- Disk Sensei 1 6 1 – Advanced Disk Performance Tool
- Disk Sensei 1 6 1 – Advanced Disk Performance Tool Reviews
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- Disk Sensei 1 6 1 – Advanced Disk Performance Tools
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- The 64DD is a magnetic disk drive peripheral for the Nintendo 64 game console developed by Nintendo.It was announced in 1995, prior to the Nintendo 64's 1996 launch, and after numerous delays was released only in Japan on December 1, 1999.
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hdparm is a command line utility to set and view hardware parameters of hard disk drives. It can also be used as a simple benchmarking tool.
Warning: Changing drive's default parameters can freeze the system or even irreversibly damage the drive.
Installation
Install the hdparm package. For use with SCSI devices, install the sdparm package.
Usage
Disk info
To get information about hard disks, run the following:
Benchmarking
Aiseesoft mac video downloader 3 5 2 free download. hdparm can be used for Benchmarking#hdparm.
Power management configuration
Modern hard drives support numerous power management features, the most common ones are summarized in the following table. See hdparm(8) for the complete list.
Warning: Overly aggressive power management can reduce the lifespan of hard drives due to frequent parking and spindowns.
Parameter | Description |
---|---|
-B | Set the Advanced Power Management feature. Possible values are between 1 and 255, low values mean more aggressive power management and higher values mean better performance. Values from 1 to 127 permit spin-down, whereas values from 128 to 254 do not. A value of 255 completely disables the feature. |
-S | Set the standby (spindown) timeout for the drive. The timeout specifies how long to wait in idle (with no disk activity) before turning off the motor to save power. The value of 0 disables spindown, the values from 1 to 240 specify multiples of 5 seconds and values from 241 to 251 specify multiples of 30 minutes. |
-M | Set the Automatic Acoustic Management feature. Most modern hard disk drives have the ability to speed down the head movements to reduce their noise output. The possible value depends on the disk, some disks may not support this feature. |
Note: When passing both
-B
and -S
parameters, APM values less than 128 might cause the drive to spin down before the -S
timeout value. See [1].Hurry hurry heal me mac os. To query current value, pass the parameter without a value. For example:
![Advanced Advanced](https://img.magimg.com/uploads/disk-sensei.png)
To apply different value, for example set APM to 127: Online casino 2017.
Tips and tricks
Querying the status of the disk without waking it up
Invoking hdparm with the query option is known to wake-up some drives. In this case, consider
smartctl
provided by smartmontools to query the device which will not wake up a sleeping disk. For example:Persistent configuration using udev rule
To make the setting persistent across reboot, one can use a udev rule:
Because a disk device can be assigned randomly to a changing
/dev/sdX
, the disk can also be identified by its serial as explained in Udev#Identifying a disk by its serial.Systems with multiple hard drives can apply the rule in a flexible way according to some criteria. For example, to apply power-saving settings to all rotational drives (hard disk with rotational head, excluding in particular solid state drives), use the following rule:
Reapplying configuration after wakeup
If the configuration is lost after system suspension/hibernation, it can be reapplied using systemd-sleep.
Put a script into
/usr/lib/systemd/system-sleep
and make it executable:Putting a drive to sleep directly after boot
A device which is rarely needed can be put to sleep directly at the end of the boot process. This does not work with the above udev rule because it happens too early. In order to issue the command when the boot is completed, just create a systemd service and enable it:
Working with unsupported hardware
Disk Sensei 1 6 1 – Advanced Disk Performance Tool
Some drives do not support spin down via hdparm. A diagnostic error message similar to the following is a good indication this is the case:
For some other drives, the hdparm command is acknowledged but the drive do not respect the parameters (either APM or spin down timer). This was observed with a Toshiba P300 (model HDWD120) HDD.
Such drives can be spun down using hd-idle which ships with a systemd service. One need to edit
/etc/conf.d/hd-idle
and the HD_IDLE_OPTS
value, then start and enablehd-idle.service
.Example using a 10 min idle time for
/dev/sda
and a 1 min idle time for /dev/disk/by-uuid/01CF0AC9AA5EAF70
:the leading
-i 0
https://ostwin-torrentnightmarejestersygdckmac.peatix.com. parameter indicates that hd-idle is disabled on other drives.Power management for Western Digital Green drives
Western Digital Green hard drives have a special idle3 timer which controls how long the drive waits before positioning its heads in their park position and entering a low power consumption state. The factory default is aggressively set to 8 seconds, which can result in thousands of head load/unload cycles in a short period of time and eventually premature failure, not to mention the performance impact of the drive often having to wake-up before doing routine I/O. Western Digital issued a statement[dead link 2020-12-26 ⓘ], claiming that Linux is not optimized for low power storage devices and advising to reduce logging frequency. There are different ways to amend the idle3 state:
- Western Digital supplies a DOS utility wdidle3.exe for download for tweaking this setting. This utility is designed to upgrade only the firmware of the following hard drives: WD1000FYPS, WD7500AYPS, WD7501AYPS but is known to be able to change the idle3 timer of other Green models as well.
- hdparm features a reverse-engineered implementation behind the
-J
flag, which is not as complete as the original official program, even though it seems to work on at least a few drives. A setting of 30 seconds is recommended for Linux use. Specify a value of zero (0) to disable the WD idle3 timer completely (NOT RECOMMENDED!): See #Persistent configuration using udev rule to automatically use this parameter on supported hard drives. - Another unofficial utility is provided by the idle3-tools package. A raw
idle3
value is passed as a parameter of the idle3ctl command. The correspondence between this value and the timeout in seconds is provided in the bottom table within idle3ctl(8). The following command sets the timer to 5 min: this one completely disables the timer:
Disk Sensei 1 6 1 – Advanced Disk Performance Tool Reviews
Note:- A full power cycle is required for any change to take effect regardless of which program above is used. It means the drive needs to be powered OFF and then ON, a simple reboot does not suffice.
- Some Western Digital Green drives are also known to have a different interpretation of hparm's standby timeout parameter,
-S 1
resulting in a 10 min timer rather than 5 sec. - The power consumption of a Green drive is typically around 5.3W during read/write, 4.7W in idle mode and 0.7W in standby mode.
Troubleshooting
APM level reset after suspend
The APM level may get reset after a suspend requiring it to be re-executed after each resume. This can be automated with the following systemd unit (adapted from a forum thread):
Note: The
sleep.target
is pulled by all suspend
, hybrid-sleep
and hibernate
targets, but it finishes starting up before the system is suspended, so the three targets have to be specified explicitly. See [2].Alternatively, create a hook in /usr/lib/systemd/system-sleep.
See also
Disk Sensei 1 6 1 – Advanced Disk Performance Tool Harbor Freight
- https://sourceforge.net/projects/hdparm/ - hdparm on SourceForge
Retrieved from 'https://wiki.archlinux.org/index.php?title=Hdparm&oldid=647292'
Disk Sensei 1 6 1 – Advanced Disk Performance Tools
This is not a review per se, it is a discussion of the class of software to which this program belongs. As a public service to the MacUpdate community, I've found as many of these 'cleaner' apps on this website as I could and listed them them below. Before you even *think* of installing any of them, PLEASE read this: https://discussions.apple.com/docs/DOC-8841. There are now 74 (that's SEVENTY FOUR) programs in the list, and it seems like new entries in the 'Mac cleaner' market space pop up every day, metastasizing like a cancer. Unfortunately, more is not better. They are all of dubious value. Many have no reviews here. Many have what look to be essentially fake 5-star reviews with no useful commentary. Many -- probably the most accurate and honest -- have negative reviews, by users who have been burned by them. Most of the developers' descriptions boast about what a great job they do, but the truth is, there are no good, comprehensive, head-to-head reviews of these programs by impartial 3rd parties. True experts in macOS maintenance advise against using any of them, because in general they serve little useful purpose and they can easily do more harm than good. Macs simply do not need 'cleaning.' (See for example: https://www.thesafemac.com/the-myth-of-the-dirty-mac/) Some of these programs are notorious for being little more than malware. Many have 'disk' in their name, although disks, especially internal ones, are now a thing of the past. (Although macOS still comes with the storage drive initialized as 'Macintosh HD,' a quaint relic of a bygone era.) You are well-advised to read any program documentation and make a RELIABLE BACKUP before attempting any changes. If I have missed any programs that should be on the list, please leave a comment and let me know. I will rate all these programs with one star, probably one more than they deserve. And I would appreciate comments. If you disagree, please speak up. But if all you can come up with is 5 stars and a sentence or two saying that program X is great and I don't know what I'm talking about, please save your breath. No one here will take you seriously. And I apologize for the almost unreadable formatting, a severe limitation of MacUpdate itself, which compresses maximum text into minimum space, leaving no whitespace for readability. :: BEGIN LIST:: Aooro : AppCleaner & Uninstaller : AutoTrash : Avast Cleanup : AweCleaner : Broom : BuhoCleaner : CCleaner : Clean Disk : CleanGeeker : CleanGenius : Clean Me : CleanMyDrive : CleanMyMac X : Cleaner One Pro : Cocktail : Combo Cleaner : Disk Aid : Disk Analyzer Pro : Disk BoostUp : Disk Clean Pro : Disk Cleaner : Disk Cleaner Pro : Disk Diet : Disk Doctor : Disk Expert : Disk Health : Disk Janitor : DiskKeeper Advanced Cleaner : DiskKeeper Cleaner - Modern : DiskKeeper Pro : Disk Manager: Disk Sensei : Disk Xray : Disk Xray Lite : Doctor Disk Cleaner : FastScanner Pro : Hard Disk Manager : HD Cleaner : iBooster : iCare : iMac Cleaner : MacBooster : Mac Cleaner : MacClean : MacClean360 : MacCleaner Pro : MacCleanse : MacEnizer : MacMaintenance : MacMaster : MacOptimizer : MacTuneUp : Mechanism8 : Mojave Cleaner : More Disk Space : Omni Remover : Power Booster : PowerMyMac : Precious Disk : Pro Disk Cleaner : Quick Cleaner : SubRosaSoft Drive Cleaner : Sensei : Startup Manager : Stellar SpeedUpMac : TrashMe 3 : Washing Machine : WeCleanse : WinZip Mac Optimizer : Wise Mac Care : Wise mCleaner : XustoDisk : Xustomite :: END LIST :: The only system maintenance tools I recommend are 1) TinkerTool System, a true bargain priced at only $14 for a single license. TTS is a an exceptional piece of quality engineering, safe when used properly, and superbly documented, with in-depth tutorials for every option. 2) OnyX, from Titanium Software, has a loyal following and gets good reviews here. 3) I have used Northern Softworks' 'Cache Cleaners' in the past (the latest being 'Big Sur Cache Cleaner,' which I have not used) and their products were always first rate. Still, the same warnings apply. As for the rest, listed above, it is safe to say that nobody who really knows what they're doing with Macs and macOS will touch them. Don't get sucked in by a pretty interface. You may very well regret it. -SB