Firstly I'd like to thank the following people - Ric Anderson Raymond Jackson Frank Fiamingo Reggie Beavers David Livingstone Gandalf el Gris Darren Dunham Rich Kulawiec Sean McKay Casper Dik Terry Moore Andrew Caines (Sorry if I have left anyone off, there were alot of you) :-) Basically we have come to the conclusion that we are running low on memory, which caused us to delve into /tmp for "virtual memory". This put a high strain on /tmp, and this is why I was seeing this change dynamically, and go up and down quite a lot with "percentage used" .... To fix the original swap problem, I ended up just rebooting. This fixed the problem and it has been good ever since. It's possible that over the pas 4 months (since the server was last rebooted) some processes may have died and not releasing memory, therefore very slowly draining our resources and adding to our problem. This is where a reboot would have been effective in clearing out any defunct processes that may have held onto some memory. After some feedback from you I decided not to go with mounting /tmp as a true disk partition, but to leave is as part of tmpfs. The main reason for this is that having /tmp mounted against swap as a tmpfs filesystem improves speed of those applications that require alot of smaller tmp files. This is more than you realise !!! What I did do though is put the following entry in vfstab to limit the amount of data that people can write to /tmp, hence clogging it up to be used for swapping - swap - /tmp tmpfs - yes size=256m I made the limit 256mb, which is an eighth of the total swap configured. The other change I made was that I added 2gb of additional swap in the form of a file. I would have preferred to have had this as physical disk, ie an additional slice of disk for swap, but we had no spare slices left. This was the command I used to add this swap file of 2gb- # mkfile 2000m /dir/swap # swap -a /dir/swap You need to run the mkfile first to create the file then use the swap -a to add the swap file. To make the change permanent to the system, add this line to /etc/vfstab /dir/swap - - swap - no - Thanks to everyone who took time out to email me their valuable opinions. It did help alot. Thanks Tis Original Post - Tis Unix <unixdocs72@yahoo.co.uk> wrote: Hi All, Just wanted your opinion on mounting /tmp as a true disk partition (instead of tmpfs, which is part of memory) .... Have many of you done this and why did you do it ? Some of you may have seen earlier posts from me, but I had alot of trouble with swap earlier, and /tmp increasing and decreasing in size alot. It has been suggested to comment out the following line in /etc/vfstab - swap - /tmp tmpfs - yes - And we currently have this in our /etc/vfstab - /dev/md/dsk/d5 - - swap - no - To mount /tmp as a disk partition would I then change this line to ? - /dev/md/dsk/d5 /dev/md/rdsk/d5 /tmp ufs yes - Thanks in adance for your help ..... Tis --------------------------------- ALL-NEW Yahoo! Messenger - sooooo many all-new ways to express yourself _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagers --------------------------------- ALL-NEW Yahoo! Messenger - sooooo many all-new ways to express yourself _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagersReceived on Wed Jun 23 11:31:39 2004
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