Re: Elasticsearch and Openshift on zVM - Suffering from CPU steal ?

e are my own and do not engage my company in any > way */ > > > From: Linux on 390 Port on behalf of Rob van > der Heij > Sent: February 6, 2021 12:18 PM > To: LINUX-390@VM.MARIST.EDU > Subject: Re: Elasticsearch and Openshift on zVM - Suffering from CPU steal

Elasticsearch and Openshift on zVM - Suffering from CPU steal ?

Hello, I hope someone can share the experience or put some light on the problem. I will refer to elasticsearch as "ES" in this email. We are running 2 Openshift clusters on 1 zVM LPAR (16 logical CPU , SMT2). Cluster 1 (development workload): 3x Master node (each zLinux 8 vCPU) (VSWITCH-1

zVM VSwitch networking

Hello, I have the following network configuration scenarios. In scenario 1 - physical network infrastructure attached to Mainframe is not involved in communication between two zLinux hosts and traffic is handled on zVM level , is it a correct assumption ? Scenario 1: 2x zLinux on VSWITCH (option

Re: Overcommitting zLinux CPU

Hello, I also thought that enabling SMT will degrade performance of a single threaded process, but I could not find anyone to confirm that. Thank you Christian. Alan: Postgres is not constrained by having only 4 cores. It's running fine with 1 vCPU. The problem is with overall Openshift Cluster

Re: Overcommitting zLinux CPU

R hypervisor creates > logical CPUs, each getting horsepower according to the weighting of the > LPAR. > > For these reasons, you generally do not want to have more virtual CPUs in a > guest than you have logical CPUs to run them on. > > Regards, > Alan Altmark > IBM >

Re: Overcommitting zLinux CPU

enabling the feature, CPU utilization On Mainframe dropped from 95% to 60%. On the other hand, I'm wondering if it negatively affected single threaded workloads? All the best Mariusz On Sun, 2 Aug 2020, 00:34 Mark Post, wrote: > On 7/31/20 7:46 PM, Mariusz Walczak wrote: > > We h

Overcommitting zLinux CPU

Hello Group, We have 4 IFL on Mainframe box, 4 IFL on zVM and 4 cpu on zLinux. I'd like to gain zLinux capacity (run more processes) and increase to 16 cpu. Will I degrade performance of a single threaded workload if I do this? All the best, Mariusz

Re: Quick question on single user mode

Hello Chris, If you are on zVM, then Boot SLES into installation mode (from VM reader using image and parm file). Temp root password and IP is specified in parm file. Then you connect via ssh, activate dasd, mount and chroot (look into Sles Admin guide "repair bootloader") Regards. M. On Wed,

Re: zLinux authentication on windows AD LDAP

Hello, FYI. To make linux LDAP client working with AD, I had to add posix attributes (uid,gid,uidNumber, etc..) to my AD user. I configured LDAP client using "sssd" on SLES12 and I'm happily authenticating against AD. Thanks for help, Mariusz pon., 1 kwi 2019 o 16:19 Alan Altmark napisał(a):

zLinux authentication on windows AD LDAP

Hello Group, We are running zLinux SLES 12-3 on zVM. I'm looking for a way to authenticate user logon to zLinux server over windows AD LDAP. I configured LDAP client to point to windows LDAP. Then I used ldapsearch to make a query for id user01 - I got results. I used yast "auth" module to "test

LVM volume size

The below email is classified: Internal Hello group, Recently we had a DASD failure and I had to delete and recreate logical volume in LVM. We had two model-9 DASDs defined as two logical volumes (different volume groups). I used lvcreate -l 1760 to make sure the number of extents is the

Re: zLinux with HyperPAV

- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Mariusz Walczak Sent: Thursday, March 22, 2018 11:20 AM To: LINUX-390@VM.MARIST.EDU Subject: zLinux with HyperPAV The below email is classified: Internal Hello, I'm trying to setup HyperPAV on our SLES 11.4. From

zLinux with HyperPAV

The below email is classified: Internal Hello, I'm trying to setup HyperPAV on our SLES 11.4. From documentation I read I must define a full-pack minidisk in form: MDISK basevdev devtype DEVNO rdev mode OR MDISK basevdev devtype 0 END volser mode I used DEVNO and I believe I was able to

Re: TSM client - DSMC interface hung

The below email is classified: Internal Hello, If someone is planning to run TSM client > v 6.4.3 on z14, then ask IBM to provide you gskcrypt and gskssl package at least 8.0.50.84. It fixed the issue. Thanks, Mariusz -Original Message- From: Mariusz Walczak Sent: Wednesday, Ma

Re: TSM client - DSMC interface hung

vary by software product - open a PMR against TSM client and they will steer you towards the best solution in your case. On Fri, Mar 9, 2018 at 3:47 AM, Mariusz Walczak < mariusz.walc...@deutsche-boerse.com> wrote: > The below email is classified: Internal > > Hello, > &g

Re: Accounting on zVM

Thank you for all replies. I will make use of this knowledge. Mariusz 2017-05-25 17:39 GMT+02:00 Alan Altmark : > On Thursday, 05/25/2017 at 02:40 GMT, Dave Jones > wrote: > > For quick and dirty z/VM accounting reports, I find CMS Pipelines very

Accounting on zVM

Hello Community , We are running VM 6.4. Do you know any tool or manual for processing accounting records on zVM? Those files are accumulating on our systems and I'd like to create a report from it. However, the data from column 29 is not human readable (""b"}a"") and I'm not sure how to

Re: z/VM 540 - Simulate I/O error

d CU notifications. > > Regards, > Alan > > >Mariusz Walczak --- [LINUX-390] z/VM 540 - Simulate I/O error --- > From:"Mariusz Walczak" <blanc...@gmail.com>To:LINUX- > 390@VM.MARIST.EDUDate:Thu, Sep 29, 2016 11:57 PMSubject:[LINUX-390] z/VM > 54

z/VM 540 - Simulate I/O error

Hello, Lately I installed a PTF to EREP on second level z/VM. I'm looking for a way to test the PTF. Do you know how to simulate hardware error and force EREP to write records ? So far I tried... - writing to the file simultaneously by 2 users. - attempt to write on read-only