slub: unable to allocate memory on node -1这个错误信息通常出现在Linux内核的内存分配过程中,特别是在使用SLUB(Simplified Linux Memory Allocator)分配器时。SLUB是Linux内核中用于管理内存的一种高效且灵活的分配器,它旨在优化内存分配和释放的性能。
k8s 集群节点 SLUB: Unable to allocate memory on node -1 cgroup 内存泄露问题 1.原因 cgroup 的 kmem account 特性在 3.x 内核上有内存泄露问题,如果开启了 kmem account 特性 会导致可分配内存越来越少,直到无法创建新 pod 或节点异常 几点解释: kmem account 是cgroup 的一个扩展,全称CONFIG_MEMCG_KMEM,...
K8s/Docker works without a hitch on Ubuntu 16.04. Actual behavior When dockers are running on the server, the following errors are generated by dmesg. [319003.331580] SLUB: Unable to allocate memory on node -1 (gfp=0x2088020) [319003.331587] cache: mnt_cache(9946:ea4c61d01895b46bf04a9b8...
SLUB: Unable to allocate memory on node -1 (gfp=0x20)in/var/log/messages. Docker/Kubernetes environment is showing errors regardingSLUBand memory. Environment Red Hat Enterprise Linux 7 kernel-3.10.0-1062.1.2.el7 and earlier kernels Subscriber exclusive content ...
related to the file system executingwritepage. At the same time, before and after the performance jitter was captured, thedmesgoutput contained a large amount of information about “SLUB: Unable to allocate memory on node -1”. This message occurred even when the node had sufficient memory. ...
Memory and disk statistics from the load information The only negative indicator was the message, “SLUB: Unable to allocate memory on node -1” in the output of thedmesgcommand. Issue analysis We usedfuncslowerinperf-toolsto trace kernel functions that were executed slowly and adjusted the thres...
Kernel memory overwrite attempt detected to SLUB object Linux内核有一个usercopy whitelist机制,只允许这里面的region来做usercopy。如果是用kmem_cache_create申请的kmem_ sed linux内核 内存空间 原创 寻找繁星 2022-10-14 15:07:03 374阅读 k8s SLUB: Unable to allocate memory on node -1 错误 Try...
__ratelimit(&slub_oom_rs)) return; pr_warn("SLUB: Unable to allocate memory on node %d, gfp=%#x(%pGg)\n", nid, gfpflags, &gfpflags); pr_warn(" cache: %s, object size: %u, buffer size: %u, default order: %u, min order: %u\n", s->name, s->object_size, s->size, ...
所以slab管理器提供一个共享object功能,注意,这里说的共享只能是同一个node内的内存,不同node的object是不能被共享的。当CPU 0释放部分object到shared array_cache后,CPU 1在合适情况下就可以直接拷贝到其cpu_cache上,避免通过伙伴系统申请。 @ num:每个slab中object的数量。
我在去年5月(2019年)的"最后在Java 8 - 中支持Docker！“中提到，Java 10的新发展(支持在Java...