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Crypto: Reduce YK precalc pool size, almost unused

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zzz
2025-07-27 09:11:35 -04:00
parent 8e4890d3ac
commit 4128335115
1 changed files with 6 additions and 6 deletions
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core/java/src/net/i2p/crypto/YKGenerator.java
+6 -6
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@@ -21,8 +21,8 @@ import net.i2p.util.SystemVersion;
* Precalculate the Y and K for ElGamal encryption operations.
*
* This class precalcs a set of values on its own thread, using those transparently
* when a new instance is created. By default, the minimum threshold for creating
* new values for the pool is 20, and the max pool size is 50. Whenever the pool has
* when a new instance is created.
* Whenever the pool has
* less than the minimum, it fills it up again to the max. There is a delay after
* each precalculation so that the CPU isn't hosed during startup.
* These three parameters are controlled by java environmental variables and
@@ -48,8 +48,8 @@ final class YKGenerator {
public final static String PROP_YK_PRECALC_MIN = "crypto.yk.precalc.min";
public final static String PROP_YK_PRECALC_MAX = "crypto.yk.precalc.max";
public final static String PROP_YK_PRECALC_DELAY = "crypto.yk.precalc.delay";
public final static int DEFAULT_YK_PRECALC_MIN = 20;
public final static int DEFAULT_YK_PRECALC_MAX = 50;
public final static int DEFAULT_YK_PRECALC_MIN = 3;
public final static int DEFAULT_YK_PRECALC_MAX = 8;
public final static int DEFAULT_YK_PRECALC_DELAY = 200;
/**
@@ -59,9 +59,9 @@ final class YKGenerator {
public YKGenerator(I2PAppContext context) {
ctx = context;
// add to the defaults for every 128MB of RAM, up to 1GB
// add to the defaults for every 128MB of RAM, up to 384MB
long maxMemory = SystemVersion.getMaxMemory();
int factor = (int) Math.max(1l, Math.min(8l, 1 + (maxMemory / (128*1024*1024l))));
int factor = (int) Math.max(1l, Math.min(3l, 1 + (maxMemory / (128*1024*1024l))));
int defaultMin = DEFAULT_YK_PRECALC_MIN * factor;
int defaultMax = DEFAULT_YK_PRECALC_MAX * factor;
MIN_NUM_BUILDERS = ctx.getProperty(PROP_YK_PRECALC_MIN, defaultMin);