reinstall? Baruch -- Haifa Linux Club Mailing List (http://www.haifux.org) To unsub send an empty message to [EMAIL PROTECTED]
