| Subject: (2.3) AIX tips |
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Q: Is there a config.data for AIX 4.1 ? A: In <http://www.news.inet.tele.dk/config.data> you will find one for AIX 4.1.4 and INN1.5.1. If you want to use this with older INN versions, then you have to remove some lines from it. Note that it might be that in the sample CLX_STYLE is set to IOCTL. You might change this to FCNTL as described below (#2.13) if you get many overchan processes. Q: In config.data, should ACT_STYLE be set to READ or MMAP? A: Gee, some say MMAP works, some say it doesn't. I recommend you use READ. After you've been running for a month, try MMAP for a day and see what happens. Kurt Jaeger <Kurt.Jaeger@RUS.Uni-Stuttgart.DE> adds: On 3.2.5, MMAP works if one makes some patch to the innd so that it allocates one byte more than filelength(active) or filelength(history [or whatever is mapped by innd]). Reason: If filelength(active/whatever file) on AIX is a multiple of page size (4096 bytes), searching for a trailing NUL byte in a MMAPed file will kill the process with SEGV or the AIX equivalent. Q: What compiler should I use? A: Most people use what's listed in Install.ms, though we have one report of a AIX 3.2.5 user that found bsdcc worked better. Q: When I run news.daily, there's always a few lines of error messages at the end of the output: | compress: bad file numberA: AIX /usr/bin/compress has a bug when compressing files with zero length. Then it spits out this error. Solution: Ignore it or use a different compress program and change config.data accordingly. (from Kurt Jaeger <pi@rus.uni-stuttgart.de>) Q: innwatch doesn't work well from /etc/inittab, does it? A: Nope. Instead, you can create a "subsystem" with this command: mkssys -s innwatch -p /usr/local/news/bin/innwatch \
-u `id -u news` -G news -S -n 15 -f 9
Note that your path to innwatch may differ, depending on where youdecided to install the inn components. You also need to enter the command as one long line. This will create a subsystem named "innwatch" belonging to an SRC group named "news". The "-S" means that it uses signals for SRC to tell it when to stop and the "-n" is the SIGTERM signal, for normal shutdown, and the "-f" is the SIGKILL signal, which is sent if the process does not stop within 20 seconds. Then, modify rc.news to issue the command startsrc -s innwatchto get innwatch going. That's it! Shane Castle <swcxt@boco.co.gov, swcxt@csn.org> Q: When I compile I get something like: 0706-317 ERROR: Unresolved or undefined symbols detected:
Symbols in error (followed by references) are
dumped to the load map.
The -bloadmap:<filename> option will create a load map.
.dbzwrit
cd frontends ; make all ; cd ..
Target all is up to date.
A: That means you don't have a program called "patch" installed onyour machine. Refer to "Subject: ld.so: Undefined symbol: _dbzwritethrough" Q: What can I change in innwatch.ctl to make it work right? A: The "df" command in AIX has a funny output that requires you to modify innwatch.ctl. The FTP site has an install.ctl that uses "df -i" (some AIX versions) and another one that uses "df -v" (recommended by someone with AIX 3.2.5). Q: Can I use a compressed filesystem? A: (From Kurt Jaeger): On AIX 4.1.x, use compressed filesystems with 512 bytes per fragment and 2048 bytes per inode. This is the best space optimazation I could find up to now. News is I/O bound, so doing some more compression to save on head seeks and reads will better balance your system. I currently have a 100/60% yield: If the disk would be 100% full, 60% of the inodes would be used. ------------------------------ [Last Changed: $Date: 1997/09/23 01:25:52 $ $Revision: 2.34 $] [Copyright: 1997 Heiko Rupp, portions by Tom Limoncelli, Rich Salz, et al.] |