mirror of https://github.com/status-im/consul.git
32 lines
1.3 KiB
Markdown
32 lines
1.3 KiB
Markdown
---
|
|
layout: "docs"
|
|
page_title: "Frequently Asked Questions"
|
|
sidebar_current: "docs-faq"
|
|
---
|
|
|
|
# Frequently Asked Questions
|
|
|
|
## Q: Why is virtual memory usage high?
|
|
|
|
Consul makes use of [LMDB](http://symas.com/mdb/) internally for various data
|
|
storage purposes. LMDB relies on using memory-mapping, a technique in which
|
|
a sparse file is represented as a contiguous range of memory. Consul configures
|
|
high limits for these file sizes, and as a result relies on a large chunks of
|
|
virtual memory to be allocated. However, in practice the limits are much larger
|
|
than any realistic deployment of Consul would ever use, and the resident memory or
|
|
physical memory used is much lower.
|
|
|
|
## Q: What is Checkpoint? / Does Consul call home?
|
|
|
|
Consul makes use of a HashiCorp service called [Checkpoint](http://checkpoint.hashicorp.com)
|
|
which is used to check for updates and critical security bulletins.
|
|
Only anonymous information is sent to Checkpoint, and cannot be used to
|
|
identify the user or host. An anonymous ID is sent which helps de-duplicate
|
|
warning messages and can be disabled. Using the Checkpoint service is optional
|
|
and can be disabled.
|
|
|
|
See [`disable_anonymous_signature`](/docs/agent/options.html#disable_anonymous_signature)
|
|
and [`disable_update_check`](/docs/agent/options.html#disable_update_check).
|
|
|
|
|