I've set up my first system, and I'm having some serious performance issues with directory read operations - over NFS and locally.
Example:
[root@storage01 /mnt/Primary/qa/datafiles]# time ls -aFl
total 20019979
drwxr-xr-x 2 root wheel 26 Mar 23 10:07 ./
drwxrwxrwx 4 root wheel 5 Mar 23 09:27 ../
-rw-r--r-- 1 root wheel 1073741824 Mar 23 09:38 datafile1.dat
<snipped>
-rw-r--r-- 1 root wheel 1073741824 Mar 23 09:46 datafile9.dat
real 0m13.063s
user 0m0.008s
sys 0m0.002s
[root@storage01 /mnt/Primary/qa/datafiles]#
This is for most directories most of the time.
I'm running on a 64 bit 8 core box with 16 gigs of ram, and three of these:
Model Family: Seagate Barracuda Green (Adv. Format)
Device Model: ST2000DL003-9VT166
Drive write performance seems fine - building a bunch of files to md5sum and test some disk fail scenarios with.
Running default raidz ZFS as my mounted/shared filesystem.
Am I completely missing something? I don't expect lightning directory operations over NFS mounts, but it seems like something here is pretty wrong.
Another question - instructions suggest using a USB stick for for booting - which I am. Is it addressed after boot? If it has any impact on performance, I may just switch to a proper SSD on the SATA bus for this - especially given the apparent fragility of USB Flash. Maybe there is a suggested USB flash that might not suffer from the same fragility?
Thanks,
-Ben
Example:
[root@storage01 /mnt/Primary/qa/datafiles]# time ls -aFl
total 20019979
drwxr-xr-x 2 root wheel 26 Mar 23 10:07 ./
drwxrwxrwx 4 root wheel 5 Mar 23 09:27 ../
-rw-r--r-- 1 root wheel 1073741824 Mar 23 09:38 datafile1.dat
<snipped>
-rw-r--r-- 1 root wheel 1073741824 Mar 23 09:46 datafile9.dat
real 0m13.063s
user 0m0.008s
sys 0m0.002s
[root@storage01 /mnt/Primary/qa/datafiles]#
This is for most directories most of the time.
I'm running on a 64 bit 8 core box with 16 gigs of ram, and three of these:
Model Family: Seagate Barracuda Green (Adv. Format)
Device Model: ST2000DL003-9VT166
Drive write performance seems fine - building a bunch of files to md5sum and test some disk fail scenarios with.
Running default raidz ZFS as my mounted/shared filesystem.
Am I completely missing something? I don't expect lightning directory operations over NFS mounts, but it seems like something here is pretty wrong.
Another question - instructions suggest using a USB stick for for booting - which I am. Is it addressed after boot? If it has any impact on performance, I may just switch to a proper SSD on the SATA bus for this - especially given the apparent fragility of USB Flash. Maybe there is a suggested USB flash that might not suffer from the same fragility?
Thanks,
-Ben