> Running in an LPAR you are somewhat limited in that you can only use Linux > tools and the HMC displays. I do not know what monitoring packages exist for > Linux (besides top), that will give you the information that you (and we) > need to work this out. Of course under VM there are a number of choices.
top will show you process data sard will show you disk statistics providing your vendor ships that feature (look in proc/partitions and you should see stuff like.. 22 64 80043264 hdd 23376 219526 1943138 1722140 14309 266197 2244104 2311340 0 801060 4033700 ) vmstat will provide paging rate information (especially handy is vmstat 1) Sendmail defaults to stopping listening based on load average, the value it picks may be a bit low for the S/390 i/o v cpu. Look in /etc/sendmail.cf for # load average at which we just queue messages #O QueueLA=8 # load average at which we refuse connections #O RefuseLA=12 remove the comment, set values, and restart sendmail. The default sendmail tuning is fairly defensive for a small box. You can materially improve its performance, especially for stuff like mailing list work by tuning it. There are two favoured techniques for that. #1 is to get a copy of the book and/or read the sendmail faqs in full, the other is to replace it with exim, postfix or qmail 8) Alan
