diff options
author | Steven Noonan <steven@uplinklabs.net> | 2017-01-11 17:13:05 -0800 |
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committer | Steven Noonan <steven@uplinklabs.net> | 2017-01-18 06:06:16 -0800 |
commit | 61b0832e4bc7ea2867245bfd2ebf006f02da6dd7 (patch) | |
tree | ef024af2fbccb5aa6ca07209d201bbaf7a78d5e2 /web/dashboard_info.js | |
parent | cb3a27038b8a6e332d76b9c9b30f1b752d998ab6 (diff) |
add support for tracking NUMA locality metrics
Note that the 'hit' and 'miss' metrics are not used, because they are
sums of other metrics in the same file.
Signed-off-by: Steven Noonan <steven@uplinklabs.net>
Diffstat (limited to 'web/dashboard_info.js')
-rw-r--r-- | web/dashboard_info.js | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/web/dashboard_info.js b/web/dashboard_info.js index bb5f2d0231..24a579cfe8 100644 --- a/web/dashboard_info.js +++ b/web/dashboard_info.js @@ -262,6 +262,10 @@ netdataDashboard.submenu = { info: 'Kernel Same-page Merging (KSM) performance monitoring, read from several files in <code>/sys/kernel/mm/ksm/</code>. KSM is a memory-saving de-duplication feature in the Linux kernel (since version 2.6.32). The KSM daemon ksmd periodically scans those areas of user memory which have been registered with it, looking for pages of identical content which can be replaced by a single write-protected page (which is automatically copied if a process later wants to update its content). KSM was originally developed for use with KVM (where it was known as Kernel Shared Memory), to fit more virtual machines into physical memory, by sharing the data common between them. But it can be useful to any application which generates many instances of the same data.' }, + 'mem.numa': { + info: 'Non-Uniform Memory Access (NUMA) is a hierarchical memory design the memory access time is dependent on locality. Under NUMA, a processor can access its own local memory faster than non-local memory (memory local to another processor or memory shared between processors). The individual metrics are described in the <a href="https://www.kernel.org/doc/Documentation/numastat.txt" target="_blank">Linux kernel documentation</a>.' + }, + 'ipv4.ecn': { info: '<a href="https://en.wikipedia.org/wiki/Explicit_Congestion_Notification" target="_blank">Explicit Congestion Notification (ECN)</a> is a TCP extension that allows end-to-end notification of network congestion without dropping packets. ECN is an optional feature that may be used between two ECN-enabled endpoints when the underlying network infrastructure also supports it.' }, |