> On Feb 22, 2017, at 6:30 PM, Sushil Adhikari <[email protected]> wrote: > > I used the basic command line option "dpdkTimer -c 0xf -n 4" > And to update on my findings so far I have narrowed down to this line(1405) > memset(hugepage, 0, nr_hugefiles * sizeof(struct hugepage_file)); > of function rte_eal_hugepage_init() in file > dpdk\lib\librte_eal\linuxapp\eal\eal_memory.c
What version of DPDK are you using? I was looking at the file at 1405 and I do not see a memset() call. > > Yes I have the hugepages of size 2MB(2048) and when I calculate the memory > this memset function is trying to set, it comes out to 512(nr_hugefiles) * > 4144 ( sizeof(struct hugepage_file) ) = 2121728 which larger than 2MB, so my > doubt is that the hugepages I have allocated(512*2MB) is not contiguous 1GB > memory its trying to access memory thats not part of hugepage, is that a > possibility, even though I am setting up hugepages during boot time by > providing it through kernel option. > > > On Wed, Feb 22, 2017 at 8:05 PM, Wiles, Keith <[email protected]> wrote: > > > On Feb 22, 2017, at 3:05 PM, Sushil Adhikari <[email protected]> wrote: > > > > Hi, > > > > I was trying to run dpdk timer app by setting 512 2MB hugepages but the > > application crashed with following error > > EAL: Detected 4 lcore(s) > > EAL: Probing VFIO support... > > Bus error (core dumped) > > > > If I reduce the number of hugepages to 256 it works fine. I wondering what > > could be the problem here. Here's my cpu info > > I normally run with 2048 x 2 or 2048 per socket on my machine. What is the > command line you are using to start the application? > > > > > processor : 0 > > vendor_id : GenuineIntel > > cpu family : 6 > > model : 26 > > model name : Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz > > stepping : 5 > > microcode : 0x11 > > cpu MHz : 2794.000 > > cache size : 8192 KB > > physical id : 0 > > siblings : 4 > > core id : 0 > > cpu cores : 4 > > apicid : 0 > > initial apicid : 0 > > fpu : yes > > fpu_exception : yes > > cpuid level : 11 > > wp : yes > > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca > > cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx > > rdtscp lm constant_tsc arch_ > > perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni dtes64 > > monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt > > lahf_lm ida dtherm tpr_shadow vnm > > i flexpriority ept vpid > > bugs : > > bogomips : 5600.00 > > clflush size : 64 > > cache_alignment : 64 > > address sizes : 36 bits physical, 48 bits virtual > > power management: > > > > processor : 1 > > vendor_id : GenuineIntel > > cpu family : 6 > > model : 26 > > model name : Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz > > stepping : 5 > > microcode : 0x11 > > cpu MHz : 2794.000 > > cache size : 8192 KB > > physical id : 0 > > siblings : 4 > > core id : 1 > > cpu cores : 4 > > apicid : 2 > > initial apicid : 2 > > fpu : yes > > fpu_exception : yes > > cpuid level : 11 > > wp : yes > > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca > > cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx > > rdtscp lm constant_tsc arch_ > > perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni dtes64 > > monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt > > lahf_lm ida dtherm tpr_shadow vnm > > i flexpriority ept vpid > > bugs : > > bogomips : 5600.00 > > clflush size : 64 > > cache_alignment : 64 > > address sizes : 36 bits physical, 48 bits virtual > > power management:...... > > > > And Here's my meminfo > > > > MemTotal: 24679608 kB > > MemFree: 24014156 kB > > MemAvailable: 23950600 kB > > Buffers: 3540 kB > > Cached: 31436 kB > > SwapCached: 0 kB > > Active: 21980 kB > > Inactive: 22256 kB > > Active(anon): 10760 kB > > Inactive(anon): 2940 kB > > Active(file): 11220 kB > > Inactive(file): 19316 kB > > Unevictable: 0 kB > > Mlocked: 0 kB > > SwapTotal: 0 kB > > SwapFree: 0 kB > > Dirty: 32 kB > > Writeback: 0 kB > > AnonPages: 9252 kB > > Mapped: 11912 kB > > Shmem: 4448 kB > > Slab: 27712 kB > > SReclaimable: 11276 kB > > SUnreclaim: 16436 kB > > KernelStack: 2672 kB > > PageTables: 1000 kB > > NFS_Unstable: 0 kB > > Bounce: 0 kB > > WritebackTmp: 0 kB > > CommitLimit: 12077660 kB > > Committed_AS: 137792 kB > > VmallocTotal: 34359738367 kB > > VmallocUsed: 0 kB > > VmallocChunk: 0 kB > > HardwareCorrupted: 0 kB > > AnonHugePages: 2048 kB > > CmaTotal: 0 kB > > CmaFree: 0 kB > > HugePages_Total: 256 > > HugePages_Free: 0 > > HugePages_Rsvd: 0 > > HugePages_Surp: 0 > > Hugepagesize: 2048 kB > > DirectMap4k: 22000 kB > > DirectMap2M: 25133056 kB > > Regards, > Keith > > Regards, Keith
