On 4/10/2014 9:40 PM, daiguochao wrote: > Dear Stan, I can't send email to you.So I leave a message here.I hope not to > bother you. > Thank you for your kind assistance. I received all of the ones you sent to the list and that should always be the case. One that you sent directly to me was rejected but I think I've fixed that now. And I think my delayed reply made things seem worse than they are. Anyway, Dave replied while I was typing my last response. He'll be much more able to assist you. Your problem seems beyond the edge of my knowledge. Cheers, Stan > In accordance with your suggestion, we executed "echo 3 > > /proc/sysm/drop_caches" for trying to release vfs dentries and inodes. > Really, > our lost memory came back. But we learned that the memory of vfs dentries > and inodes is distributed from slab. Please check our system "Slab: 509708 > kB" from /proc/meminfo, and it seems only be took up 500MB and xfs_buf take > up 450MB among. And /proc/meminfo indicated that our system memory is > anomalous, there is about 10GB out of the statistics. We want to know how > the system could observe the usage amount of vfs dentries and iodes through > the system interface. If the memory usage of system is not reflected in > /proc/meminfo as we can not find the statistics, and we thought it as a bug > of xfs. > > My vm.vfs_cache_pressure of linux system is 100. We think that the system > will proactively take the memory back when the memory is not enough, rather > than oom-killer kills our work process. Our datas of /proc/meminfo occurred > during the system problem as below: > 130> cat /proc/meminfo > MemTotal: 12173268 kB > MemFree: 223044 kB > Buffers: 244 kB > Cached: 4540 kB > SwapCached: 0 kB > Active: 1700 kB > Inactive: 5312 kB > Active(anon): 1616 kB > Inactive(anon): 1128 kB > Active(file): 84 kB > Inactive(file): 4184 kB > Unevictable: 0 kB > Mlocked: 0 kB > SwapTotal: 0 kB > SwapFree: 0 kB > Dirty: 0 kB > Writeback: 0 kB > AnonPages: 2556 kB > Mapped: 1088 kB > Shmem: 196 kB > Slab: 509708 kB > SReclaimable: 7596 kB > SUnreclaim: 502112 kB > KernelStack: 1096 kB > PageTables: 748 kB > NFS_Unstable: 0 kB > Bounce: 0 kB > WritebackTmp: 0 kB > CommitLimit: 6086632 kB > Committed_AS: 9440 kB > VmallocTotal: 34359738367 kB > VmallocUsed: 303488 kB > VmallocChunk: 34359426132 kB > HardwareCorrupted: 0 kB > AnonHugePages: 0 kB > HugePages_Total: 0 > HugePages_Free: 0 > HugePages_Rsvd: 0 > HugePages_Surp: 0 > Hugepagesize: 2048 kB > DirectMap4k: 6152 kB > DirectMap2M: 2070528 kB > DirectMap1G: 10485760 kB > > Best Regards, > > Guochao > > > > -- > View this message in context: http://xfs.9218.n7.nabble.com/10GB-memorys-occupied-by-XFS-tp35015p35016.html > Sent from the Xfs - General mailing list archive at Nabble.com. > > _______________________________________________ > xfs mailing list > xfs@xxxxxxxxxxx > http://oss.sgi.com/mailman/listinfo/xfs > _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
