Erik, That doesn't explain anything. More of the same that I found in man page. What is swap allocated in physical memory? I have hard time wrapping my arms around that. Is it something like swap cache in Linux? If its disk-backed, where is the actual location of the backing store?
And the numbers? 473164k is not same as 256MB as per the table in that page. If you can explain the individual numbers and how they add up across 'swap -s', 'swap -l' and 'top -b', that would be great! -devsk ________________________________ From: Erik Trimble <erik.trim...@oracle.com> Cc: devsk <funt...@yahoo.com>; zfs-discuss@opensolaris.org Sent: Wed, June 9, 2010 7:41:22 PM Subject: Re: [zfs-discuss] swap - where is it coming from? On 6/9/2010 7:20 PM, Greg Eanes wrote: > On Wed, Jun 9, 2010 at 8:17 PM, devsk<funt...@yahoo.com> wrote: > >> $ swap -s >> total: 473164k bytes allocated + 388916k reserved = 862080k used, 6062060k >> available >> >> $ swap -l >> swapfile dev swaplo blocks free >> /dev/dsk/c6t0d0s1 215,1 8 12594952 12594952 >> >> Can someone please do the math for me here? I am not able to figure the >> total. >> >> What is "473164k bytes allocated"? Where is it allocated? In some hidden zfs >> swap FS in my root pool? >> What's the magic behind the number 473164k? >> What is "388916k reserved"? >> 862080k+6062060k != 12594952/2 - So, where did the rest of it come from? I >> just configured one device in /etc/vfstab. >> -- >> > > man swap > > " These numbers include swap space from all configured > swap areas as listed by the -l option, as well swap > space in the form of physical memory." > This is also a reasonable explanation of what the output of 'swap -s' actually means. http://www.softpanorama.org/Solaris/Processes_and_memory/swap_space_management.shtml Look about half-way down the page, under "Monitoring Swap Resources". The whole page is worth a read, though. -- Erik Trimble Java System Support Mailstop: usca22-123 Phone: x17195 Santa Clara, CA
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