Commit Graph

28 Commits

Author SHA1 Message Date
Thomas Lamprecht ac20cb1f65 rrd: avoid intermediate index, directly loop over data
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2022-02-15 07:59:55 +01:00
Fabian Grünbichler 9a37bd6c84 tree-wide: fix needless borrows
found and fixed via clippy

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
2021-12-30 13:55:33 +01:00
Dietmar Maurer 25877d05ac update to proxmox-sys 0.2 crate
- imported pbs-api-types/src/common_regex.rs from old proxmox crate
- use hex crate to generate/parse hex digest
- remove all reference to proxmox crate (use proxmox-sys and
  proxmox-serde instead)

Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
2021-11-24 10:32:27 +01:00
Dominik Csapak 5c1cabdea1 rrd: use saturating_sub to avoid underflow
Without this, the tests fail in debug mode.
Also having start (u64) underflow to a value greater than end does
not really make sense

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
2021-10-28 12:54:54 +02:00
Dietmar Maurer fea950155f proxmox-rrd: improve dev docs
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
2021-10-19 11:17:09 +02:00
Dietmar Maurer 934c8724e2 proxmox-rrd: add option to avoid page cache for load/save
use fadvice(.., POSIX_FADV_DONTNEED) for RRD files. We read those files only once,
and always rewrite them.

Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
2021-10-19 11:17:09 +02:00
Dietmar Maurer 98eb435d90 proxmox-rrd: use syncfs after writing rrd files
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
2021-10-19 11:17:09 +02:00
Dietmar Maurer 7484fce24d proxmox-rrd: cleanup - use slot_end_time() 2021-10-14 16:29:00 +02:00
Dietmar Maurer f28a713e2b proxmox-rrd: cleanup - use staturating_add instead of if/else 2021-10-14 16:10:55 +02:00
Dietmar Maurer a9017805b7 proxmox-rrd: improve dev docs 2021-10-14 11:53:54 +02:00
Dietmar Maurer d531c7ae61 proxmox-rrd: add more regression tests 2021-10-14 10:55:12 +02:00
Dietmar Maurer 7df1580fa6 proxmox-rrd: add regression tests and two minor fixes 2021-10-14 10:17:07 +02:00
Dietmar Maurer bacc99c7f8 proxmox-rrd: add more commands to the rrd cli tool
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2021-10-13 13:36:02 +02:00
Dietmar Maurer 6728d0977b proxmox-rrd: rename last_counter to last_value
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2021-10-13 13:36:02 +02:00
Dietmar Maurer bff7c027c9 proxmox-rrd: protect against negative update time
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2021-10-13 13:36:02 +02:00
Dietmar Maurer 79b3113361 proxmox-rrd: new helpers: slot, slot_start_time & slot_end_time
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2021-10-13 13:36:02 +02:00
Dietmar Maurer 5885767b91 proxmox-rrd: avoid expensive modulo (%) inside loop
Modulo is very slow, so we try to avoid it inside loops.

Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2021-10-13 13:36:02 +02:00
Dietmar Maurer 03664514ab proxmox-rrd: support CF::Last
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2021-10-13 13:36:02 +02:00
Dietmar Maurer 426dda0730 proxmox-rrd: extract_data: include values from current slot
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2021-10-13 13:36:02 +02:00
Dietmar Maurer eb37d4ece2 proxmox-rrd: remove dependency to proxmox-rrd-api-types
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2021-10-13 13:36:02 +02:00
Dietmar Maurer 1198f8d4e6 proxmox-rrd: implement new CBOR based format
Storing much more data points now got get better graphs.

Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2021-10-13 13:36:02 +02:00
Dietmar Maurer 1d44f175c6 proxmox-rrd: use a journal to reduce amount of bytes written
Append pending changes in a simple text based format that allows for
lockless appends as long as we stay below 4 KiB data per write.

Apply the journal every 30 minutes and on daemon startup.

Note that we do not ensure that the journal is synced, this is a
perfomance optimization we can make as the kernel defaults to
writeback in-flight data every 30s (sysctl vm/dirty_expire_centisecs)
anyway, so we lose at max half a minute of data on a crash, here one
should have in mind that we normally expose 1 minute as finest
granularity anyway, so not really much lost.

Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2021-10-13 13:36:02 +02:00
Dietmar Maurer 3cc23ca6cc proxmox-rrd: cleanup error handling 2021-10-07 08:01:12 +02:00
Dietmar Maurer 3def6bfc64 proxmox-rrd: use log crate instead of eprintln, avoid duplicate logs 2021-10-06 18:19:22 +02:00
Dietmar Maurer 18e8bc17e4 proxmox-rrd: fix update (do not update) when time is in the past 2021-10-06 18:01:48 +02:00
Dietmar Maurer 0191759316 proxmox-rrd: improve developer docs 2021-10-06 12:19:54 +02:00
Dietmar Maurer d1c3bc5350 split out RRD api types into proxmox-rrd-api-types crate 2021-10-06 09:49:51 +02:00
Dietmar Maurer 09340f28f5 move RRD code into proxmox-rrd crate 2021-10-06 08:13:28 +02:00