Looking at Windscribe VPN and wondering how much crypto capability impacts VPN conneciton. One thing I noticed while doing this is that Windscribe seems to load-balance heavily in the Texas area. My IP address would change pretty much with each connection. First, here’s Windscribe connecting through the IP 75.126.39.93 (SoftLayer). This is a really fast […]
I got an Inateck USB 3.0 2.5″ SATA III disk enclosure. I placed my OCZ SSD in there, and got the following Crystal Disk Mark results: ———————————————————————– CrystalDiskMark 5.0.2 x64 (C) 2007-2015 hiyohiyo Crystal Dew World : http://crystalmark.info/ ———————————————————————– * MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s] * KB = 1000 bytes, KiB = […]
I recently bought this laptop. It came with 4GB of DDR3L-1600 CAS-11 memory. I also recently purchased a pair of 8GB OF DDR3L-1600 CAS-9 memory, figuring that this pair would allow for dual-channel acces and also that the CAS-9 would improve performance (not to mention that the extra memory in general would also help). I […]
I got my hands on an m550 128GB drive (for around $75 with the recent pre-Thanksgiving/pre-Christmas discounts). Here are some comparisons between my old ZIL (the m500 128GB) and the new one: ZIL Throughput (sustained) MB/s none 195.6 m500 128GB 124.0 m550 128GB 265.9 Here are some snippets of zpool isotat output: No ZIL
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2014-11-25 22:07:33,635 - 16777216000 bytes written in 85.77223777770996 seconds 195.60193874713124 MB/s |
[…]
Fresh out of the box:
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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 : 501.551 MB/s Sequential Write : 372.055 MB/s Random Read 512KB : 460.606 MB/s Random Write 512KB : 371.946 MB/s Random Read 4KB (QD=1) : 31.815 MB/s [ 7767.2 IOPS] Random Write 4KB (QD=1) : 76.588 MB/s [ 18698.2 IOPS] Random Read 4KB (QD=32) : 370.200 MB/s [ 90380.9 IOPS] Random Write 4KB (QD=32) : 264.007 MB/s [ 64454.8 IOPS] Test : 1000 MB [E: 0.1% (0.1/119.1 GB)] (x5) Date : 2014/11/23 10:47:23 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) |
Curiously, there are no firmware updates for this drive (nor the m500). Guess Crucial got it right the first time. Be the first to like. Like Unlike
Fresh out of the box:
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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 : 193.286 MB/s Sequential Write : 167.184 MB/s Random Read 512KB : 147.248 MB/s Random Write 512KB : 23.250 MB/s Random Read 4KB (QD=1) : 11.436 MB/s [ 2792.1 IOPS] Random Write 4KB (QD=1) : 10.157 MB/s [ 2479.8 IOPS] Random Read 4KB (QD=32) : 9.695 MB/s [ 2366.9 IOPS] Random Write 4KB (QD=32) : 4.646 MB/s [ 1134.2 IOPS] Test : 1000 MB [E: 0.0% (0.0/59.6 GB)] (x5) Date : 2014/09/12 13:15:19 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) |
That’s 167 MB/s sequential write—pretty cool. Since this is on Windows 7, there’s no UASP support, which should improve performance even more. Be the first to like. Like Unlike
I re-did my benchmarks of my ZFS ZIL using a Crucial m500. The main reason I got this drive is that it has power-loss protection. And, it’s speeds are adequate to keep up with my gigabit Ethernet samba server. Here are the results. My first run was decent, but not stellar:
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2014-04-11 23:32:15,079 - 16777216000 bytes written in 192.07929635047913 seconds 87.345259581685 MB/s |
I didn’t do […]
The latest in my obsession with SSD’s. I jumped on a $70 deal at NewEgg. I bought it to use as a SLOG (ZIL) in my ZFS server, because of its write speeds and because of its power loss protection. I immediately updated the MU03 firmware to MU05. This may be with a SATA II […]
Suspicious of my previous tests using iozone, I wrote a small program (that follows) to measure synchronous write speed. I tested this with and without an SLOG device, and then used a really fast Plextor M5 Pro 256GB SSD as the SLOG. I wanted to make sure that something could achieve the fast SLOG speed […]
This is a follow-up on my previous post. I ran iozone both with and without the [ccie]-e[/ccie] flag. This flag includes a sync/flush in the speed calculations. This flush should tell ZFS to commit the in-process data to disk, thus flushing it to the SLOG device (or to the on-disk ZIL). I ran 4 tests: […]
