08-28-2015 02:40 AM
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  1. teejay69's Avatar
    I learned about this just after my Note 4 upgraded to Lollipop 5.1.1. Lollipop was erratic as far as battery life went, and it tended to heat up. After doing the partition cache thing, everything really settled out nicely. I also changed the transitions to .5. I don't have numbers to back out up, but I really think it's made a difference. My day starts at 0530, and ends near 2300, and I'm still carrying a 15-17% charge. I've done the cache clear on the other phones in the house and everybody feels it makes a difference.

    Posted via the Android Central App
    Ntchwaidumela likes this.
    08-27-2015 07:41 PM
  2. Ntchwaidumela's Avatar
    Is it just placebo or does this make thing snappier? I was cautious about doing this because it is a bit scary but after doing it, it seems quicker. Maybe it is just me?
    It's actually not scary at all. It's very easy to do, as you've probably found out. I do it about every month or so.
    toenail_flicker likes this.
    08-27-2015 08:18 PM
  3. Crashdamage's Avatar
    Clearing cache files has its place, but it's very rare that you need to go there.

    The hot new trendy thing lately is clearing the cache partition, supposedly to increase performance. This is not so. It does not increase performance in the vast majority of instances. If anything, it decreases performance, wasting CPU cycles and power needlessly rebuilding caches.

    In reality, perceived performance improvement is very likely a placebo effect. You want it to be faster, you did stuff that you heard makes it faster, so it must be faster. You believe, therefore it is so.

    Many people are clearing the cache partition often, even daily, treating it as regular maintenance.
    See above. This is totally unnecessary and counterproductive.

    Cache files are there for a reason, to speed up system operation. Normally, best performance is achieved by just leaving cache files alone to do their job.

    In all the years and all the Android devices I've had, I can count the times I've needed to mess with cache files on one hand, with fingers left over.

    But there are rare exceptions. If an app is struggling it might help to clear the cache for that app only. Or another exception is after a major system like Lollipop if the device is acting funky. Clearing all caches so they can rebuild with correct files for the new OS can sometimes straighten it out.

    Otherwise, if it ain't broke don't fix it.

    Android since v1.0. Linux since 2001.
    08-27-2015 08:31 PM
  4. muzzy996's Avatar
    Agree with Crashdamage . I only clear cache when having strange issues, particularly after having done play store updates. Occasionally I've seen strange behavior after applying updates and if a simple reboot doesn't clear them up I'll clear cache. I'd say that I probably clear cache once a month, if that. Otherwise I let cache do it's thing which is supposed to be speeding up app performance as opposed to having to rebuild itself because I keep prematurely clearing it.
    08-27-2015 10:35 PM
  5. sparksd's Avatar
    Clearing the cache partition does not clear application caches.
    muzzy996 and toenail_flicker like this.
    08-27-2015 10:46 PM
  6. muzzy996's Avatar
    You're right . . and I often take for granted everyone can do what rooted users like I do . . for me when i clear cache i'm clearing both cache and dalvic using custom recovery.
    08-27-2015 10:48 PM
  7. Rukbat's Avatar
    After an update, if there are strange issues, or if the phone is suddenly slow, wiping the system cache partition may help. If you flash a different ROM you should always wipe the cache partition (before or after doesn't make any difference).

    Otherwise, if you close apps when you're done with them, instead of going Home, and you don't use "RAM cleaning" apps, you should never have to clear either the app cache or the system cache. (The app cache should seldom get to 100MB. The system cache partition isn't used for anything else, so clearing it won't give you more space for anything.)

    (If you use RAM cleaning apps, uninstall them and you'll see an improvement right away - in phone speed and in battery life.)

    @CD - I can count the times on one finger - I FCd apps all over the place to see what would happen to the cache. It went to almost 2GB and I cleared it. Other than ROM changes (and Play Store bugs - there's something strange in there), I've never found a need to clear a cache.
    Crashdamage likes this.
    08-28-2015 12:00 AM
  8. Crashdamage's Avatar
    Rukbat,
    We agree. One thing I don't get you said...what difference does hitting the Home button make? I just don't see how that matters. I do it a lot and never noticed any problem.

    Android since v1.0. Linux since 2001.
    08-28-2015 02:40 AM
33 12

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