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[Bug 712958] Kernel Problems Under Multi-User Loads

David Richards <drichard@xxxxxxxxx> changed:

What |Removed |Added
InfoProvider|drichard@xxxxxxxxx |

--- Comment #8 from David Richards <drichard@xxxxxxxxx> 2011-08-22 19:27:51 UTC
Attaching hwinfo. The other servers are running similar hardware. Here is
some more information:

We believe the networking problem is in the operating system because we duped
the physical machine and moved it to VMWare. The VM server is using Intel
cards vs the physical server which is running Broadcom. On the VM:

eth0 Link encap:Ethernet HWaddr 00:50:56:8B:00:05
inet addr: Bcast: Mask:
RX packets:24185635 errors:0 dropped:548189 overruns:0 frame:0

So it's doing the same thing as the physical machine, dropping tons of packets.

Back to the disk IO issue, I found something very odd. I'm seeing speed
differences based on the sub-directory, even though we only have one partition
of / !

If I vi /etc/hosts it takes about 4-5 seconds to open. I then copied the hosts
file into various folders. If I vi /tmp/hosts it opens immediately. If I vi
/home/hosts, it opens in about 2 seconds. I then placed it on an NFS mount and
that takes about 2 seconds to open. This is just crazy:

/dev/disk/by-id/cciss-3600508b100184a395358363055330002-part1 swap swap
defaults 0 0
/dev/disk/by-id/cciss-3600508b100184a395358363055330002-part2 / ext4
acl,user_xattr,barrier=0 1 1

/etc, /tmp and /home are on the same physical mount.

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