Hi, after experiencing kernel hang ups on service10.bc, this system’s kernel has been updated from 3.10.0-1160 to 3.10.0-1162 . Now, all 18 booking core servers (including lmx) have the same kernel. This article <https://blog.seibert-media.net/blog/2017/10/05/it-tagebuch-linux-was-sind-cpu-lockups/> points to this solution after such failures: kernel:NMI watchdog: BUG: soft lockup - CPU#1 stuck for 44s! [php:21870] Kind regards Gunnar -- Mit freundlichen Grüßen Gunnar Mann - Systemadministration - ________________________________________________________ TraSo GmbH Nonnenstraße 42 D-04229 Leipzig Tel.: +49 341 355 740 76 Fax: +49 341 355 740 21 E-Mail: g.mann@traso.de <mailto:g.mann@traso.de> <https://www.traso.de/> <https://www.facebook.com/TraSoGmbH> <https://www.xing.com/companies/trasogmbh> ________________________________________________________ Geschäftsführer: Haiko Gerdes Handelsregister: Amtsgericht Leipzig, HRB 21850 <https://www.kununu.com/de/traso1> ________________________________________________________ Geschäftsführer: Haiko Gerdes Handelsregister: Amtsgericht Leipzig, HRB 21850 <https://www.kununu.com/de/traso1>