Re: [dpdk-users] DPDK-20.11 and HUGEPAGES
Thank you for your message. I will post the log after I return from visiting the lab where the test environment is hosted later today. Fred > -Original Message- > From: Huai-En Tseng [mailto:t...@csie.io] > Sent: Wednesday, May 26, 2021 7:05 PM > To: Templin (US), Fred L > Cc: users@dpdk.org > Subject: Re: [dpdk-users] DPDK-20.11 and HUGEPAGES > > > Hi, DPDK can be executed under 2MB hugepages scenario, and 1GB hugepages is > not necessary. > > Could you paste the log? > > > > > Message: 2 > > Date: Wed, 26 May 2021 18:12:40 + > > From: "Templin (US), Fred L" > > To: "users@dpdk.org" > > Subject: [dpdk-users] DPDK-20.11 and HUGEPAGES > > Message-ID: > > Content-Type: text/plain; charset="us-ascii" > > > > Hi, I have a test environment based on RHEL VMs that are run from a > > hypervisor > > that I have no administrative or physical access to. My only administrative > > control > > is by ssh into the running VMs over the network where at least I have sudo > > access. > > > > When I run my DPDK-20.11 application, it crashes because hugepages are not > > configured. So, I allocated 2MB hugepages at runtime but the app still > > crashes > > because there are no 1GB hugepages which on RHEL can only be set at boot > > time. > > > > I found instructions for setting RHEL boot parameters that will allocate 1GB > > hugepages at boot time, but I have not tried it because I am concerned that > > if I mess something up and reboot the VM it may never come back. > > > > So, I am wondering if DPDK-20.11 supports a "semi-huge" mode of operation > > that allows it to run with only 2MB hugepages configured and no 1GB pages? > > If so, what would be the way to set that up? > > > > I have also tried invoking DPDK with "--no-huge". My application starts > > fine, > > but at runtime it crashes out of a DPDK API call while processing an mbuf > > for a received packet. I can give more details about this if there is a > > chance > > it could be debugged - or, is "--no-huge" problematic in general? > > > > Thanks - Fred > >
Re: [dpdk-users] DPDK-20.11 and HUGEPAGES
Hi, DPDK can be executed under 2MB hugepages scenario, and 1GB hugepages is not necessary. Could you paste the log? > > Message: 2 > Date: Wed, 26 May 2021 18:12:40 + > From: "Templin (US), Fred L" > To: "users@dpdk.org" > Subject: [dpdk-users] DPDK-20.11 and HUGEPAGES > Message-ID: > Content-Type: text/plain; charset="us-ascii" > > Hi, I have a test environment based on RHEL VMs that are run from a hypervisor > that I have no administrative or physical access to. My only administrative > control > is by ssh into the running VMs over the network where at least I have sudo > access. > > When I run my DPDK-20.11 application, it crashes because hugepages are not > configured. So, I allocated 2MB hugepages at runtime but the app still crashes > because there are no 1GB hugepages which on RHEL can only be set at boot time. > > I found instructions for setting RHEL boot parameters that will allocate 1GB > hugepages at boot time, but I have not tried it because I am concerned that > if I mess something up and reboot the VM it may never come back. > > So, I am wondering if DPDK-20.11 supports a "semi-huge" mode of operation > that allows it to run with only 2MB hugepages configured and no 1GB pages? > If so, what would be the way to set that up? > > I have also tried invoking DPDK with "--no-huge". My application starts fine, > but at runtime it crashes out of a DPDK API call while processing an mbuf > for a received packet. I can give more details about this if there is a chance > it could be debugged - or, is "--no-huge" problematic in general? > > Thanks - Fred >
[dpdk-users] DPDK-20.11 and HUGEPAGES
Hi, I have a test environment based on RHEL VMs that are run from a hypervisor that I have no administrative or physical access to. My only administrative control is by ssh into the running VMs over the network where at least I have sudo access. When I run my DPDK-20.11 application, it crashes because hugepages are not configured. So, I allocated 2MB hugepages at runtime but the app still crashes because there are no 1GB hugepages which on RHEL can only be set at boot time. I found instructions for setting RHEL boot parameters that will allocate 1GB hugepages at boot time, but I have not tried it because I am concerned that if I mess something up and reboot the VM it may never come back. So, I am wondering if DPDK-20.11 supports a "semi-huge" mode of operation that allows it to run with only 2MB hugepages configured and no 1GB pages? If so, what would be the way to set that up? I have also tried invoking DPDK with "--no-huge". My application starts fine, but at runtime it crashes out of a DPDK API call while processing an mbuf for a received packet. I can give more details about this if there is a chance it could be debugged - or, is "--no-huge" problematic in general? Thanks - Fred
