Well, you're not out of RAM, but that doesn't mean you're not "out" of swap.
Solaris does not do memory overcommit. So if a process does a malloc() call for 16 GB, the OS will reserve 16 GB of swap for that process. Even if the process never uses any of that 16 GB so that it shows up as allocated memory in the mdb ::memstat output above, it still gets reserved. Even if you've never used it.
And if that process calls fork(), the child process will get another 16 GB of swap reserved. Or not - if it's not there, the fork() could fail (I don't remember exactly what happens offhand). Or, you could wind up seeing your swap error message.
Are you seeing any types of failures in application logs, or /var/adm/messages? Generally, if you really are running out of swap you should see something there.
Hi all,
Q1) Due to application requirement, i am required to have more swap space.
Currently my swap is on a partition with 32GB.
I have another partition with 100GB, but it already has a UFS filesystem on it.
Can i just swap -d /dev/dsk/current32gb and swap -a /dev/dsk/ufs100gb ?
Will... (17 Replies)
Hello Team,
By the way of introduction, I am new member in this forum and proud too :)
Here is my questions:
In one of our Solaris Sparc v9 box, we are facing issues related to swap space. Our custom applications are using swap space even though physical memory is available.
From some... (3 Replies)
We have a SPARC system which is running on Solaris-9 and Physical memory size is 16GB.We have allocated 32GB SWAP space(2 times of physical memory).But when we use df -h command it shows following output and SWAP space size shows more than our allocated space
# df -h
Filesystem size used... (2 Replies)
Hi Guys !
I have found this problem many times that the swap space (/tmp space more precisely )of my Server becomes full specially when i run a complete back up of the server .
once the /tmp space is full I am not able to run simple commands as i get error like :
fork no space
on... (4 Replies)
Hi Guys !
I have found this problem many times that the swap space (/tmp space more precisely )of my Server becomes full specially when i run a complete back up of the server .
once the /tmp space is full I am not able to run simple commands as i get error like :
fork no space
on... (6 Replies)
Hi all
Got myself in a pickle here, chasing my own tail and am confused. Im trying to work out memory / swap on my solaris 10 server, that Im using zones on.
Server A has 32Gb of raw memory, ZFS across the root /mirror drives.
# prtdiag -v | grep mem = Memory size: 32768 Megabytes
#... (1 Reply)
I have a machine: SunOS <server> 5.9 Generic_117171-15 sun4u sparc SUNW,Sun-Fire-480R
It has these filesystems:
Filesystem size used avail capacity Mounted on
/dev/md/dsk/d0 19G 15G 3.9G 80% /
/proc 0K 0K 0K 0% /proc... (6 Replies)
Hi,
I have a solaris 9-sparc box, which after bouncing is giving swap space related error messages(that swap space is not enough). could it be possible that there was some command issued or setting made before bouncing, which was lost after bouncing? please let me know how i can add swap space... (1 Reply)
I just finished installing Solaris 2.6 and several applications just to realize that I made a bonehead mistake during the install. When setting up the filesystems, I entered /tmp and no swap! Is it possible to permanantly declare the entire /tmp partition as swap? I am guessing an entry in the... (4 Replies)
06-26-2014
