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以下操作系统内核和启动参数通常由sysadmin配置。
配置内核参数，如下所示。
net.ipv4.ip_local_port_range = 9000 65535
kernel.sysrq = 1
kernel.panic_on_oops = 1
kernel.panic = 5
kernel.hung_task_timeout_secs = 3600
kernel.hung_task_panic = 1
vm.oom_dump_tasks = 1
kernel.softlockup_panic = 1
fs.file-max = 640000
kernel.msgmnb = 7000000
kernel.sched_min_granularity_ns = 10000000
kernel.sched_wakeup_granularity_ns = 15000000
kernel.numa_balancing=0
vm.max_map_count = 1048576
net.ipv4.tcp_max_tw_buckets = 10000
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_keepalive_time = 30
net.ipv4.tcp_keepalive_probes = 9
net.ipv4.tcp_keepalive_intvl = 30
net.ipv4.tcp_retries2 = 80
kernel.sem = 32000 1024000000 500 32000
kernel.shmall = 52805669
kernel.shmmax = 18446744073692774399
sys.fs.file-max = 6536438
net.core.wmem_max = 21299200
net.core.rmem_max = 21299200
net.core.wmem_default = 21299200
net.core.rmem_default = 21299200
net.ipv4.tcp_rmem = 8192 250000 16777216
net.ipv4.tcp_wmem = 8192 250000 16777216
net.core.somaxconn = 65535
vm.min_free_kbytes = 5270325
net.core.netdev_max_backlog = 65535
net.ipv4.tcp_max_syn_backlog = 65535
net.ipv4.tcp_syncookies = 1
vm.overcommit_memory = 0
net.ipv4.tcp_retries1 = 5
net.ipv4.tcp_syn_retries = 5
##NEW
kernel.sched_autogroup_enabled=0
kernel.sched_min_granularity_ns=2000000
kernel.sched_latency_ns=10000000
kernel.sched_wakeup_granularity_ns=5000000
kernel.sched_migration_cost_ns=500000
vm.dirty_background_bytes=33554432
kernel.shmmax=21474836480
net.ipv4.tcp_timestamps = 0
net.ipv6.conf.all.disable_ipv6=1
net.ipv6.conf.default.disable_ipv6=1
net.ipv4.tcp_keepalive_time=600
net.ipv4.tcp_keepalive_probes=3
kernel.core_uses_pid=1
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调优服务
以下为必填项。
服务器必须运行throughput-performance配置文件：
[...]$ tuned-adm profile throughput-performance
throughput-performance配置文件是广泛适用的调优，它为各种常见服务器工作负载提供卓越的性能。
其他不太适合openGauss和MOT服务器的配置可能会影响MOT的整体性能，包括：平衡配置、桌面配置、延迟性能配置、网络延迟配置、网络吞吐量配置和节能配置。
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启动调优
在内核启动参数中添加iommu.passthrough=1。
在pass-through模式下运行时，适配器需要DMA转换到内存，从而提高性能。
