OK, I get > pfcount_aggregator -i > dnacl:1@0+dnacl:1@1+dnacl:1@2+dnacl:1@3+dnacl:1@4+dnacl:1@5+dnacl:1@6+dnacl:1@7+dnacl:1@8+dnacl:1@9+dnacl:1@10+dnacl:1@11+dnacl:1@12+dnacl:1@13+dnacl:1@14+dnacl:1@15
Using PF_RING v.5.4.6 Capturing from dnacl:1@0 # Device RX channels: 1 Capturing from dnacl:1@1 # Device RX channels: 1 *** error opening /mnt/hugepages/dnacluster_1_248: Too many open files *** *** error mmap'ing 385 hugepages of 2 Mb *** * Error: failure mapping hugepages Increasing the hugepages to 2GB makes no difference, and 385x2Mb < 1GB anyway. > hugeadm --explain > Total System Memory: 32130 MB > > Mount Point Options > /mnt/hugepages rw,relatime > > Huge page pools: > Size Minimum Current Maximum Default > 2097152 1024 1024 1024 * > > Huge page sizes with configured pools: > 2097152 > > The recommended shmmax for your currently allocated huge pages is 2147483648 > bytes. > To make shmmax settings persistent, add the following line to > /etc/sysctl.conf: > kernel.shmmax = 2147483648 > > To make your hugetlb_shm_group settings persistent, add the following line to > /etc/sysctl.conf: > vm.hugetlb_shm_group = 0 > > Note: Permanent swap space should be preferred when dynamic huge page pools > are used. By default kernel.shmmax was only 32MB, but increasing it on its own didn't solve my issue. Best Wishes, Chris On 23/10/12 18:27, Alfredo Cardigliano wrote: > Chris > you can dynamically allocate hugepages with: > > echo 1024 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages > > or you can change the default size and allocate them at boot time with kernel > parameters: > > default_hugepagesz=1G hugepagesz=1G hugepages=4 > > In order to make the hugepages available for use, before running the cluster, > you have to mount the hugetlbfs filesystem somewhere: > > mount -t hugetlbfs none /mnt/hugepages > > After that, you can run the pfdnacluster_master with -u. > Please let us know. > > Regards > Alfredo > > On Oct 23, 2012, at 7:09 PM, Chris Wakelin <[email protected]> wrote: > >> I'd not heard of hugepages before. It looks like Ubuntu 12.04 has 2MB >> pages defined but none allocated. It also supports "transparent huge >> pages". Can these be used by DNA clusters? Can you give some suggested >> settings I could try? >> >> Best Wishes, >> Chris >> >> On 21/10/12 18:51, Alfredo Cardigliano wrote: >>> Chris >>> besides the low-level settings, now you can also use the hugepages support. >>> Be aware it is a pretty new feature under testing (see pfdnacluster_master >>> -u). >>> Please note that you have to setup the hugepages support in your system >>> before using it. >>> If you decide to have a look at it, please let us know if it is working >>> fine for you. >>> >>> Best Regards >>> Alfredo >>> -- --+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+- Christopher Wakelin, [email protected] IT Services Centre, The University of Reading, Tel: +44 (0)118 378 2908 Whiteknights, Reading, RG6 6AF, UK Fax: +44 (0)118 975 3094 _______________________________________________ Ntop-misc mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-misc
