ceph after upgrade to 18.2.6 - observed slow operation indications in BlueStore

[arteck]

i have 5 nodes and one have a problem with

HEALTH_WARN: 1 OSD(s) experiencing slow operations in BlueStore

[global]
    auth_client_required = cephx
    auth_cluster_required = cephx
    auth_service_required = cephx
    cluster_network = 10.45.45.196/24
    debug_filestore = 0
    debug_mon = 0
    debug_osd = 0
    fsid = bff5932e-2db5-472e-80ac-bc47a5a0bbbb
    mon_allow_pool_delete = false
    mon_compact_on_start = true
    mon_host = 10.45.45.192 10.45.45.193 10.45.45.213 10.45.45.197 10.45.45.196
    mon_osd_down_out_interval = 900
    ms_bind_ipv4 = true
    ms_tcp_read_timeout = 60
    osd_deep_scrub_interval = 259200
    osd_max_scrubs = 2
    osd_memory_target = 8589934592
    osd_pool_default_min_size = 2
    osd_pool_default_size = 3
    osd_scrub_begin_hour = 0
    osd_scrub_begin_week_day = 0
    osd_scrub_during_recovery = true
    osd_scrub_end_hour = 12
    osd_scrub_end_week_day = 6
    osd_scrub_load_threshold = 1.0
    osd_scrub_max_interval = 259200
    osd_scrub_min_interval = 86400
    public_network = 10.45.45.196/24

any idea ??

i found a thread ceph 19.2.1 but the problem is in Squid not in Reef