https://bugzilla.novell.com/show_bug.cgi?id=655221 https://bugzilla.novell.com/show_bug.cgi?id=655221#c1 --- Comment #1 from Christoph Bartoschek 2010-11-22 10:25:50 UTC --- Here is the output of top sorted by memory consumption: top - 11:25:13 up 10 days, 20:24, 5 users, load average: 14.49, 15.15, 15.26 Tasks: 272 total, 1 running, 271 sleeping, 0 stopped, 0 zombie Cpu(s): 1.4%us, 0.2%sy, 0.0%ni, 12.1%id, 86.2%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 193841M total, 193007M used, 833M free, 0M buffers Swap: 204797M total, 59236M used, 145561M free, 161524M cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 19459 joachimi 20 0 23.6g 10g 4000 S 10 5.8 410:48.35 bonnRoute 9329 bartosch 20 0 10.9g 9.8g 2648 D 0 5.2 28:48.71 chipbench 28845 bartosch 20 0 10.9g 4.8g 1148 D 0 2.5 28:06.38 chipbench 6505 bartosch 20 0 10.7g 3.6g 1084 D 0 1.9 289:18.60 chipbench 11061 bartosch 20 0 9.8g 1.5g 944 D 0 0.8 146:00.89 chipbench 11010 bartosch 20 0 5638m 1.5g 964 D 0 0.8 82:40.26 chipbench 10946 bartosch 20 0 5952m 1.3g 968 D 0 0.7 80:51.53 chipbench 10976 bartosch 20 0 5563m 1.3g 984 D 0 0.7 77:48.38 chipbench 11030 bartosch 20 0 9807m 1.3g 4284 D 0 0.7 148:59.71 chipbench 18806 bartosch 20 0 99.0m 19m 640 S 0 0.0 0:30.46 chipbench 9330 bartosch 20 0 66488 6648 768 S 0 0.0 0:25.64 chipbench 10914 bartosch 20 0 81888 5172 628 S 0 0.0 0:42.89 chipbench 28846 bartosch 20 0 66488 4164 664 S 0 0.0 0:27.69 chipbench 17065 bartosch 20 0 99.0m 3752 636 S 0 0.0 0:35.91 chipbench 11031 bartosch 20 0 75724 3212 848 S 0 0.0 0:47.32 chipbench 6508 bartosch 20 0 74700 3064 800 S 0 0.0 0:40.53 chipbench 13523 root 20 0 14232 2656 896 S 0 0.0 0:00.10 bash 11062 bartosch 20 0 73668 2472 652 S 0 0.0 0:44.38 chipbench 13656 root 20 0 14240 2428 748 S 0 0.0 0:00.43 bash 2477 root 20 0 325m 2408 1460 S 0 0.0 12:37.61 kdm_greet 28325 bartosch 20 0 99.0m 2328 636 S 0 0.0 0:33.41 chipbench 10977 bartosch 20 0 71616 2044 660 S 0 0.0 0:43.10 chipbench 10947 bartosch 20 0 71616 1960 652 S 0 0.0 0:45.06 chipbench 11011 bartosch 20 0 70588 1916 652 S 0 0.0 0:48.55 chipbench 10894 bartosch 20 0 80856 1900 644 S 0 0.0 0:41.54 chipbench 10903 bartosch 20 0 79832 1804 628 S 0 0.0 0:43.65 chipbench -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=655221 https://bugzilla.novell.com/show_bug.cgi?id=655221#c2 John Sørensen changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |john@hovedpuden.dk --- Comment #2 from John Sørensen 2011-01-14 12:35:48 UTC --- (In reply to comment #1) I have a similar problem on two systems both running openSuSE 11.3. One of the systems has 96GB of memory and is used for R jobs running in 5 parallel processes each having 10GB data. On this system the problem occurred after adding two swap files of 10 and 20GB both residing on the same ext4 root file system. One way of reproducing this problem is: 1. create 2 swap files of 10GB each on an ext4 file system Filename Type Size Used Priority /dev/sda1 partition 2096476 2096476 -1 /root/swap file 10485756 418692 -2 /root/swap1 file 10485756 418672 -3 2. run some file system intense jobs like tar -cf /dev/null /usr 3. run some memory intensive jobs starving the configured swap. An example of memory starving jobs might be running R jobs in parallel mode or this executing simple code in an endless loop for around 2 hours on a system with 16GB of memory and two 10GB swap files in an ext4 file system: #include #include #include int main(int argc, char** argv) { char* buffer; buffer=malloc((long)10*1024*1024*1024); fork(); memset(buffer, 0, (long)10*1024*1024*1024); printf("Allocated %d MB\n",10*1024 ); return 0; } Depending on the size of your memory more instances of the program might be needed. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=655221 https://bugzilla.novell.com/show_bug.cgi?id=655221#c3 Jan Kara changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |NEEDINFO InfoProvider| |john@hovedpuden.dk --- Comment #3 from Jan Kara 2011-04-26 16:36:24 UTC --- Christoph, this bug is caused swap-over-nfs patches and should be fixed in the next maintenance release (I have committed the fix to openSUSE 11.3 branch on March 23). Until that time you can use kernel-of-the-day package (ftp://ftp.suse.com/pub/projects/kernel/kotd/openSUSE-11.3/x86_64/) John, in your case I'm not sure whether it is the same issue. It may be the same but it may not. Please provide /proc/meminfo and /proc/slabinfo from the machine having issues when it has problems... Thanks. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=655221 https://bugzilla.novell.com/show_bug.cgi?id=655221#c5 --- Comment #5 from John Sørensen 2011-05-04 15:17:31 UTC --- I am sorry but I no longer have the ext4 filesystem. I had to switch to XFS in order to make this system more stable. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.