On 9/17/20 11:00 PM, Richard Purdie wrote:
Where we have images with PAM+systemd, serial login can be extremely slow. The load generated by key generation does slow down the rest of the boot process.
this is a good find. So I wonder if its because we have entropy starvation. I see that we do enable virtio-rng while launching qemu so something to look in this area perhaps.
Lower the priority level of these systemd services, since we'd prefer to have the rest of the system boot more effectively. This doesn't "solve" the slow systemd boot issues but does help. Signed-off-by: Richard Purdie <[email protected]> --- meta/recipes-connectivity/openssh/openssh/sshdgenkeys.service | 1 + meta/recipes-core/dropbear/dropbear/dropbearkey.service | 1 + 2 files changed, 2 insertions(+) diff --git a/meta/recipes-connectivity/openssh/openssh/sshdgenkeys.service b/meta/recipes-connectivity/openssh/openssh/sshdgenkeys.service index 603c33787f1..fd81793d511 100644 --- a/meta/recipes-connectivity/openssh/openssh/sshdgenkeys.service +++ b/meta/recipes-connectivity/openssh/openssh/sshdgenkeys.service @@ -6,3 +6,4 @@ RequiresMountsFor=/var /run ExecStart=@LIBEXECDIR@/sshd_check_keys Type=oneshot RemainAfterExit=yes +Nice=10 diff --git a/meta/recipes-core/dropbear/dropbear/dropbearkey.service b/meta/recipes-core/dropbear/dropbear/dropbearkey.service index c49053d57c7..71a12a6110c 100644 --- a/meta/recipes-core/dropbear/dropbear/dropbearkey.service +++ b/meta/recipes-core/dropbear/dropbear/dropbearkey.service @@ -11,3 +11,4 @@ Type=oneshot ExecStart=@BASE_BINDIR@/mkdir -p ${DROPBEAR_RSAKEY_DIR} ExecStart=@SBINDIR@/dropbearkey -t rsa -f ${DROPBEAR_RSAKEY_DIR}/dropbear_rsa_host_key RemainAfterExit=yes +Nice=10
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