Many people seem to wait for the announcement of CentOS 6.0, so I want to share some test results I did with SL 6.0.. The actual 6.0 kernel can NOT allocate tape buffers when the server is heavily loaded at least on some LSILogic hardware. There is a big problem of slab buffer increase that can cause reboot/freeze of the server under load. Reported by many and verified by me :-( So perhaps it's a good idea to wait for 6.1 for mission critical servers.. Gerhard Schneider -- Gerhard Schneider e-Mail:gs at ilsb.tuwien.ac.at Institute of Lightweight Design and Tel.: +43 1 58801 31716 Structural Biomechanics (E317) Fax.: +43 1 58801 31799 Vienna University of Technology / Austria DVR: 0005886 A-1040 Wien, Gusshausstrasse 27-29 http://www.ilsb.tuwien.ac.at/ -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 252 bytes Desc: OpenPGP digital signature URL: <http://lists.centos.org/pipermail/centos/attachments/20110518/e4db931f/attachment-0005.sig>
Am 18.05.2011 10:15, schrieb Gerhard Schneider:> > Many people seem to wait for the announcement of CentOS 6.0, so I want > to share some test results I did with SL 6.0.. > > The actual 6.0 kernel can NOT allocate tape buffers when the server is > heavily loaded at least on some LSILogic hardware. > There is a big problem of slab buffer increase that can cause > reboot/freeze of the server under load. Reported by many and verified by > me :-( > > So perhaps it's a good idea to wait for 6.1 for mission critical servers..Is there any bugzilla report for this? SL or redhat? Thx Rainer
> Is there any bugzilla report for this? > SL or redhat?> Thx > RainerNot from my side. I'm CentOS user - only testing 6.0 The tape issue has been discussed on the linux-scsi mailing list 6 months ago - including some fix - and there was a bug report for the Ubuntu 2.6.32 kernel. The slab issue has been discussed in the rhelv6-list in February. Sorry, but the large servers I used for testing are back in business with CentOS 5.6 after playing around for one week (it's my way to check that issues are not hardware related). Gerhard Schneider -- Gerhard Schneider Institute of Lightweight Design and e-Mail: gs at ilsb.tuwien.ac.at Structural Biomechanics (E317) Tel.: +43 664 60 588 3171 Vienna University of Technology / Austria Fax: +43 1 58801 31799 A-1040 Wien, Gusshausstrasse 27-29 http://www.ilsb.tuwien.ac.at/~gs/ -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 253 bytes Desc: OpenPGP digital signature URL: <http://lists.centos.org/pipermail/centos/attachments/20110518/a0030ad9/attachment-0005.sig>