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On sf-001 and sf-002 with disk platters:
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# Does not survive reboot XXX
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# sf-001 sf-002
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echo 65536 > /sys/block/sdb/queue/nr_requests
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echo 65536 > /sys/block/sdc/queue/nr_requests
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echo 65536 > /sys/block/sdd/queue/nr_requests
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# sf-001 sf-002
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echo 8192 > /sys/block/sdb/queue/read_ahead_kb
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echo 8192 > /sys/block/sdc/queue/read_ahead_kb
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echo 8192 > /sys/block/sdd/queue/read_ahead_kb
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# MTU 9000 for Ceph
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# sf-001 sf-002
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ip link set dev eno2 mtu 9000
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ip link set dev enp134s0f1 mtu 9000
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# sf-003
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ip link set dev eno2 mtu 9000
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ip link set dev enp216s0f0 mtu 9000
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# sf-004
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ip link set dev eno2 mtu 9000
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ip link set dev enp216s0f1 mtu 9000
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# On all sf-001 sf-002 sf-003 sf-004
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# XXX fail
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#ip link set dev bond0 mtu 9000
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ifconfig bond0 mtu 9000
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# Only use 3 mon for Ceph. So remove it from sf-001
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# Create 2 OSD per NVMe ?
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##############################################################################
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# sysctl.conf possibilities from:
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# http://tracker.ceph.com/projects/ceph/wiki/Tuning_for_All_Flash_Deployments
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# disable TIME_WAIT.. wait ..
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net.ipv4.tcp_tw_recycle = 1
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net.ipv4.tcp_tw_reuse = 1
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# Controls the use of TCP syncookies
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net.ipv4.tcp_syncookies = 0
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# double amount of allowed conntrack
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net.netfilter.nf_conntrack_max = 2621440
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net.netfilter.nf_conntrack_tcp_timeout_established = 1800
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# Disable netfilter on bridges.
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net.bridge.bridge-nf-call-ip6tables = 0
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net.bridge.bridge-nf-call-iptables = 0
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net.bridge.bridge-nf-call-arptables = 0
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# Controls the maximum size of a message, in bytes
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kernel.msgmnb = 65536
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# Controls the default maxmimum size of a mesage queue
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kernel.msgmax = 65536
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# Controls the maximum shared segment size, in bytes
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kernel.shmmax = 68719476736
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# Controls the maximum number of shared memory segments, in pages
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kernel.shmall = 4294967296
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##############################################################################
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# Increase PG ? Currently at 256.
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# Is scrubbing enabled?
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##########################
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# sample:
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ceph --admin-daemon /var/run/ceph/ceph-osd.0.asok config show | grep thread
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ceph tell osd.* injectargs '--osd_disk_threads 4'
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# Resulted in this line for each OSD (16 total):
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osd.0: osd_disk_threads = '4' rocksdb_separate_wal_dir = 'false' (not observed, change may require restart)
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# http://xiaoquqi.github.io/blog/2015/06/28/ceph-performance-optimization-summary/
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|
# Turn off NUMA. Add to grub kernel boot line:
|
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|
|
numa=off
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|
|
# Run
|
|
|
|
|
update-grub
|
|
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|
|
# With NUMA enabled (from dmesg):
|
|
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|
|
[Wed Jul 11 15:52:46 2018] NUMA: Initialized distance table, cnt=2
|
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|
|
|
[Wed Jul 11 15:52:46 2018] NUMA: Node 0 [mem 0x00000000-0x7fffffff] + [mem 0x100000000-0x87fffffff] -> [mem 0x00000000-0x87fffffff]
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|
|
[Wed Jul 11 15:52:46 2018] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl
|
|
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|
|
[Wed Jul 11 15:52:46 2018] pci_bus 0000:00: on NUMA node 0
|
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|
|
etc.
|
|
|
|
|
|
|
|
|
|
# CGroup
|
|
|
|
|
# Pin each OSD to a CPU, somehow
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# Increase default values in Ceph config
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# Create fast pool from command line:
|
|
|
|
|
ceph osd crush rule create-replicated <rule-name> <root> <failure-domain> <class>
|
|
|
|
|
ceph osd crush rule create-replicated fast default host nvme
|
|
|
|
|
# and? Didnt appear in proxmox interface
|
|
|
|
|
# Then create a pool in the web gui.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# Then do this to have pool use new rule:
|
|
|
|
|
ceph osd pool set nvmepool crush_rule fast
|
|
|
|
|
# nope
|
