Any known problem with arla under high memory load?

Nils Smeds smeds at pdc.kth.se
Tue Oct 10 17:32:25 CEST 2000



I have come in contact with a problem of a file becoming seemingly corrupted 
under some circumstances. The enclosed example is the result of a pipe of a
compiled Fortran program. Something in the like of:

./src/MyExecutable > Kgrn-s15c4.06.log

It is not yet confirmed under what exact circumstances this happens, nor is it
quite settled that it is the arla client. But the load on the arla client is
fairly low from this executable. The most outstanding thing with this particular
execution was that paging took place.

p08> top
  1:37pm  up 83 days,  2:20,  1 user,  load average: 1.00, 1.01, 1.00
28 processes: 26 sleeping, 2 running, 0 zombie, 0 stopped
CPU states: 49.7% user,  0.4% system,  0.0% nice, 49.8% idle
Mem:  258184K av, 255500K used,   2684K free,  32684K shrd,   5240K buff
Swap: 128516K av, 107832K used,  20684K free                 54632K cached

  PID USER     PRI  NI  SIZE  RSS SHARE STAT  LIB %CPU %MEM   TIME COMMAND
 5974 someuser  10   0  277M 208M 29872 R       0 49.6 82.7 457:34 Kgrn
 6562 root       1   0   968  968   788 R       0  0.3  0.3   0:00 top
    1 root       0   0    76    0     0 SW      0  0.0  0.0   0:35 init
    2 root       0   0     0    0     0 SW      0  0.0  0.0   0:05 kflushd
[...]

p08# ps -o pid,uid,stime,etime,cputime,pagein,majflt,minflt,comm -p 5974
  PID   UID STIME     ELAPSED     TIME PAGEIN MAJFLT MINFLT COMMAND
 5974 XXXXX Aug29 19:27       07:38:43 1370949 1370949 968443 NameOfExecutable


p08# /usr/arla/bin/arlad --version
arlad: arla-0.34pre
p08# uname -a
Linux p08.pdc.kth.se 2.2.15 #1 SMP Thu Jun 29 11:43:00 CEST 2000 i686 unknown

smeds> od -c Kgrn-s15c4.06.log | head
0000000  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
*
0270000   F   :       I   P   A   S   S       =       9   1       I   L
0270020       =           2       I   T       =           4       I   S
0270040       =           1       E   0   =           -   0   .   9   6
0270060   4   7   6   8       D   (   e   0   )   =               1   .
0270100   1   9   E   -   1   4  \n  \n       K   K   R   F   C   D   :
0270120       T   n   o   s       (   s   ,   p   ,   .   .   .   ,   t
0270140   o   t   )       :               0   .   3   5   6   1        
0270160   0   .   5   2   5   6           0   .   2   6   6   1        


Is this someone else has seen in this arla version and is it something 
someone has addressed in later revisions of 0.34?

PS. ftp://ftp.stacken.kth.se/pub/arla/README says:  latest is 0.31   ;-)






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