Arm2Arm: Februar 2017

Dienstag, 28. Februar 2017

Cleanup disk nicely

During the disklessinstalation often I have troubles with partitions and logical volumes.
Before creating new OS better to cleanup the disk:

scrub -p dod /dev/sdb

or for the large disks:

scrub -p dod /dev/sdb -s 1G

Sonntag, 26. Februar 2017

Impressive power boost by Moto Z power mod

Moto Z is one of the best smartphones for the moment. It comes with daydream support and many "Mods".
With 4k video streaming, several vr360 sessions it is still alive!!! 1day 20hours wow!

Donnerstag, 23. Februar 2017

Smartctl info for nvme

nvme smart-log /dev/nvme0

Smart Log for NVME device:nvme0 namespace-id:ffffffff
critical_warning                    : 0
temperature                         : 26 C
available_spare                     : 100%
available_spare_threshold           : 10%
percentage_used                     : 0%
data_units_read                     : 174,995
data_units_written                  : 283,289
host_read_commands                  : 2,327,186
host_write_commands                 : 842,433
controller_busy_time                : 2
power_cycles                        : 2
power_on_hours                      : 2
unsafe_shutdowns                    : 0
media_errors                        : 0
num_err_log_entries                 : 0
Warning Temperature Time            : 0
Critical Composite Temperature Time : 0
Temperature Sensor 1                : 26 C
Temperature Sensor 2                : 47 C
Temperature Sensor 3                : 0 C
Temperature Sensor 4                : 0 C
Temperature Sensor 5                : 0 C
Temperature Sensor 6                : 0 C
Temperature Sensor 7                : 0 C
Temperature Sensor 8                : 0 C

Mittwoch, 22. Februar 2017

SSD Samsung 850 EVO 256GB performance

Empty, new SSD with CrystalDiskMark 3.0.2.

Donnerstag, 9. Februar 2017

Windows 7: PCI-e SSD vs striped WD 10K disks vs striped SSD

Intel PCI-E SSD P3600
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

           Sequential Read : 1318.342 MB/s
          Sequential Write : 1215.438 MB/s
         Random Read 512KB : 1021.725 MB/s
        Random Write 512KB : 1231.051 MB/s
    Random Read 4KB (QD=1) :    37.135 MB/s [ 9066.1 IOPS]
   Random Write 4KB (QD=1) :   297.593 MB/s [ 72654.6 IOPS]
   Random Read 4KB (QD=32) :   679.819 MB/s [165971.4 IOPS]
Random Write 4KB (QD=32) :   525.391 MB/s [128269.4 IOPS]

Test : 1000 MB [P: 0.0% (0.1/1117.8 GB)] (x5)
Date : 2017/02/09 18:19:36
    OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)

Striped 2x Crusial SSD disks

-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

           Sequential Read :   706.492 MB/s
          Sequential Write :   374.625 MB/s
         Random Read 512KB :   657.431 MB/s
        Random Write 512KB :   146.501 MB/s
    Random Read 4KB (QD=1) :    25.487 MB/s [ 6222.4 IOPS]
   Random Write 4KB (QD=1) :    66.833 MB/s [ 16316.8 IOPS]
   Random Read 4KB (QD=32) :   405.031 MB/s [ 98884.4 IOPS]
Random Write 4KB (QD=32) :   209.108 MB/s [ 51051.7 IOPS]

Test : 1000 MB [C: 93.5% (211.7/226.5 GB)] (x5)
Date : 2017/02/09 18:13:42
    OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)

Striped 2x WD VelociRaptor 10K disks
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

           Sequential Read :   158.779 MB/s
          Sequential Write :   227.951 MB/s
         Random Read 512KB :    66.876 MB/s
        Random Write 512KB :   132.817 MB/s
    Random Read 4KB (QD=1) :     0.886 MB/s [   216.2 IOPS]
   Random Write 4KB (QD=1) :     3.226 MB/s [   787.5 IOPS]
   Random Read 4KB (QD=32) :     3.832 MB/s [   935.6 IOPS]
Random Write 4KB (QD=32) :     4.467 MB/s [ 1090.6 IOPS]

Test : 1000 MB [E: 45.7% (485.0/1061.8 GB)] (x5)
Date : 2017/02/09 17:57:49
    OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)

Donnerstag, 2. Februar 2017

lustre 2.9 on nvm PCI-E SSD Intel P3600 1.2TB

Ldiskfs on Intel SSD DC P3600 vs 8xSSD RAID10 with MR9271-8i

thrhi=16 dir_count=16 file_count=200000 mds-survey
Fri Feb 3 01:50:05 CET 2017 /usr/bin/mds-survey from c1701.cls
mdt 1 file 200000 dir 16 thr 16 create 329017.18 [ 329017.18, 329017.18] lookup 3167915.35 [ 3167915.35, 3167915.35] md_getattr 968143.25 [ 968143.25, 968143.25] setxattr 370109.92 [ 370109.92, 370109.92] destroy 235829.03 [ 235829.03, 235829.03]
done!

thrhi=16 dir_count=16 file_count=200000 mds-survey
Sun Jun 8 15:20:30 CEST 2014 /usr/bin/mds-survey from newmds01
mdt 1 file 200000 dir 16 thr 16 create 144417.16 [ 144417.16, 144417.16] lookup 2538618.74 [ 2538618.74, 2538618.74] md_getattr 1210573.15 [ 1210573.15, 1210573.15] setxattr 54542.92 [ 54994.01, 56996.07] destroy 89073.61 [ 76997.69, 76997.69]
done!

Interesting almost 2x faster than 8 SSDs(RAID10) in create operation. Actually create in RAID10 same as create on 4SSDs. So one can say 1-NVME is 2 times faster than 4xSSDs: nice!

The expensive setxattr is almost 7 times faster!!!

PCI-E SSD INTEL formating to 4K sector size

isdct show -intelssd

- Intel SSD DC P3600 Series CVMD550300L81P2CGN -

Bootloader : 8B1B0133
DevicePath : /dev/nvme0n1
DeviceStatus : Healthy
Firmware : 8DV101F0
FirmwareUpdateAvailable : The selected Intel SSD contains current firmware as of this tool release.
Index : 0
ModelNumber : INTEL SSDPEDME012T4
ProductFamily : Intel SSD DC P3600 Series
SerialNumber : CVMD550300L81P2CGN

Change sector size from 512(LBAFormat=0) to 4096(LBAFormat=3) :

isdct start -intelssd 0 -nvmeformat LBAFormat=3

Warning: you will loose all data.

Reset the device without rebooting:

echo 1 > /sys/class/nvme/nvme0/device/reset

nice we have now 4k sector size:

nvme list

nvme list
Node             SN                   Model                                    Version  Namespace Usage                      Format           FW Rev  
---------------- -------------------- ---------------------------------------- -------- --------- -------------------------- ---------------- --------
/dev/nvme0n1     CVMD550300L81P2CGN   INTEL SSDPEDME012T4                      1.0      1           1.20  TB /   1.20  TB      4 KiB +  0 B   8DV101F0

NVME intel performance on CentOS7.3

[root@c1701 ~]# hdparm -tT   --direct /dev/nvme0n1



/dev/nvme0n1:

 Timing O_DIRECT cached reads:   2512 MB in  2.00 seconds = 1255.72 MB/sec

 Timing O_DIRECT disk reads: 3604 MB in  3.00 seconds = 1200.83 MB/sec

[root@c1701 ~]# hdparm -tT   --direct /dev/nvme0n1



/dev/nvme0n1:

 Timing O_DIRECT cached reads:   2398 MB in  2.00 seconds = 1198.11 MB/sec

 Timing O_DIRECT disk reads: 3720 MB in  3.00 seconds = 1239.86 MB/sec

[root@c1701 ~]#

Lustrefs 2.9 migrate data from OST

One of the osts is full, we got a new ost,
let us migrate:

lfs find /archive -obd arch-OST0001_UUID -type f -size +1M | lfs_migrate -y

Arm2Arm