同机的其他应用就非常慢。 乐趣与焦灼一起来了,打开 mongostat、mongotop 也没发现异常。 查了一通是NUMA。忽然想起来MongoDB 运行起来时给出的警告了。 当天去机房,修改BIOS => Memory => Scoket Inter leave 为 Non-NUMA即可。 如图: 重启机器,MongoDB进程CPU在 0附近了。 --- 微软NUMA方案:http://techn...
The non-NUMA option in BIOS setup, if there is one, is likely to be default. It usually does something like what John described, alternating cache lines between memory banks, so that placement of threads makes little difference, but a single thread should use various QPI channels...
In particular it would be important to know the maximum "non-NUMA-awareness" penalty on the two socket system. I am afraid that effectively a two-socket system would have "lower" effective bandwidth in non-NUMA-aware code than a single socket one ?
NUMA(Non-Uniform Memory Access) 由于SMP在扩展能力上的限制,人们开始探究如何进行有效地扩展从而构建大型系统的技术,NUMA就是这种努力下的结果之一。利用NUMA技术,可以把几十个CPU(甚至上百个CPU)组合在一个服务器内。NUMA服务器的基本特征是具有多个CPU模块,每个CPU模块由多个CPU(如4个)组成,并且具有独立的本地内...
This setup minimizes the contention typically seen in non-NUMA architectures where multiple processors vie for the same memory resources. The localized memory model significantly enhances the speed and efficiency with which processors access and manipulate data, leading directly to performance improvements ...
NUMA(Non-Uniform Memory Access)非均匀内存访问架构是指多处理器系统中,内存的访问时间是依赖于处理器和内存之间的相对位置的。 这种设计里存在和处理器相对近的内存,通常被称作本地内存;还有和处理器相对远的内存, 通常被称为非本地内存。
docker run mongo fails on non-numa docker host with numactl: This system does not support NUMA policy and exit status code 1. I'll fix it ASAP and create PR to fix this issue. Reported by @henrjk in #11.
What is non-uniform memory access (NUMA)? Non-uniform memory access, or NUMA, is a method of configuring a cluster of microprocessors in amultiprocessingsystem so they can sharememorylocally. The idea is to improve the system's performance and allow it to expand as processing needs evolve. ...
Disclosed herein are system, method, and computer program product embodiments for managing non-uniform memory access (NUMA) in a database management system. An embodiment operates by receiving a request to load data from a disk into an in-memory database. An optimal one of the plurality of ...
NUMA架构下，不同socket之间的内存访问存在性能差异，包括延迟（latency）和吞吐量（throughput）都可能低于...