After analysis, our cluster used compression, but did not use isal during compression. The compilation of ISAL compress in the current code depends on the macro HAVE_NASM_X64_AVX2. However, the macro HAVE_NASM_X64_AVX2 has been removed, resulting in the compression not using ISAL even if the compressor_zlib_isal parameter is set to true. At 2023-12-06 09:51:42, "Tony Yao" <yaoguo_tao@163.com> wrote:

Hi，

Recently, I upgraded Ceph from 15.2.16 to 17.2.6, but I found that OSD CPU usage increased from 30% to 90% or more, and OSD subop_w_latency increased from 600us to 5ms. This is incredible.

My hardware environment:

12 nodes x 12 NVMe (Intel P4510 4T)

I tried to set the OSD configuration to the default value and saw no improvement either.

Have you ever encountered this problem？ What might have gone wrong?

Best regards, Tony Yao _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io