> From: bheemesh v [mailto:bheem...@gmail.com]
> Sent: Friday, November 20, 2009 12:12 AM
> YES, CPU stays 100% for ever, i think your guess might be right. But as
> an observation when i had less than 2000 VLAN's this was not the case
> it is used to fluctuate between 10-40-100 but predominently 100%.
Hmmmm...
I once did some testing on performance of directories in the ext2
filesystem. I found that directory operations - list, add a file, remove a
file, etc. were frisky up until about 1000 entries. By 2000 entries there was
a perceptible slowdown. With 4000 entries in a directory, it took over a day
just to remove all the files. My conclusion was that the directory operations
were iterating the entire directory list for each operation, leading to
exponential performance degradation. I saw the same problem adding routes,
with the same thresholds. If this is your issue, you will have problems no
matter what, but heavy caching should help matters a little. To test this, do
an ls in the directory that holds all the vlans.
HTH,
Mike
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