On Sun, 29 May 2016 01:35:47 +0100 Wols Lists <antli...@youngman.org.uk> wrote:
> On 24/05/16 11:26, Eike Rathke wrote: > > Hi YuGiOhJCJ, > > > > On Thursday, 2016-05-19 17:26:21 +0200, YuGiOhJCJ Mailing-List wrote: > > > >>> Dumb question: how much system memory is available? > >> I have 4GB of memory: > > > > That certainly is not enough and it will either grind your machine to > > heavily swap, or break the build / abort things if no swap is available. > > > >> $ free -m > >> total used free shared buffers cached > >> Mem: 3995 559 3436 0 53 330 > >> -/+ buffers/cache: 175 3819 > >> Swap: 956 0 956 > > > > > > > >>> And why are you building under /tmp/ and how much free disk space is > >>> there? > >> > >> Well, I could do it in /home but as it is a NFS share, it is slower than > >> in /tmp > > > > Ok, but as Linoel already said, using /var/tmp/ might be a better > > choice. Also, if disk space is limited under /tmp/ then building there > > may conflict with temporary files the compiler and linker create, which > > can become quite large. > > Bear in mind, the LFS says that /tmp and /var/tmp behave differently. On > a "correctly" configured system, the contents of /tmp are NOT guaranteed > to survive a system crash. Which is why /tmp is often configured as a > tmpfs. On the other hand, the contents of /var/tmp ARE guaranteed to > survive, which is why vi and emacs and that sort of program all store > their replay logs there ... > > and which is why the OP's choice of /tmp was probably correct :-) > although most distros don't seem to make the /tmp directory overly > large. (They also seem not to allocate much swap space.) > > > >> Do you think I don't have enough memory? > >> Is there a way to require less memory while building libreoffice or should > >> I buy more memory? > > > > Buy memory ;-) at least 8GB are needed, but when building with debug > > and symbols even that might result in swapping if you forgot to quit > > a previous gdb session before linking Calc for example.. 12GB or having > > a larger swap than just 1GB is recommended. > > > My rule of thumb is simple. Disk space is cheap, I allocate twice > maximum ram per disk. In other words, my desktop is maxed out at 16Gb so > the two disks each have a 32Gb swap partition. My laptop maxes out at > 8Gb so there should be a 16Gb swap partition on the drive (actually it's > 32Gb :-) > > The reason for that is - in the old days everybody said "swap should be > twice memory" which was thought to be an old wives' tale. Then kernel > 2.4 came out, and it turned out (1) that this requirement was actually > part of the swap algorithm, and (2) the optimisations and hacks and > whatever that enabled smaller swaps were a heap of old crufty rubbish. > Linus ripped out all the hacks and vanilla 2.4 kernels started crashing > everywhere they had a swapspace of less than twice ram. > > Obviously, new optimisations have gone in, presumably much better than > before, but nowhere have I found any reference to whether the > fundamental algorithm has been replaced. So I'm assuming it hasn't, and > allocate at least twice ram to ensure I get top performance. > > Which means my fstab contains the following line > > tmp /tmp tmpfs size=10G,mode=0777 0 0 > > and you'll notice the size=10G parameter, giving me a 10Gb /tmp directory. > > (I run gentoo, so /var/tmp/portage is also a tmpfs, and that's declared > at 30Gb!) > > Cheers, > Wol In my /etc/fstab file I got this line on Slackware 14.1: $ grep "tmp" /etc/fstab tmpfs /dev/shm tmpfs defaults 0 0 It is a bit different than your line in /etc/fstab but I don't know if that matters. OK, so I see three things I can do in this order: 1) Try to build libre office in an other directory than /tmp (because it is a tmpfs) and /home (because it is an NFS share) 2) Try to increase the size of my swap partition (as I have 4GB of RAM, I need a swap space of 8GB instead of 1GB) 3) Try to buy more RAM in order to get 8GB instead of 4GB _______________________________________________ LibreOffice mailing list LibreOffice@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/libreoffice
