diff options
Diffstat (limited to 'src/readahead/readahead-replay.c')
| -rw-r--r-- | src/readahead/readahead-replay.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/readahead/readahead-replay.c b/src/readahead/readahead-replay.c index 00d57c3d7..0c739c82b 100644 --- a/src/readahead/readahead-replay.c +++ b/src/readahead/readahead-replay.c @@ -186,7 +186,13 @@ static int replay(const char *root) { if (on_ssd) prio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0); else - prio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_RT, 7); + /* We are not using RT here, since we'd starve IO that + we didn't record (which is for example blkid, since + its disk accesses go directly to the block device and + are thus not visible in fallocate) to death. However, + we do ask for an IO prio that is slightly higher than + the default (which is BE. 4) */ + prio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 2); if (ioprio_set(IOPRIO_WHO_PROCESS, getpid(), prio) < 0) log_warning("Failed to set IDLE IO priority class: %m"); |