Solid State Hard Drive
I obtained another Pi 5 at the same time as the 5 amps power supply and active cooler. I had overstressed the original board creating a irrecoverable hardware failure. This occurred on plugging in a new Solid State Drive, where tests indicated power sirregularities.
It is a SanDisk 1TB Extreme Portable SSD, USB-C USB 3.2 Gen 2, External NVMe Solid State Drive up to 1050 MB/s, now with FAT32 and Ext3 partitions.
I quite rightly completed all other proposed tests before returning to those for the SSD, this time with the active cooler in use.
I repeated the last heavy stress test via both the 5 amps and 4 amps power supplies. The results indicate around a 10% increase in USB current, with slightly faster operation at 4 amps but at a higher temperature. A few more runs would be required to determine the truth.
With these particular drives, SSD reading speed was around 2.45 times faster. DriveSpeed and LanSpeed I/O Benchmarks
As indicated earlier, there are two varieties of the original drive benchmark, DriveSpeed using Direct I/O and LANSpeed without that option. The former would not run via 64 bit OS software and extra large files have to be selected to avoid caching data using the latter.
First of the following results is for LanSpeed using Ext3 formatted files where one of the 4096 MB files appears to have been partially cached and not identified in vmstat sampling. Note that USB power consumption was up to 640 mA at 5.14 volts.
The second details are partial results running DriveSpeed on a FAT32 partition, where writing large files was slower than during the Ext3 test but similar on reading. The main observation is the exceptionally slow speed on handling small files, particularly on writing. Partition size was around 500 GB.
New Benchmark Large Files earlier indicates best USB 3 hard drive results like 30 MB/second writing and 310 MB/second reading. Results for that benchmark on the SSD were around 165 and 415 MB/second respectively.
I obtained another Pi 5 at the same time as the 5 amps power supply and active cooler. I had overstressed the original board creating a irrecoverable hardware failure. This occurred on plugging in a new Solid State Drive, where tests indicated power sirregularities.
It is a SanDisk 1TB Extreme Portable SSD, USB-C USB 3.2 Gen 2, External NVMe Solid State Drive up to 1050 MB/s, now with FAT32 and Ext3 partitions.
I quite rightly completed all other proposed tests before returning to those for the SSD, this time with the active cooler in use.
I repeated the last heavy stress test via both the 5 amps and 4 amps power supplies. The results indicate around a 10% increase in USB current, with slightly faster operation at 4 amps but at a higher temperature. A few more runs would be required to determine the truth.
With these particular drives, SSD reading speed was around 2.45 times faster.
Code:
INT MP CPU PMIC OpenGL Drive Volts Amps MB/sec MFLOPS MHz Volts °C °C FPS MB/s5A Supply SSDPower 5.12 2.74 Min 94755 2400 0.8838 36.7 40.2 60.0 146.7USB 4.80 0.59 Avg 96325 2400 0.8838 64.8 64.6 64.7 166.1 Max 109008 2400 0.8838 68.6 68.3 69.04A Supply SSDPower 5.12 2.95 Min 109197 2400 0.8830 38.4 41.7 64.0 148.5USB 4.84 0.59 Avg 111188 2400 0.8830 67.7 67.9 67.2 168.4 Max 119425 2400 0.8830 71.9 71.1 70.0 As indicated earlier, there are two varieties of the original drive benchmark, DriveSpeed using Direct I/O and LANSpeed without that option. The former would not run via 64 bit OS software and extra large files have to be selected to avoid caching data using the latter.
First of the following results is for LanSpeed using Ext3 formatted files where one of the 4096 MB files appears to have been partially cached and not identified in vmstat sampling. Note that USB power consumption was up to 640 mA at 5.14 volts.
The second details are partial results running DriveSpeed on a FAT32 partition, where writing large files was slower than during the Ext3 test but similar on reading. The main observation is the exceptionally slow speed on handling small files, particularly on writing. Partition size was around 500 GB.
New Benchmark Large Files earlier indicates best USB 3 hard drive results like 30 MB/second writing and 310 MB/second reading. Results for that benchmark on the SSD were around 165 and 415 MB/second respectively.
Code:
LanSpeed RasPi 64 Bit gcc 8 Tue Dec 26 12:49:03 2023 Selected File Path: /media/raspberrypi/Ext3/ Total MB 491955, Free MB 491955 MBytes/Second MB Write1 Write2 Write3 Read1 Read2 Read34096 491.86 393.63 360.86 416.77 937.70 420.408192 407.49 364.13 365.28 579.91 412.14 411.16 Random Read Write From MB 4 8 16 4 8 16 msecs 0.002 0.002 0.002 0.52 0.49 0.48 200 Files Write Read Delete File KB 4 8 16 4 8 16 secs MB/sec 139.48 34.81 100.02 479.48 558.20 1353.81 ms/file 0.03 0.24 0.16 0.01 0.01 0.01 0.019 End of test Tue Dec 26 12:52:22 2023procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu----- r b swpd free buff cache si so bi bo in cs us sy id wa st 1 3 0 6805744 182608 752752 0 0 0 413554 3775 2544 0 22 46 31 0 2 2 0 6805744 182608 752752 0 0 0 401661 6715 8275 0 18 32 50 0 1 3 0 6805744 182608 752752 0 0 123 382200 4824 5126 0 20 32 48 0 1 3 0 6805744 182608 752752 0 0 13 332742 4379 4918 0 18 27 55 0 1 3 0 6805744 182608 752752 0 0 66 363967 4509 4615 0 17 47 36 0 2 2 0 6805744 182608 752752 0 0 46 345998 6905 9378 0 17 45 38 0 2 0 0 6805744 182608 752752 0 0 85870 272317 4082 4434 0 4 55 41 0 1 1 0 6805744 182608 752752 0 0 409245 0 3435 648 0 5 73 21 0 1 1 0 6805744 182608 752752 0 0 381261 0 3076 616 0 5 74 20 0 1 1 0 6805744 182608 752752 0 0 406957 3 3332 846 0 5 74 21 0 2 0 0 6805744 182608 752752 0 0 414537 1 3147 597 0 5 74 21 0 DriveSpeed RasPi 64 Bit gcc 8 Tue Dec 26 12:33:43 2023 /media/raspberrypi/FAT32/ MBytes/Second MB Write1 Write2 Write3 Read1 Read2 Read31024 194.07 198.99 218.42 426.35 426.37 425.99 200 Files Write Read Delete File KB 4 8 16 4 8 16 secs ms/file 104.09 104.07 104.07 0.14 0.21 0.12 0.052 Statistics: Posted by RoyLongbottom — Wed Jan 17, 2024 5:41 pm