FCS

Hello, You right, the 7z.exe process takes small amount of RAM, I have checked it. The potential problem is Windows caching I/O disk operations. Did you test 7z behaviour in situation I described in the previous post ? Is it possible on current version the "out of memory" problem ? Regards ML

Hello, Thanks for your suggestions Sam. I found those pages too. Igor, I know that windows is buffering files under read and write, calculating the assigned buffer for this, usually it grows up to 50% of physical memory, but if physical memory is used in 70% it takes all the rest of memory 30% (finally 100% of it), not 50% of the free 30% , and it leads to system problems. Reading posts on this forum I found the mmemuse parameter with context of allocating memory for 7zip, but in test it didn't give...

Hello, I use this command: "C:\Program Files\7-zip\7z.exe" a -tzip -mx=0 -r -bb1 H:\kopia\full E:!_Siec* 1>log.txt 2>err.txt The problem I described in first post is on Win 2022 server, where I'm testing 7z for creating full and differential backup of users data (240 GB). This line creates full backup. This problem occurs on my local computer too, where I test creating of backup of 2GB files. It is visible in the Windows Task manager. In both places (with different windows systems) the used memory...

Hello, Is there a way to set the amount of memory which will 7z use ? I try to set -mmemuse parameter, but it does not work. It is important for me, because at this moment compression by 7zip takes about 120GB of memory and it is about 50% of all RAM for creating 230GB zip file. In near future the free memory will be reduced to 70GB and this way the compression will probably takes all of them. So I need set the max memory limit for 7z zip process. Regards ML

Hello, Is there a way to set the amount of memory which will 7z use ? I try to set -mmemuse=1G parameter, but it does not work. It is important for me, because at this moment compression by 7zip takes about 120GB of memory and it is about 50% of all RAM for creating 230GB zip file. In near future the free memory will be reduced to 70GB and this way the compression will probably takes all of them. So I need set the max memory limit for 7z zip process. Regards ML

Hello, On the version 2201 the time of compression during the last iteration is the same as on 2408 Kompresja: 2024-08-28 23:20:03,05 Kopiowanie: 2024-08-28 23:52:16,10 and takes 32 min. I will observe the next iterations, because at this moment I have no idea why the time grows from 22 into 32 min. Probably any external cpu usage may occur or the content of database binary file changed even if the size of this file not grows a lot. 2024-08-28 dump: 105 729 490 944 b zip: 41 839 881 944 b 2024-08-27...

Hello, It is new server 16C/32T. 7zip works on hardware server not in VM. The longer time is after installation of the new version. The source database dump binary file of course changes in time, but it is still about 105 GB. I go back to 2201 version to see again how long time it takes. As you see the process starts at night, so will send tomorrow results of last iteration. The time may depend of the structure of compressed file. I tested locally on different computer the compression of 1.7GB MP4...

Hello, I know the compression time because the command is a part of batch file. echo Kompresja: %Date% %Time% >> C:!Bat\dump.log "C:\Program Files\7-zip\7z.exe" a -tzip -mx=3 f:\arch\xxx%date% f:\arch\xxx.dmp echo Kopiowanie : %Date% %Time% >> C:!_Bat\dump.log after C: is '\' (not visible here) so I exactly know how many time it takes on version 2201 Kompresja: 2024-08-22 23:19:11,85 Kopiowanie: 2024-08-22 23:41:51,83 on version 2408 Kompresja: 2024-08-27 23:16:40,07 Kopiowanie : 2024-08-27 23:48:08,92...