Re: [lustre-discuss] About Lustre small files performace(8k) improve

2023-03-27 Thread Andreas Dilger via lustre-discuss
Are your performance tests on NFS or on native Lustre clients? Native Lustre clients will likely be faster, and with many clients they can create files in parallel, even in the same directory. With a single NFS server they will be limited by the VFS locking for a single directory. Are you

Re: [lustre-discuss] About Lustre small files performace(8k) improve

2023-03-27 Thread Cameron Harr via lustre-discuss
I'll assume here you're referring to MPI-IO, which is not really a "feature" but a way to perform parallel I/O using the message passing interface (MPI) stack. There can also be different interpretations of what MPI-IO exactly means: many HPC applications (and benchmarks such as IOR) use MPI

[lustre-discuss] About Lustre small files performace(8k) improve

2023-03-18 Thread 王烁斌 via lustre-discuss
Hi all, This is my Lustre FS. UUID 1K-blocksUsed Available Use% Mounted on ltfs-MDT_UUID 307826072 36904 281574768 1% /mnt/lfs[MDT:0] ltfs-MDT0001_UUID 307826072 36452 281575220 1% /mnt/lfs[MDT:1] ltfs-MDT0002_UUID 307826072