Update 2014-04-06: Tests on the 64GB with a $10 Sabrent USB 3.0 Enclosure Added to the end The 64GB SSD has been my solid-state workhorse in my ZFS pool for a while. First, it was the L2ARC, then it was the ZIL. In fact, I used to have two, but I broke the connector off […]
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This SSD caught my eye as a ZIL. I wonder how it compares to my previously benchmarked (a number of times) Kingston SV100 64 GB SSD. I decided to remove it from the ZIL and try it out. I wanted to make sure I exercise the sequential writes (which is all I really care about […]
m using a couple of these for log devices (ZIL). I’ve benchmarked them before, but the system is way more stable (got rid of some old SATA cables etc). I removed them from the tank, and here are some dd benchmarks:
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server# dd if=/dev/zero of=/dev/gpt/tank_zil0 bs=4M count=32 32+0 records in 32+0 records out 134217728 bytes transferred in 0.823378 secs (163008623 bytes/sec) server# dd if=/dev/zero of=/dev/gpt/tank_zil0 bs=4M count=128 128+0 records in 128+0 records out 536870912 bytes transferred in 3.420138 secs (156973470 bytes/sec) server# dd if=/dev/zero of=/dev/gpt/tank_zil0 bs=4M count=1024 1024+0 records in 1024+0 records out 4294967296 bytes transferred in 26.639669 secs (161224498 bytes/sec) server# dd if=/dev/zero of=/dev/gpt/tank_zil1 bs=4M count=32 32+0 records in 32+0 records out 134217728 bytes transferred in 0.871419 secs (154022044 bytes/sec) server# dd if=/dev/zero of=/dev/gpt/tank_zil1 bs=4M count=128 128+0 records in 128+0 records out 536870912 bytes transferred in 3.344363 secs (160530097 bytes/sec) server# dd if=/dev/zero of=/dev/gpt/tank_zil1 bs=4k count=128 128+0 records in 128+0 records out 524288 bytes transferred in 0.015540 secs (33737700 bytes/sec) server# dd if=/dev/zero of=/dev/gpt/tank_zil1 bs=4k count=8192 8192+0 records in 8192+0 records out 33554432 bytes transferred in 0.957342 secs (35049580 bytes/sec) |
They’re roughly in the 150 MB/s range with large (4MB) records, and 32 […]
As formated out-of-the-box (58.9 GB FAT32):
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----------------------------------------------------------------------- CrystalDiskMark 3.0.2 x64 (C) 2007-2013 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] |
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Sequential Read : 174.009 MB/s Sequential Write : 81.310 MB/s Random Read 512KB : 108.777 MB/s Random Write 512KB : 0.706 MB/s Random Read 4KB (QD=1) : 6.190 MB/s [ 1511.2 IOPS] Random Write 4KB (QD=1) : 0.273 MB/s [ 66.6 IOPS] Random Read 4KB (QD=32) : 5.636 MB/s [ 1375.9 IOPS] Random Write 4KB (QD=32) : 0.176 MB/s [ 43.1 IOPS] |
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Test : 1000 MB [F: 0.0% (0.0/58.9 GB)] (x5) Date : 2013/10/17 23:10:11 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) |
After hard formatting as exFAT (with default 128kB clusters):
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----------------------------------------------------------------------- CrystalDiskMark 3.0.2 x64 (C) 2007-2013 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 172.350 MB/s Sequential Write : 85.570 MB/s Random Read 512KB : 108.509 MB/s Random Write 512KB : 0.623 MB/s Random Read 4KB (QD=1) : 6.079 MB/s [ 1484.2 IOPS] Random Write 4KB (QD=1) : 0.239 MB/s [ 58.4 IOPS] Random Read 4KB (QD=32) : 5.333 MB/s [ 1301.9 IOPS] Random Write 4KB (QD=32) : 0.258 MB/s [ 63.1 IOPS] Test : 1000 MB [F: 0.0% (0.0/58.9 GB)] (x5) Date : 2013/10/17 23:35:04 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) |
Got it from this slick deal. It actually performs better (on the reads) than advertised (advertised as 120MB/s), and slightly better on the writes (advertised as 70 MB/s). Update Oct 19 I ran some dd tests […]
Using Crystal Disk Mark and stock firmware (just got it yesterday). Drive label says firmware 1.02. Formated at NTFS with default settings. After upgrade to latest firmware (1.05): New firmware greatly improved queue depth of 32 (QD=32) performance. Be the first to like. Like Unlike
These are a couple of old 8GB (7.5GbB). Their specs are like so: Doing sequential read measurements (I have two of these SSD’s, one as tank_zil0 and one as tank_zil1): Doing sequential write measurements: I didn’t want to write directly to the raw device, as I didn’t want to delete the GPT partition table. Anyway, […]
Just rebuilt my ZFS pool using RAIDZ:
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NAME STATE READ WRITE CKSUM tank ONLINE 0 0 0 raidz1-0 ONLINE 0 0 0 gpt/WD15EARS ONLINE 0 0 0 gpt/WD20EARS ONLINE 0 0 0 gpt/ST1500 ONLINE 0 0 0 logs gpt/tank_zil0 ONLINE 0 0 0 gpt/tank_zil1 ONLINE 0 0 0 cache gpt/tank_cache0 ONLINE 0 0 0 gpt/tank_cache1 ONLINE 0 0 0 |
So, time for another bonnie++ benchmark (all interfering service disabled including powerd): Version 1.96 Sequential Output Sequential Input Random Seeks Sequential Create Random Create Size Per Char Block Rewrite Per Char Block Num Files Create Read Delete Create Read Delete K/sec % CPU K/sec % CPU K/sec […]
From a previous post, I noticed the SSD that I’m using in my server showed only a 50 MB/s write speed. That’s weird because the specs show around 145 MB/s. So, I decided to investigate some more. I removed the SSD from the zpool and did some dd tests on it. That last run (which […]
Note that the Samba shares resides in a ZFS pool with dedup turned on. Since the blocks that make up the file being sent are probably already on the pool, it’s not necessarily writing the block data to disk. Using the same method as last time: Whoa. That’s way worse than before. Let’s re-run each: […]
