Frank Li wrote:
[ ... ]
Cool! I created an additional swapfile according to its instruction. Everything is smooth. Just one thing not quite understood.

# dd if=/dev/zero of=/usr/swap0 bs=1024k count=64

It actually created a 64GB swapfile.
Hmm.  Are you certain:

12-sec# dd if=/dev/zero of=/var/cache/bar bs=1024k count=64
64+0 records in
64+0 records out
67108864 bytes transferred in 18.790176 secs (3571487 bytes/sec)
13-sec# ls -l /var/cache/bar
-rw-r--r--  1 root  wheel  67108864 Jan 16 22:44 /var/cache/bar

...since that should have created a 64 MB swapfile.

> As we knew virtual memory space on 32bit bsd cannot exceed 2GB,
> is 64GB for multiple processes/programs, or multiple users?

The 2 GB of user-addressable virtual address space is per-process.
Anyway, it sounds like you've made good progress.  (Congratulations.)


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