[ZODB-Dev] more lockup information / zope2.9.6+zodb 3.6.2

[Christian Theune]

Morning,

Am Mittwoch, den 11.04.2007, 11:31 -0500 schrieb Alan Runyan:
> ETHERNET CARD:
> 05:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708
> Gigabit Ethernet (rev 11)
> 
>   - I have turned down transaction timeout to 15 seconds.
> 
>   - I currently have 11 ZEO Clients up; but showing below (seems
> strange)  sometimes the clients are 6 or 7..
> 
>   - Have not confirmed
> ZEO MONITOR OUTPUT:
> 
> Trying 127.0.0.1...
> Connected to localhost.localdomain (127.0.0.1).
> Escape character is '^]'.
> ZEO monitor server version 3.6.2
> Wed Apr 11 12:30:31 2007
> 
> Storage: 1
> Server started: Wed Apr 11 10:56:50 2007
> Clients: 10
> Clients verifying: 0
> Active transactions: -1

Huh? You're owing the system a transaction. However, by looking at the
code briefly, this might happen if tpc_abort() and _abort() kind of
overlap. And you did have two aborts at that point in time.

> Commits: 24
> Aborts: 2
> Loads: 95941
> Stores: 523
> Conflicts: 0
> Conflicts resolved: 20
> 
> Storage: 2
> Server started: Wed Apr 11 10:56:50 2007
> Clients: 8
> Clients verifying: 0
> Active transactions: 0
> Commits: 9
> Aborts: 0
> Loads: 40836
> Stores: 714
> Conflicts: 0
> Conflicts resolved: 167

Ah. The different clients might be because you have two storages and
your ZEO clients are configured in a way not to connect to the exactly
same storages? Or they are but they weren't able to.
(See hardware/network problems.)

Something that came to my mind that might block the ZEO server for a
long time are hard disk failures. Check your dmesg log. However, the
network errors you see in various places really need to be tracked down.

Christian

-- 
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