Re: weird instability
Conor Wynne <[email protected]>
| Newsgroups | gmane.user-groups.linux.ilug.general |
|---|---|
| Message-ID | <CADmO90jNc9ZuJQPEr1J2=Qm5zRsWJWZCvCPS5wOgzvYF4daF5g@mail.gmail.com> |
Try limiting the memory that the kernel can see by adding a kernel command line arg - since you're running on 32-bit albeit with PAE. On Wed, Jul 29, 2015 at 1:26 PM, Anders Holm <[email protected]> wrote: > dmesg may also show something that may point yo further, be it RAM or > other components.... > > //anders > > > On 29/07/2015 13:20, Rodrigo de Campos wrote: > > Hi Harry, > > Sounds like a RAM issue. I understand it's a remote device, but could > anyone run memtest for a while? Most ubuntu CDs will come with a preloaded > version of memtest. The last time I had those issues, that was basically a > flawed RAM stick that I had to switch to a new working one. > > I would check it before any further troubleshooting. > > Kind Regards, > Rodrigo > > On Wed, Jul 29, 2015 at 9:03 AM, Harry Duncan <[email protected]> > wrote: > >> Guys, >> >> Got a weird one that one of you might have seen before. >> >> desktop pc, corei7, 16gb ram, 64gbSSD and 1TB regular disk, running >> xubuntu with xfce desktop environment. >> >> Users tools are Firefox, Thunderbird, Virtualbox and Eclipse >> >> barely touches a gig of ram consumption when started up >> >> root@carmen:/home/carmen# uname -a >> Linux carmen 3.13.0-58-generic #97-Ubuntu SMP Wed Jul 8 02:56:50 UTC 2015 >> i686 i686 i686 GNU/Linux >> >> Specifically running 32bit for a particular development task that >> requires it, and pae to use more ram if needed. >> >> The disk layout is: >> >> root@carmen:/home/carmen# fdisk -l >> >> Disk /dev/sda: 64.0 GB, 64023257088 bytes >> 255 heads, 63 sectors/track, 7783 cylinders, total 125045424 sectors >> Units = sectors of 1 * 512 = 512 bytes >> Sector size (logical/physical): 512 bytes / 512 bytes >> I/O size (minimum/optimal): 512 bytes / 512 bytes >> Disk identifier: 0x000c7f0f >> >> Device Boot Start End Blocks Id System >> /dev/sda1 * 2048 2099199 1048576 83 Linux >> /dev/sda2 2099200 35653631 16777216 82 Linux swap / >> Solaris >> /dev/sda3 35653632 125045423 44695896 83 Linux >> >> Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes >> 255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors >> Units = sectors of 1 * 512 = 512 bytes >> Sector size (logical/physical): 512 bytes / 4096 bytes >> I/O size (minimum/optimal): 4096 bytes / 4096 bytes >> Disk identifier: 0x00004e50 >> >> Device Boot Start End Blocks Id System >> /dev/sdb1 2048 62916607 31457280 83 Linux >> /dev/sdb2 62916608 1953525167 945304280 83 Linux >> >> >> >> root@carmen:/home/carmen# mount >> /dev/sda3 on / type ext4 (rw,errors=remount-ro) >> proc on /proc type proc (rw,noexec,nosuid,nodev) >> sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) >> none on /sys/fs/cgroup type tmpfs (rw) >> none on /sys/fs/fuse/connections type fusectl (rw) >> none on /sys/kernel/debug type debugfs (rw) >> none on /sys/kernel/security type securityfs (rw) >> udev on /dev type devtmpfs (rw,mode=0755) >> devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) >> tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755) >> none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880) >> none on /run/shm type tmpfs (rw,nosuid,nodev) >> none on /run/user type tmpfs >> (rw,noexec,nosuid,nodev,size=104857600,mode=0755) >> none on /sys/fs/pstore type pstore (rw) >> /dev/sda1 on /boot type ext2 (rw) >> /dev/sdb1 on /var type ext4 (rw) >> /dev/sdb2 on /home type ext4 (rw) >> binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc >> (rw,noexec,nosuid,nodev) >> systemd on /sys/fs/cgroup/systemd type cgroup >> (rw,noexec,nosuid,nodev,none,name=systemd) >> gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse >> (rw,nosuid,nodev,user=carmen) >> root@carmen:/home/carmen# >> >> >> in summary /boot / and swap on the SSD >> /var and /home on the physical disk >> >> >> Problem... on boot up it segfaults on starting every application, each >> time getting a little further into the startup sequence, then eventually >> the application loads and it runs stable for the remainder of the session. >> >> >> Today I sym linked /tmp to /var/ttmp in case it was a timing issue >> between some files being written to the ssd /tmp faster than others could >> be written to the regular drive in /var/tmp >> >> Doesn't seem to have made any improvement. >> >> The machine is remote to me, was fine when I was there, but being a pain >> since. I am going to try and replicate the setup here with regular Debian. >> >> Can anyone spot any obvious flaw in the above approach that might result >> in the applications segfaulting as they load until they sucessfully load >> once? >> >> Anyone heard of this before? >> >> TIA, >> >> Harry. >> -- >> Irish Linux Users Group >> --- >> You received this message because you are subscribed to the Google Groups >> "ILUG" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/a/linux.ie/group/ilug/. >> To view this discussion on the web, visit >> https://groups.google.com/a/linux.ie/d/msgid/ilug/CAHAPYVCgNdcGamjMJQZ_7-5V%2B29%2Bqt%2BW2eBDES2VY4X__Yjnrg%40mail.gmail.com >> <https://groups.google.com/a/linux.ie/d/msgid/ilug/CAHAPYVCgNdcGamjMJQZ_7-5V%2B29%2Bqt%2BW2eBDES2VY4X__Yjnrg%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > > > > -- > > Rodrigo de Campos > > -- > Irish Linux Users Group > --- > You received this message because you are subscribed to the Google Groups > "ILUG" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/a/linux.ie/group/ilug/. > To view this discussion on the web, visit > https://groups.google.com/a/linux.ie/d/msgid/ilug/CAPH5xVQp3gZGEx3WY8KRnSW5WQfHGQ8kV-pnGivrJp9028xKYQ%40mail.gmail.com > <https://groups.google.com/a/linux.ie/d/msgid/ilug/CAPH5xVQp3gZGEx3WY8KRnSW5WQfHGQ8kV-pnGivrJp9028xKYQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > > -- > Irish Linux Users Group > --- > You received this message because you are subscribed to the Google Groups > "ILUG" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/a/linux.ie/group/ilug/. > To view this discussion on the web, visit > https://groups.google.com/a/linux.ie/d/msgid/ilug/55B8C68D.6080106%40gmail.com > <https://groups.google.com/a/linux.ie/d/msgid/ilug/55B8C68D.6080106%40gmail.com?utm_medium=email&utm_source=footer> > . > -- Irish Linux Users Group --- You received this message because you are subscribed to the Google Groups "ILUG" group. 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