Questions tagged [cache]

An intermediate data storage area with high performance but limited capacity. The term "cache" can refer to hardware cache (on a processor) or software cache (which stores commonly used values in a computer's memory).

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Windows installation and SSD caching

I currently have 3 separate hard drives in my PC, a 250GB Samsung EVO, a 1TB WD Blue SSD, and a 4TB hard drive. My OS is installed on the 250GB drive, I use the 1TB SSD for program installs, and the ...
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How can I make a local cache from a private website/forum?

I wasn't sure if this question was better suited to stackoverflow or superuser, but since there might be a tool out there the allows me to do such a task, I don't need to ask for code. My goal is to ...
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Using GPO to disable cached mode in Outlook 2010 - What happens to existing settings? [migrated]

We have a large NHS exchange estate and historically Cached mode is on for users of NHS mail. Users have on-prem outlook 2010 (for the short time it is still supported), and on-prem exchange accounts ...
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Cache network commands

I have the following situation: I need to install software in a singularity container which fails at several points. Every time it fails, I need to restart the building process. Then, it will re-...
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Prevent filesystem caching on tmpfs

Suppose that I want to put a big file (or a bunch of files) into a TMPFS, for whatever reason. Using dd with various combinations of direct and nocache flags, whether I copy a file from disk or create ...
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133 views

IrfanView replaced my Settings' and Your Phone's icon

I have nearly brand new Windows 10 1903. A day after installing it from scratch, I have installed Irfan View as well. Another day later I have realised that it has (?) replaced my Settings' icon: ...
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Unable to Limit ZFS ARC Size (At Runtime, Without Rebooting)

I am trying to temporarily limit the memory usage of ZFS at runtime, specifically by limiting the maximum ARC size. Before attempting to do this, we first check the current settings and sizes: # cat ...
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Website is faster on second load (with cache disabled on both first and second load)

First load without cache: 1.9 seconds Second load without cache: 1.3 seconds If I wait 1 minute then it takes 1.9 seconds again to load Is there some hidden 1 minute cache in browsers or Windows ...
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959 views

Is VMware aware of Linux memory disk caching?

In my VMware environment a VM is marked as "Stressed" by memory because it constantly demands about 75% of total RAM. It is a Debian 9 VM, so I connected with SSH several times to investigate this ...
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Receiving “Failed to start A high performance web server and a reverse proxy server.” after redis installation

I received the following error: Processing triggers for ureadahead (0.100.0-21) ... N: Ignoring file 'plesk.list.ai_back' in directory '/etc/apt/sources.list.d/' as it has an invalid filename I ...
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3k views

Getting the cache hit ratio (read / writes)

Is there any way to find out what the read/write cache hit ratio is in a Red Hat Linux Server (64 bit)? I tried to use sar (9.x), but can't find it. The reason is, because I'm migrating to another ...
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Cache won't clear

I work as a web designer and I'm having an issue with Caching on my computer that happens when I visit a newly created domain before setting up any content, which I assume is when it caches. Then once ...
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Chrome cache loading error

I am having an issue where Chrome occasionally doesn't load a page fully (e.g. toolbar icons for Google Docs don't appear, stackexchange page doesn't load styling, etc). Here is a screenshot (email ...
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4k views

How to open Edge's temp folder?

Does anyone know how to open Microsoft Edge temp folder or where it’s located? I can’t seem to find or open it.
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Killed fstrim my bcache btrfs raid?

Imagine the following setup: 6x 2TB SATA drives, one 1TB NVME SSD, Ubuntu 18.04, Kernel 5.3.0-40 I configured the SSD as a bcache caching device and the HDDs as bcache backing device, formatted them ...
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How to clear cached memory in Debian?

If I run a free -m, I get this output: Is there a command that I could use to clear the used memory? I have tried this: echo 1 > /proc/sys/vm/drop_caches It will ask for sudo. But even after ...
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“Acceleration” not available in Intel SRT menu

I have an Asus Z68 Motherboard on an existing system running Windows 7 x64. I now want to install an OCZ Agility 3 SSD to make use of the Intel Smart Response Technology. Apparently, it's not an easy ...
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Icon is default “blank page” in properties and when the program is pinned to the taskbar

The unity icon for version 2018.4.16f1 (64-bit) is missing in properties and on the taskbar and instead I see the default blank page icon on both. So far: I tested with resource hacker, removing ...
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Mounting available drive through autofs

We manage a lot of workstations on CentOS 7.4 with different hardware configurations. They all share an automount map managed by FreeIPA. On those workstations, we mount a cache disk on /path/to/...
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How do I stop Chrome sending Cache-control: max-age=0 when I hit enter?

I'm on a slightly flaky connection and I'm trying to improve my browsing experience with the use of a local proxy. According to my research, however, if I hit 'enter' in my browser on an existing URL,...
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How many files should the borg-backup cache contain and how can I clean it?

I use borg-backup for making backups. Because of filling my root partition, I encountered its cache files, that take up several GB: # ls -al /root/.cache/borg/ total 4 drwx------ 1 root root 792 23 ...
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4k views

Remove cached credentials for MS Onedrive using a script

I have a need to be able to remove onedrive cached credentials from local machines from the windows credential manager using a script The reason - When a user is prompted to change their O365 password ...
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Can I configure VLC to cache entire playlists?

I stream albums from my server, using the VLC's playlist functionality. VLC seemingly doesn't cache the upcoming tracks at all and loading the next one seems to often take around 30 seconds (re-...
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Intel RST crashing! IAStorUI unstable in win 8.1

I have a Z87E-ITX Asrock mobo. Using a new 64G Corsair SSD as cache and a new Western Digi Black Scorpion 750G 2.5" drive. Using windows 8.1. Latest software or not, I can't open Intel RST software ...
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how to trim SSD cache drive in zfs 0.8

I have upgraded zfs to kmod-0.8.2-1 for SSD trim and trim function works well for normal zfs SSD drive but does not work for SSD cache drive(sdc in the below log). How can I trim it? Thanks in ...
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Drive can't be ejected the first time, despite “Quick removal” being enabled

This related answer isn't relevant because it's FAT-specific and I use NTFS. I have a 1.5TB BitLocker-encrypted external hard drive formatted in NTFS on which I make large backups using BorgBackup on ...
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757 views

How do I set up this ZFS pool correctly?

Summary: I have set up a RAIDZ array of 4 HDDs with two SSD cache devices, and I don't get the expected results in cache boost and general performance.Also, some things don't seem to add up. ...
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2k views

SSD cache to minimize HDD spin-up time?

short version first: I'm looking for Linux compatible software which is able to transparently cache HDD writes using an SSD. However, I only want to spin up the HDD once or twice a day (to write the ...
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3k views

Video and file caching with squid lusca?

I have configured squid lusca on Ubuntu 11.04 and also configured the video caching but the problem is the squid cannot configure the video more than 2 min long and the file of size up to 5.xx MB only....
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Why would Linux use swap space when there is so much buffer/cache available?

When would Linux choose to swap out instead of using the free memory or buff/cache space? Here is my data on my computer: $ free total used free shared buff/cache ...
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783 views

Use a SSD on linux to speed up the access to the data files on the HDD without wasting space and wearing it out?

I've bought a brand new 250GB Samsung 850 EVO for my laptop using Ubuntu that I want to use as primary storage device, together with the old, but still pretty functioning, 250GB 7500 RPM HDD that I ...
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Why is my Django server still serving old files after changing filenames and clearing cache?

I have made some changes to my Ubuntu server running Django with Apache. I modified some HTML, JS and CSS files, but nothing has changed. Things I have tried: Clearing browser cache Renaming files ...
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2k views

How can I solve Readyboost error: “Unable to create cache. Access is denied”

When I try to configure ReadyBoost for a new flash SD Disk, I get the following error: "Unable to create cache. Access is denied". How can I solve it in order to enable ReadyBoost for that disk? I've ...
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4k views

How can I view Java's cache?

If I use Control Panel > Java > View temporary files, I can view cached .class files, .gif files, etc. Why can't I see them in /../Application Data/Sun/../cache?
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Hazelcast on Kubernetes

I'm running Hazelcast statefulset on dev branch. This is my statefulset YAML file: apiVersion: apps/v1 kind: StatefulSet metadata: name: hazelcast namespace: dev labels: app: hazelcast spec:...
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Refresh Icon Cache Without Rebooting

Normally, to refresh the icon cache in Windows, we have to reboot. Is there a way to refresh the icon cache in Windows 7/8 without rebooting?
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ExpressCache not working after Windows 8 reinstall on Samsung Series 7 Gamer

I have a Samsung Series 7 Gamer laptop which came with Windows 8. After doing a reinstall of Windows, the ExpressCache software is no longer caching. Running "eccmd -info" shows me that the software ...
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nginx returns status:500 when upstream_cache_status:UPDATING

I use proxy_cache_use_stale with updating attribute. I grep my logs for the $upstream_cache_status UPDATING value and found many matchs but I can't reproduce this situation. Can you please help to ...
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1answer
46 views

Transience of files in filesystem cache

In my simplified understanding of a filesystem cache, files that are to be written to a disk mounted with the async option might not be immediately be written to disk, and can instead get smushed into ...
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301 views

Windows 10 unable to disable ALL caching of files to memory

I'm trying to disable windows file write cache. I have disabled the Sysmain service, disabled Prefetch in registry (EnablePrefetcher = 0) and I have even tried turning off disk write caching in the ...
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92 views

How to drop memory caches in macOS?

In GNU/Linux there's a way to drop_caches. drop_caches is the command that would flush caches from the main memory. I don't have such a command in macOS. How to..?
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72 views

how to run a linux program faster after its first execution

I use a Sophos antivirus program to scan email in antispam software ASSP, server OS Centos 7.4, MTA EXIM. It run in this way /usr/local/bin/savscan -sc -s -archive /file It works very well to block ...
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50 views

Proxy/cache with with download accelerator (parallel range requests)

I'd like to use SuperUser collective wisdom to find an http proxy-cache with integrated download accelerator or in other words: parallel range requests. The use case is: a user requests a large file, ...
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I can ping my site, but get timed out in browser. (Only on my windows desktop)

I have a site and it works for everyone and on all my devices except my windows desktop. (works on the same machine if I boot on linux). I can ping it from the command line with no problem, but I can'...
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3k views

How to enable offline cache (offline browsing) in Chome?

Google appears to have removed the flags option "Enable Show Saved Copy Button" (the #show-saved-copy flag) in Chrome. I don't know when they did it, but I'm not seeing it in version 75. Is there ...
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Is there a way to wipe complete GTK cache?

GTK remembers a lot of stuffs like the last folder I used when you try to "Save As" in any application, the size of the "Open File" window. Is there a way to remove that? I have cleared: rm -f "${...
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574 views

Can you put the BitTorrent cache on a USB flash drive?

I wonder if there's any way to improve BitTorrent performance by putting any cache on a USB stick, like the ReadyBoost in Windows?
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25 views

Is there a way to dynamically move a file from one device to another at the time of an SMB request?

I am trying to figure out a way to move files on the fly from a traditional HDD to an SSD when a user requests a file via SMB So the user would browse the server and when selecting the file it moves ...
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45 views

Disable Linux Page Cache for Reads

Is there a way to turn-off page caching for reads in Linux? More specifically, I would like my processes to read directly from the disk. The setting of my problem: I am trying out new query ...
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1answer
140 views

Resiliency in Tiered Storage Spaces Volume

I am using Windows 10 When creating an SSD tier and HDD tier with New-StorageTier command, I am able to set ResiliencySettingName (If unset, it seems to default to Mirror). Then, when creating a ...

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