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journal: Set the default keep free value to 15% (up from 5%)

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As some SSDs are still seeing performance degredation when
reaching 85% usage the default value of 5% seems a little low.

Set this to 15% by default.
This commit is contained in:
Colin Guthrie 2013-04-30 11:48:11 +01:00 committed by Lennart Poettering
parent 417b1a62ed
commit 8621b1109b
2 changed files with 2 additions and 2 deletions
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2
man/journald.conf.xml
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@ -246,7 +246,7 @@
configured in
<varname>SystemMaxUse=</varname> and
<varname>RuntimeMaxUse=</varname> is
available. Defaults to 5% of the size
available. Defaults to 15% of the size
of the respective file
system. <varname>SystemMaxFileSize=</varname>
and

2
src/journal/journal-file.c
View file

@ -2769,7 +2769,7 @@ void journal_default_metrics(JournalMetrics *m, int fd) {
if (m->keep_free == (uint64_t) -1) {
if (fs_size > 0) {
m->keep_free = PAGE_ALIGN(fs_size / 20); /* 5% of file system size */
m->keep_free = PAGE_ALIGN(fs_size * 3 / 20); /* 15% of file system size */
if (m->keep_free > DEFAULT_KEEP_FREE_UPPER)
m->keep_free = DEFAULT_KEEP_FREE_UPPER;