What does echo "::memstat" | mdb -k
show? max On Aug 2, 2011, at 4:10 PM, Mister Anonyme wrote: > > Hi, > > We have a host, Solaris 10 10/08 s10s_u6wos_07b on SPARC. > > SWAP is on ZFS. > > We allocated two swap devices of 64G each, for a total of around 130G. > > Over the time, swap space usage is increasing until 96% of used: > > # zpool list > NAME SIZE USED AVAIL CAP HEALTH ALTROOT > swap_space 130G 125G 4.94G 96% ONLINE - > > # zfs list > NAME > USED AVAIL REFER MOUNTPOINT > swap_space 127G > 487M 1K none > swap_space/swapvol01 64G 2.03G > 62.4G - > swap_space/swapvol02 63G 1.02G > 62.5G - > > > ZFS parameters for swap space volume: > > # zfs get all swap_space > NAME PROPERTY VALUE SOURCE > swap_space used 127G - > swap_space available 487M - > swap_space referenced 1K - > swap_space quota none default > swap_space reservation none default > swap_space compressratio 1.00x - > [...] > > > In swap_space, I have two volumes, swapvol01 and swapvol02: > > # zfs get all swap_space/swap_space_01 > NAME PROPERTY VALUE SOURCE > swap_space/swapvol01 type volume - > swap_space/swapvol01 creation Thu Mar 11 9:22 2010 - > swap_space/swapvol01 used 64G - > swap_space/swapvol01 available 2.03G - > swap_space/swapvol01 referenced 62.4G - > swap_space/swapvol01 compressratio 1.00x - > swap_space/swapvol01 reservation none default > swap_space/swapvol01 volsize 64G - > swap_space/swapvol01 volblocksize 8K - > swap_space/swapvol01 checksum off inherited from > swap_space > swap_space/swapvol01 compression off default > swap_space/swapvol01 readonly off default > swap_space/swapvol01 shareiscsi off default > swap_space/swapvol01 copies 1 default > swap_space/swapvol01 refreservation 64G local > > > > # zfs get all swap_space/swap_space_02 > NAME PROPERTY VALUE SOURCE > swap_space/swapvol02 type volume - > swap_space/swapvol02 creation Tue Jan 18 9:14 2011 - > swap_space/swapvol02 used 63G - > swap_space/swapvol02 available 1.02G - > swap_space/swapvol02 referenced 62.5G - > swap_space/swapvol02 compressratio 1.00x - > swap_space/swapvol02 reservation none default > swap_space/swapvol02 volsize 63G - > swap_space/swapvol02 volblocksize 8K - > swap_space/swapvol02 checksum off inherited from > swap_space > swap_space/swapvol02 compression off default > swap_space/swapvol02 readonly off default > swap_space/swapvol02 shareiscsi off default > swap_space/swapvol02 copies 1 default > swap_space/swapvol02 refreservation 63G local > > > However, if we do swap -s, we have more than 54GB of free space (swap file > name is changed for confidentiality): > > # swap -s > total: 51745880k bytes allocated + 39077200k reserved = 90823080k used, > 56984152k available > > # swap -l > swapfile dev swaplo blocks free > /dev/swapvol01 256,1 16 134217712 120021888 > /dev/swapvol02 256,2 16 132120560 117956320 > > I understand that "swap -l" only show space used on those devices and "swap > -s" include physical memory AND backing store. So logically, we should see a > low usage of both swap devices ... ? > > But, /tmp, /etc/svc/volatile and /var/run directories aren't used: > > # df -h /tmp /var/run /etc/svc/volatile > Filesystem size used avail capacity Mounted on > swap 54G 8.8M 54G 1% /tmp > swap 54G 232K 54G 1% /var/run > swap 54G 1.6M 54G 1% /etc/svc/volatile > > We have 20 zones but no one is taking many space in those directories (cut > many lines for better reading): > > # for i in `zoneadm list |grep -v global`; do zlogin $i df -h /tmp; done > Filesystem size used avail capacity Mounted on > swap 55G 275M 54G 1% /tmp > swap 55G 270M 54G 1% /tmp > swap 55G 541M 54G 1% /tmp > swap 55G 274M 54G 1% /tmp > swap 55G 215M 54G 1% /tmp > swap 55G 281M 54G 1% /tmp > swap 54G 328K 54G 1% /tmp > swap 54G 520K 54G 1% /tmp > swap 55G 541M 54G 1% /tmp > swap 56G 1.4G 54G 3% /tmp > swap 54G 576K 54G 1% /tmp > swap 54G 328K 54G 1% /tmp > swap 54G 432K 54G 1% /tmp > swap 55G 270M 54G 1% /tmp > swap 54G 40K 54G 1% /tmp > swap 54G 4.5M 54G 1% /tmp > swap 54G 8K 54G 1% /tmp > swap 54G 0K 54G 0% /tmp > swap 54G 40K 54G 1% /tmp > swap 54G 64K 54G 1% /tmp > > Any ideas? Because I'm puzzled ... ! > > Thanks! > > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
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