Debian 9.5 takes longer to mount emmc than 8.7 did
I have been trying to chase down some boot performance issues for a little while now.
Previously we were running debian 8.7 with 4.4.54 kernel. our start up time is
systemd-analyze
Startup finished in 12.022s (kernel) + 20.214s (userspace) = 32.237s
Network is up and running(pingable) in ~30 seconds. Our application is up and running in 90 seconds.
We are updating our image to Debian 9.5 with 4.14.79 kernel for driver support with some new cell modems. We were able to get a similar boot time, but kernel takes a while to finish
systemd-analyze
Startup finished in 26.448s (kernel) + 11.155s (userspace) = 37.603s
Network is up and running in ~50 seconds. Our application is up and running in ~125 seconds.
I was looking through the kernel log and it looks like it took ~22 seconds to mount the emmc (Debian 9.5)
[ 2.130752] random: systemd-udevd: uninitialized urandom read (16 bytes read)
[ 25.872231] EXT4-fs (mmcblk1p1): mounted filesystem with ordered data mode. Opts: (null)
I checked one of the old 8.7 builds and it takes ~6 seconds to mount. I do see some errors so there may have been some underlying issues with our image, or how we flash the emmc.
[ 5.116499] pru-rproc: probe of 4a338000.pru1 failed with error -2
[ 11.087294] EXT4-fs (mmcblk1p1): INFO: recovery required on readonly filesystem
[ 11.087323] EXT4-fs (mmcblk1p1): write access will be enabled during recovery
[ 11.613937] EXT4-fs (mmcblk1p1): recovery complete
[ 11.614976] EXT4-fs (mmcblk1p1): mounted filesystem with ordered data mode. Opts: (null)
I was able to boot from an sd card and run e2fsck on emmc, with no reported errors.
OK, so my question is this. Does it seem like the boot performance could be from misaligned partition(s)? What else could I check to try and isolate where the issue(s) is(are)?
boot performance beagleboneblack
edited Dec 20 '18 at 16:59
Rui F Ribeiro
39.1k1479130
asked Dec 20 '18 at 16:21
Patrick Ciccone
11
add a comment |
I have been trying to chase down some boot performance issues for a little while now.
Previously we were running debian 8.7 with 4.4.54 kernel. our start up time is
systemd-analyze
Startup finished in 12.022s (kernel) + 20.214s (userspace) = 32.237s
Network is up and running(pingable) in ~30 seconds. Our application is up and running in 90 seconds.
We are updating our image to Debian 9.5 with 4.14.79 kernel for driver support with some new cell modems. We were able to get a similar boot time, but kernel takes a while to finish
systemd-analyze
Startup finished in 26.448s (kernel) + 11.155s (userspace) = 37.603s
Network is up and running in ~50 seconds. Our application is up and running in ~125 seconds.
I was looking through the kernel log and it looks like it took ~22 seconds to mount the emmc (Debian 9.5)
[ 2.130752] random: systemd-udevd: uninitialized urandom read (16 bytes read)
[ 25.872231] EXT4-fs (mmcblk1p1): mounted filesystem with ordered data mode. Opts: (null)
I checked one of the old 8.7 builds and it takes ~6 seconds to mount. I do see some errors so there may have been some underlying issues with our image, or how we flash the emmc.
[ 5.116499] pru-rproc: probe of 4a338000.pru1 failed with error -2
[ 11.087294] EXT4-fs (mmcblk1p1): INFO: recovery required on readonly filesystem
[ 11.087323] EXT4-fs (mmcblk1p1): write access will be enabled during recovery
[ 11.613937] EXT4-fs (mmcblk1p1): recovery complete
[ 11.614976] EXT4-fs (mmcblk1p1): mounted filesystem with ordered data mode. Opts: (null)
I was able to boot from an sd card and run e2fsck on emmc, with no reported errors.
OK, so my question is this. Does it seem like the boot performance could be from misaligned partition(s)? What else could I check to try and isolate where the issue(s) is(are)?
boot performance beagleboneblack
edited Dec 20 '18 at 16:59
Rui F Ribeiro
39.1k1479130
asked Dec 20 '18 at 16:21
Patrick Ciccone
11
add a comment |
I have been trying to chase down some boot performance issues for a little while now.
Previously we were running debian 8.7 with 4.4.54 kernel. our start up time is
systemd-analyze
Startup finished in 12.022s (kernel) + 20.214s (userspace) = 32.237s
Network is up and running(pingable) in ~30 seconds. Our application is up and running in 90 seconds.
We are updating our image to Debian 9.5 with 4.14.79 kernel for driver support with some new cell modems. We were able to get a similar boot time, but kernel takes a while to finish
systemd-analyze
Startup finished in 26.448s (kernel) + 11.155s (userspace) = 37.603s
Network is up and running in ~50 seconds. Our application is up and running in ~125 seconds.
I was looking through the kernel log and it looks like it took ~22 seconds to mount the emmc (Debian 9.5)
[ 2.130752] random: systemd-udevd: uninitialized urandom read (16 bytes read)
[ 25.872231] EXT4-fs (mmcblk1p1): mounted filesystem with ordered data mode. Opts: (null)
I checked one of the old 8.7 builds and it takes ~6 seconds to mount. I do see some errors so there may have been some underlying issues with our image, or how we flash the emmc.
[ 5.116499] pru-rproc: probe of 4a338000.pru1 failed with error -2
[ 11.087294] EXT4-fs (mmcblk1p1): INFO: recovery required on readonly filesystem
[ 11.087323] EXT4-fs (mmcblk1p1): write access will be enabled during recovery
[ 11.613937] EXT4-fs (mmcblk1p1): recovery complete
[ 11.614976] EXT4-fs (mmcblk1p1): mounted filesystem with ordered data mode. Opts: (null)
I was able to boot from an sd card and run e2fsck on emmc, with no reported errors.
OK, so my question is this. Does it seem like the boot performance could be from misaligned partition(s)? What else could I check to try and isolate where the issue(s) is(are)?
boot performance beagleboneblack
edited Dec 20 '18 at 16:59
Rui F Ribeiro
39.1k1479130
asked Dec 20 '18 at 16:21
Patrick Ciccone
11
I have been trying to chase down some boot performance issues for a little while now.
Previously we were running debian 8.7 with 4.4.54 kernel. our start up time is
systemd-analyze
Startup finished in 12.022s (kernel) + 20.214s (userspace) = 32.237s
Network is up and running(pingable) in ~30 seconds. Our application is up and running in 90 seconds.
We are updating our image to Debian 9.5 with 4.14.79 kernel for driver support with some new cell modems. We were able to get a similar boot time, but kernel takes a while to finish
systemd-analyze
Startup finished in 26.448s (kernel) + 11.155s (userspace) = 37.603s
Network is up and running in ~50 seconds. Our application is up and running in ~125 seconds.
I was looking through the kernel log and it looks like it took ~22 seconds to mount the emmc (Debian 9.5)
[ 2.130752] random: systemd-udevd: uninitialized urandom read (16 bytes read)
[ 25.872231] EXT4-fs (mmcblk1p1): mounted filesystem with ordered data mode. Opts: (null)
I checked one of the old 8.7 builds and it takes ~6 seconds to mount. I do see some errors so there may have been some underlying issues with our image, or how we flash the emmc.
[ 5.116499] pru-rproc: probe of 4a338000.pru1 failed with error -2
[ 11.087294] EXT4-fs (mmcblk1p1): INFO: recovery required on readonly filesystem
[ 11.087323] EXT4-fs (mmcblk1p1): write access will be enabled during recovery
[ 11.613937] EXT4-fs (mmcblk1p1): recovery complete
[ 11.614976] EXT4-fs (mmcblk1p1): mounted filesystem with ordered data mode. Opts: (null)
I was able to boot from an sd card and run e2fsck on emmc, with no reported errors.
OK, so my question is this. Does it seem like the boot performance could be from misaligned partition(s)? What else could I check to try and isolate where the issue(s) is(are)?
boot performance beagleboneblack
boot performance beagleboneblack
edited Dec 20 '18 at 16:59
Rui F Ribeiro
39.1k1479130
asked Dec 20 '18 at 16:21
Patrick Ciccone
11
edited Dec 20 '18 at 16:59
Rui F Ribeiro
39.1k1479130
asked Dec 20 '18 at 16:21
Patrick Ciccone
11
edited Dec 20 '18 at 16:59
Rui F Ribeiro
39.1k1479130
edited Dec 20 '18 at 16:59
Rui F Ribeiro
39.1k1479130
edited Dec 20 '18 at 16:59
Rui F Ribeiro
39.1k1479130
39.1k1479130
asked Dec 20 '18 at 16:21
Patrick Ciccone
11
asked Dec 20 '18 at 16:21
Patrick Ciccone
11
asked Dec 20 '18 at 16:21
Patrick Ciccone
11
11
add a comment |
add a comment |
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