In a previous test, the SSD drive is about 30% faster than the SD card when it comes to LMS scanning about 12.000 tracks over a network share. The used SSD drive might be a factor in this test because it is not the fastest SSD on the marked. The Samsung EVO 120 Gb is listed quite low in this benchmark test:
[image: http://media.bestofmicro.com/5/1/394165/original/Seq-Write-Max.png] So, the scanning performance might get better with a faster SSD drive. However, I don't know if the increased cost for the SSD would justify the additional performance gain. Having said that, I was wondering what kind of read performance this SSD drive would bring. Below are the results: *# hdparm -Tt /dev/sda3* (SSD drive) /dev/sda3: Timing cached reads: 742 MB in 2.00 seconds = 370.55 MB/sec Timing buffered disk reads: 332 MB in 3.01 seconds = 110.45 MB/sec *# hdparm -Tt /dev/mmcblk0p3* (SD card) /dev/mmcblk0p3: Timing cached reads: 700 MB in 2.00 seconds = 349.42 MB/sec Timing buffered disk reads: 36 MB in 3.04 seconds = 11.83 MB/sec According to the HDPARM manual, the first line (cached reads) are an indication what the performance is of the WB hardware (processor, memory, etc). But the second line (buffered disk reads) is the performance of the disk. Here we see a significant boost in performance on the SSD drive. I borrowed a WB to a friend who has a 50.000+ library, and he complained about the remote performance (SD card used during these tests). He used a Samsung Android smartphone with the Logitech remote and he found it was sometimes waiting for several seconds before the remote got responsive again. This was the main reason behind the SSD drive test. I wonder how this system will perform at his house with his library. To be continued... Are we eventually going to move to a WB setup with an SSD drive with CSOS or will we stick to an SD card? I'm now more or less temped to change the hardware jumpers on the WB to select the SATA device for booting. I figured it can't be difficult to modify the current CSOS image and have it boot completely from an SSD drive. 1 x SB3, 1 x SB Boom, 1 x SB Radio and 2 x SB Touch - all wireless 1 x Wandboard Dual behind the bedroom ceiling 1 x Wandboard Dual for 'msqueeze' (http://www.msqueeze.co.nf/index.html) project ReadyNAS NVX running LMS 7.7.3. w iTunes plugin iPeng 7 on iPhone. SqueezePad & iPeng 7 on iPad. http://www.last.fm/user/phibon ------------------------------------------------------------------------ Pascal Hibon's Profile: http://forums.slimdevices.com/member.php?userid=7969 View this thread: http://forums.slimdevices.com/showthread.php?t=99395 _______________________________________________ unix mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/unix
