Tim Peters schrieb: > [Andreas Krasa] > >>We are encountering some really strange problems with Zope 2.7.7 on our >>RedHat EL 4 Linux machines. >> >>During the Zope 2.7.7 compilation works - however most of the time "make >>test" returns a random number of errors (somewhere between 20 and 30) >>ALL related to ZEO. >> >>The funny thing is, we've managed to do a "make test" without any >>failures - however after doing a "make distclean" and compiling >>everything again "make test" produces the above mentioned errors (using >>*exactly* the same source code!). >> >>I have absolutely no idea how this can happen - ANY hints are >>appreciated! Is this a known issue? > > > No. For example, it doesn't happen in the daily overnight testrunner reports. > > >>What could it be related to? > > > ZEO <wink>? You'll have to give more info about which tests fail, and > precisely how they fail. Because many of the ZEO tests create > multiple processes, and try to assign sockets so that these processes > can communicate, they're vulnerable to vagaries of OS process > scheduling and socket use by other apps. For example, on a slow or > overburdened (with other simultaneous work) machine, some ZEO tests > can fail due to not getting enough cycles soon enough. The worst > tests of that sort wait as long as a minute now for another process to > "do something" they're waiting for before failing, but not even > waiting a minute can _guarantee_ success. > > Might be informative to run the tests on an otherwise-quiet machine.
Thank you Tim for the feedback! Our system is a Intel Xeon 3 GHz Dual-CPU with 2.5 GB RAM running RedHat Enterprise Linux 4 (SElinux disabled). As this is a test-machine it doesn't run any CPU-consuming tasks I can think of - the server load is usually somewhere between 0.00 and 0.10. But I'll check that nevertheless! Best regards Andreas _______________________________________________ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )