small fixes

Makefile

@@ -13,7 +13,7 @@ install:
 	
 	install -d $(DESTDIR)/$(PREFIX)/etc/nohang
 	install -m0644 ./nohang.conf $(DESTDIR)/$(PREFIX)/etc/nohang
-	install -m0644 ./default_values_backup.conf $(DESTDIR)/$(PREFIX)/etc/nohang
+	install -m0644 ./nohang.conf.backup $(DESTDIR)/$(PREFIX)/etc/nohang
 	
 	install -d $(DESTDIR)/$(PREFIX)/usr/share/man/man1
 	gzip -k -c nohang.1 > $(DESTDIR)/$(PREFIX)/usr/share/man/man1/nohang.1.gz

nohang

@@ -1427,8 +1427,8 @@ while True:
     if mem_available <= mem_min_sigkill_kb and swap_free <= swap_min_sigkill_kb:
         time0 = time()
 
-        mem_info = 'Low memory; corrective action required!\n  MemAvailable ({} MiB, {} %) < mem_min_sigkill ({} MiB, {} %)\n  Swa' \
+        mem_info = 'Low memory; corrective action required!\n  MemAvailable [{} MiB, {} %] <= mem_min_sigkill [{} MiB, {} %]\n  Swa' \
-            'pFree ({} MiB, {} %) < swap_min_sigkill ({} MiB, {} %)'.format(
+            'pFree [{} MiB, {} %] <= swap_min_sigkill [{} MiB, {} %]'.format(
                 kib_to_mib(mem_available), 
                 percent(mem_available / mem_total), 
 
@@ -1447,7 +1447,7 @@ while True:
     elif mem_used_zram >= zram_max_sigkill_kb:
         time0 = time()
 
-        mem_info = 'Low memory; corrective action required!\n  MemUsedZram ({} MiB, {} %) > zram_max_sigkill ({} MiB, {} %)'.format(
+        mem_info = 'Low memory; corrective action required!\n  MemUsedZram [{} MiB, {} %] >= zram_max_sigkill [{} MiB, {} %]'.format(
             kib_to_mib(mem_used_zram),
             percent(mem_used_zram / mem_total),
             kib_to_mib(zram_max_sigkill_kb),
@@ -1460,8 +1460,8 @@ while True:
         
         time0 = time()
 
-        mem_info = 'Low memory; corrective action required!\n  MemAvailable ({} MiB, {} %) < mem_min_sigterm ({} MiB, {} %)\n  Sw' \
+        mem_info = 'Low memory; corrective action required!\n  MemAvailable [{} MiB, {} %] <= mem_min_sigterm [{} MiB, {} %]\n  Sw' \
-            'apFree ({} MiB, {} %) < swap_min_sigterm ({} MiB, {} %)'.format(
+            'apFree [{} MiB, {} %] <= swap_min_sigterm [{} MiB, {} %]'.format(
                 kib_to_mib(mem_available),
                 percent(mem_available / mem_total),
                 
@@ -1485,8 +1485,8 @@ while True:
     elif mem_used_zram >= zram_max_sigterm_kb:
         time0 = time()
 
-        mem_info = 'Low memory; corrective action required!\n  MemUsedZram ({} MiB, {} %) > zram_max_sigter' \
+        mem_info = 'Low memory; corrective action required!\n  MemUsedZram [{} MiB, {} %] >= zram_max_sigter' \
-            'm ({} M, {} %)'.format(
+            'm [{} M, {} %]'.format(
                 kib_to_mib(mem_used_zram), 
                 percent(mem_used_zram / mem_total), 
                 kib_to_mib(zram_max_sigterm_kb), 
@@ -1497,7 +1497,7 @@ while True:
     # LOW MEMORY WARNINGS
     elif gui_low_memory_warnings:
 
-        if mem_available < mem_min_warnings_kb and swap_free < swap_min_warnings_kb + 0.1 or mem_used_zram > zram_max_warnings_kb:
+        if mem_available <= mem_min_warnings_kb and swap_free <= swap_min_warnings_kb + 0.1 or mem_used_zram >= zram_max_warnings_kb:
             warn_time_delta = time() - warn_time_now
             warn_time_now = time()
             warn_timer += warn_time_delta

nohang.conf

@@ -26,7 +26,7 @@
 
     1. Thresholds below which a signal should be sent to the victim
 
-    Sets the available memory levels below which SIGTERM or SIGKILL
+    Sets the available memory levels at or below which SIGTERM or SIGKILL
     signals are sent. The signal will be sent if MemAvailable and
     SwapFree (in /proc/meminfo) at the same time will drop below the
     corresponding values. Can be specified in % (percent) and M (MiB).
@@ -77,6 +77,8 @@ rate_mem = 6
 rate_swap = 3
 rate_zram = 1
 
+    See also https://github.com/rfjakob/earlyoom/issues/61
+
 #####################################################################
 
     3. The prevention of killing innocent victims
@@ -250,18 +252,18 @@ mlockall = False
 
     Valid values are integers from the range [-20; 19].
 
-niceness = -15
+niceness = -9
 
     Set oom_score_adj for the nohang process.
     Valid values are integers from the range [-1000; 1000].
     Setting the values to -1000 will prohibit suicide.
 
-oom_score_adj = -100
+oom_score_adj = -50
 
     Read `man ionice` to understand the following parameters.
     Setting the True value requires the root privileges.
 
-realtime_ionice = True
+realtime_ionice = False
 
     'For realtime and best-effort, 0-7 are valid data
     (priority levels), and 0 represents the highest priority level.'

nohang.conf.backup

@@ -68,9 +68,9 @@ zram_max_warnings = 40 %
     7. Preventing the slowing down of the program
 
 mlockall = False
-niceness = -15
+niceness = -9
-oom_score_adj = -100
+oom_score_adj = -50
-realtime_ionice = True
+realtime_ionice = False
 realtime_ionice_classdata = 4
 
 #####################################################################

nohang.service

@@ -1,5 +1,5 @@
 [Unit]
-Description=No hang daemon
+Description=Highly configurable out of memory preventer
 After=sysinit.target
 Documentation=man:nohang(1) https://github.com/hakavlad/nohang