FYI, I opened a bug report @ Ubuntu: https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1693854
----- Uwe Schindler Achterdiek 19, D-28357 Bremen http://www.thetaphi.de eMail: [email protected] > -----Original Message----- > From: Uwe Schindler [mailto:[email protected]] > Sent: Friday, May 26, 2017 5:35 PM > To: [email protected] > Subject: New Policeman Jenkins Hardware > > Hi, > > sorry for being inactive the last week. I was changing datacenters with my > servers. One of them was Policeman Jenkins. > > The new one is now running stable (initially it had some problems with 32 bit > JDKs due to a Ubuntu 16.04 kernel bug - see the failure mails last weekend). > The new server now has native IPv6 access and is equipped with two NVMe > SSDs. Some hardware specs: > > - Intel(R) Xeon(R) CPU E3-1275 v5 @ 3.60GHz (4 cores, 8 hypercores) > - 64 GiB RAM > - VirtualBox running Windows, MacOSX, Solaris (it is just the old VMs no > changes here) > - Ubuntu 16.04, now with Edge Hardware Enablement stack, the default one > is broken (see below): 4.10.0-21-generic #23~16.04.1-Ubuntu SMP Tue May 2 > 12:57:17 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux > > - SSDs: > # nvme list > Node SN Model > Version Namespace > Usage Format FW Rev > ---------------- -------------------- > ---------------------------------------- -------- --------- ---- > ---------------------- ---------------- -------- > /dev/nvme0n1 17ES101DTUHV THNSN5512GPU7 TOSHIBA > 1.1 1 512.11 GB / 512.11 GB 512 B + 0 B 57GA4103 > /dev/nvme1n1 17ES1023TUHV THNSN5512GPU7 TOSHIBA > 1.1 1 512.11 GB / 512.11 GB 512 B + 0 B 57GA4103 > > - Hosted @ Hetzner - this one: > https://www.hetzner.de/us/hosting/produkte_rootserver/px61nvme > > The problem I had last weekend was caused by a buggy 4.8 kernel in the > default Ubuntu 16.04.2 LTS on new installations. It breaks when executing 32 > bit Java! All versions (Java 8, Java 7, also Java 9) fail with strange > NullPointerExceptions inside ThreadLocal or later in code that uses outputs > of thread locals. This already breaks running the compiler in Ant when > compiling lucene-core! I have the feeling that some "reckless & cowboy" > (citing rcmuir) backports/patches in the kernel have caused this. After > updating to 4.10 kernel series all is fine. There is one specific patch that > seems to cause this (just a guess: of course a pthreads fix for 32 bits....). > I will > open a bug report at Ubuntu. So currently it is impossible to run any 32 bit > JVM on Ubuntu 64 bit systems with kernel 4.8 (if somebody has same > problem. If you have Ubuntu 16.04, either downgrade to the default 4.4 > kernel as shipped with original version, or update to: linux-generic-hwe- > 16.04-edge (which installs 4.10), that does not seem to have the broken > patch. > > Uwe > > ----- > Uwe Schindler > Achterdiek 19, D-28357 Bremen > http://www.thetaphi.de > eMail: [email protected] > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
