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
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cache.rs	proxmox-rrd: use a journal to reduce amount of bytes written	2021-10-13 13:36:02 +02:00
lib.rs	proxmox-rrd: use a journal to reduce amount of bytes written	2021-10-13 13:36:02 +02:00
rrd.rs	proxmox-rrd: use a journal to reduce amount of bytes written	2021-10-13 13:36:02 +02:00