memory-pressure

Memory pressure issue while downloading multiple files using AFNetworking

由 心不动则不痛 提交于 2020-01-03 05:17:30
问题 In my application i am trying to download thousands of images (each image size with a maximum of 3mb) and 10's of videos (each video size with a maximum of 100mb) and saving it in Documents Directory. To achieve this i am using AFNetworking Here my problem is i am getting all the data successfully when i am using a slow wifi (around 4mbps) , but the same downloading if i am doing under a wifi with a speed of 100mbps the application is getting memory warning while downloading images and memory

How to keep executable code in memory even under memory pressure ? in Linux

由 Deadly 提交于 2019-11-30 13:58:35
问题 The goal here is to keep every running process' executable code in memory during memory pressure, in Linux. In Linux, I am able to instantly (1 sec) cause high memory pressure and trigger the OOM-killer by stress --vm-bytes $(awk '/MemAvailable/{printf "%d\n", $2 + 4000;}' < /proc/meminfo)k --vm-keep -m 4 --timeout 10s (code from here) with 24000MB max RAM inside a Qubes OS R4.0 Fedora 28 AppVM. EDIT4: Perhaps relevant, and yet I forgot to mention, is the fact that I've no swap enabled (ie.

How to keep executable code in memory even under memory pressure ? in Linux

由 纵然是瞬间 提交于 2019-11-30 09:30:54
The goal here is to keep every running process' executable code in memory during memory pressure, in Linux. In Linux, I am able to instantly (1 sec) cause high memory pressure and trigger the OOM-killer by stress --vm-bytes $(awk '/MemAvailable/{printf "%d\n", $2 + 4000;}' < /proc/meminfo)k --vm-keep -m 4 --timeout 10s (code from here ) with 24000MB max RAM inside a Qubes OS R4.0 Fedora 28 AppVM. EDIT4: Perhaps relevant, and yet I forgot to mention, is the fact that I've no swap enabled (ie. CONFIG_SWAP is not set) dmesg reports: [ 867.746593] Mem-Info: [ 867.746607] active_anon:1390927
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