backlog也就是syn queue由三方面共同决定，listen函数的backlog参数，somaxconn，tcp_max_syn_backlog 754接口的amd cpu内存控制器有限，插满三条会不稳定，可以尝试降频或变2T解决，参考 26094.pdf
July 2010 (2)
Sunday, July 18 2010
filesystem tuning - xfs
Sunday, July 18 2010. 计算机
database & big filesfor raid:mkfs.xfs -d sunit=xxx,swidth=xxx sunit = strip_size(byte) / 512 swidth = sunit * nr_raid_disksmount option:noatime,nodiratime,allocsize=128M allocsize help reduce fragmentationfrag check:xfs_bmap /path/to/filexfs_db -c frag -r /dev/sda3defrag:xfs_fsr -t […]
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