[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] some questions (xfrd, syslog, mem, preempt)
Hi list, i have some minor non-critical questions about xen: 1) I found one line about that obscure xfrd in the "Xen Users' manual": As xend runs, events will be logged to /var/log/ /xend.log and, if the migration assistant daemon (xfrd) has been started, /var/log/xfrd.log That's it, nothing in the FAQ. What is it? Why is it started by "xend start"? Why is it listening on 0:8002? If it is necessary, how can i bind it to localhost? If not, how can i prevent it from being started? 2) Can i configure xend to use syslog? xend.log's time- stamps have non standard format, and xend-debug.log has no timestamps at all. 3) When i create a domain configured for "memory = 64" i observe that "xm info" reports "free_memory" decreasing exactly 64MB. But "xm list" reports that the domain consumes 63MB, and /proc/meminfo even less (63136 kB). This happens allways.Is the missing RAM consumed by the Xen hypervisor? (I do not use the balloon driver, yet) Same goes for domain0: I boot with "dom0_mem=100000", that should be 100000/1024 = 97.656MB, but "xm list" reports 92MB for "Domain-0" and /proc/meminfo 94740kB, at least 5MB missing. Is the difference between the sum of all gross (or net?) domain memory footprints plus the "free_memory" and my hosts RAM the memory consumption of the Xen hypervisor/ microkernel (in my case it's 17MB)? 4) Any recommendations for CONFIG_PREEMPT and CONFIG_PRE- EMPT_BKL? Or just the same as if the kernels would run native, eg "If it runs a desktop use CONFIG_PREEMPT=y"? 5) By accident i had CONFIG_HANGCHECK_TIMER=y in my dom0. That flooded the kernel log with "Hangcheck: hangcheck value past margin!" Is that caused by the nature of Xen to pause and unpause domains all the time? /nils. -- no sig ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/xen-devel
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