On Wednesday 26 April 2006 02:18pm, Leszek Matok wrote: > Dnia 26-04-2006, śro o godzinie 13:15 -0600, Lamont R. Peterson > > napisał(a): > > You had 1021 sockets. > > Plus 3 other open descriptors (stdin, stdout, stderr), which make 1024. Yes, as I pointed out in the other email in this thread, which is why I didn't elaborate here. Sorry for any confusion. > As root you can type: limit descriptors 1048576 which is the hard limit > for root under FC5. Where do you put that? There is no "limit" command and ulimit doesn't accept "descriptors" as a parameter. > But even as root I get the soft limit set to 1024 > when I do su - by default. > Maybe the discussion grandparent was running > a program which uses 3 open descriptors for every connection (separate > logfiles for every connection, probably? Separate "control" and "data" > connections, as in FTP?) and on another distro he was getting bigger > default soft limit for root? Good theory (see my other post). But I don't know the answer. > Now my question. It's impossible to make 5000 connections as user under > Fedora. Can I change it? I thought it's controlled by #define OPEN_MAX > in kernel source (I guess it means files not file descriptors then), but > kernel-devel's limit.h has OPEN_MAX set to 256 and everyone here > confirms the limit is truly 1024, which is fs.h's INR_OPEN (and root's > hard limit is NR_OPEN). Does that mean the 1024 open connections are > kernel maximum changed only at compile time and there's no sysctl for > it? Ah, the $64,000 question. So far, in just glancing through /proc/sys/, I didn't find a sysctl for it. Would be nice. But from your paragraph, I wonder if it's actually fs.h that sets the "soft limit" to begin with. I'd certainly like to know the answer, too. BTW: With 1GB RAM minimum on all my notebooks and workstations (and on a couple of my personal servers), it wouldn't bother me to increase that default to 5120 or 10240 even. Of course, that change could require a much more in depth conversation. -- Lamont R. Peterson <lamont@xxxxxxxxxxxx> Senior Instructor Guru Labs, L.C. [ http://www.GuruLabs.com/ ] GPG Key fingerprint: F98C E31A 5C4C 834A BCAB 8CB3 F980 6C97 DC0D D409
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