On Sun, Feb 29, 2004 at 03:54:34PM +0000, Paul O'Malley wrote:
Thanks for the response.
> As you are running out of File handles then may I suggest that you have
> a look at FileCache.
> Some systems will not allow you adjust ulimit -n, that may be what is
> occurring to you.
I came across a reference to that alright.
> The fact that you want to open so many files at once scares me on a
> standard server for all users. Any glitch and bada bing -- you finish
I'm the only user. Now you're really scared. Running apache, postgres(does
nothing), sshd, cron, samba ,atd, usbmgr, xdm, xfs, mrtg every 5 mins. 2xrsync
to pull mrtg from 2 other systems. I PuTTy in from my win98se system -
normally 3 or 4 sessions. xdm only provides thin-client service.
My file-max is ~54k. That scares me. (amd1200, 512mb sdram).
file-nr indicated that only ~700 files were ever open simuntaneously.
Accordingly I don't feel that it poses a general danger to root
1 cron every hour to 'backup' my homedir with rsync. Line IIRC is
43 * * * * rsync -alqc /home/bbrazil/
Auth is hostbased with sshd. Running Woody on both systems. 100Mbps.
ls | wc -l says that there are approx 6k files in my homedir. Less the number
of files in the kernel source gives number of file to be kept up to date.
I can only assume that rsync is trying to open way too many files.
I'd be more specific only my room is some distance away and if I came back
I'd have to wait while to get a computer that can handle a ssh connection
without messing up the shift key.
> Just for laughs would you like to tell us why a new kernel is not the
> way you want to go forward here? (see last line for my reason for asking
> this question)
I build for a 166(gateway) on the same tree. It's slow enough as it is. And when
I get back to my 386 and 486... I'm unsure if this is a good reason.
> With regard to your MRTG query,
>> $default_maxbytes_directive in cfgmaker should be of greatest
No help I'm afraid. Just provides a default for MaxBytes if I don't bother to
specify it. The default behaviour of MRTG is to ignore a result if it is
greater than maxbytes. Say I want to MRTG 'lo'. I was thinking '0' might
do it but I found no reference to it on the web and that if this was so
maybe someone on the list had come across it. And I don't want to ignore
all values. Maybe I'll take a peek at the source...
Also cfgmaker seems to make what I want more difficult than it needs to
be. I'll be monitoring a lot of variables. See my next paragraph.
> Guessing on may part says with your RSYNC question based on the MRTG
> query can use an option of --bwlimit=KBPS where 0 is as much bandwidth
> as possible.
Acutally they were unrelated. In the last few hours I produced a nice
script to take iptables counters and produce output suitable for mtrg.
As it can add an arbitarily large number of counters together I can see
things getting interesting. I'll throw it up on my website next time I'm
on the net in case anyone has a use for it.
> Have lots of fun,
As if I don't enjoy this sort of thing.
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