Messages in this thread | | | Date | Thu, 10 Apr 2008 14:51:42 +0800 | From | "Zhao Forrest" <> | Subject | Re: Does Linux have plan to support memory hole remapping? |
| |
> There is some loss of memory before MemTotal, both from the BIOS > (SMM, Frame Buffer for integrated graphics etc.) and from the kernel > (mem_map which costs a few percent and some other data structures > which are allocated early) > > I covered this in detail in http://halobates.de/memorywaste.pdf >
I read your paper, which is very helpful for us to understand the memory usage in Linux kernel. And I have a question about output of slabtop: Active / Total Objects (% used) : 730986 / 750823 (97.4%) Active / Total Slabs (% used) : 46124 / 46125 (100.0%) Active / Total Caches (% used) : 99 / 149 (66.4%) Active / Total Size (% used) : 169383.63K / 172467.11K (98.2%)
Could you please elaborate on Active / Total Caches? The meaning of other lines are obvious to me.
Thanks, Forrest
| |